실습 4일차_@Resource

 Spring @Resource

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		Cat c = p1.getCat();
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		System.out.printf("고양이 이름:%s 나이:%s 성별:%s", c.getName(), c.getAge(), c.getSex());	
	}
}

Cat.java

package com.dto;
import org.springframework.beans.factory.annotation.Autowired;

public class Cat {
	String name;
	int age;
	String sex;
	
	public Cat() {

	}

	// 기본 생성자 안 만들고 인자있는 생성자 만듬
	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import javax.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;

public class Person {
	
	String username;
	int userage;
	String address;
	
	//@Autowired(required = false)
	//@Qualifier("cat1")
	@Resource(name = "cat2")
	Cat cat; // null
	
	public Person() {
	
	}

	// 기본 생성자 안 만들고 인자있는 생성자 만듬
	public Person(String username, int userage, String address, Cat cat) {
		super();
		this.username = username;
		this.userage = userage;
		this.address = address;
		this.cat = cat;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Cat getCat() {
		return cat;
	}

	public void setCat(Cat cat) {
		this.cat = cat;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", cat=" + cat + "]";
	}
	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">

	<context:annotation-config />

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<!--  <property name="cat" ref="cat" /> 자동으로 주입  Cat.java @Autowired 코드 확인-->
	</bean>
</beans>

<!-- @ 어노테이션 활성화 -->
<context:annotation-config />

* context 활성화 방법

[Namespaces 탭] → [context] Check → Configure Namespaces 알림창 OK 버튼 마우스로 클릭 

* 출력 화면 

 출처

@Resource : 

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실습 3일차_I18N_MessageSource

 I18N이란?

I18N은 Internationalization의 축약형이다.

Internationalization은 알파벳이 20개로, 가장 첫 글자인 I와 가장 마지막 글자인 N 사이에 알파벳이 18개 있다고 하여

I18N으로 칭한다. 즉, 국제화, Internationalization, I18N 모두 같은 말이다.

SW 국제화(I18N)이란?

SW(Software) 국제화는 SW가 특정 지역이나 언어에 종속되지 않고 다양한 지역, 언어에서 정상 동작하도록

국제적으로 통용되는 SW를 설계하고 개발하는 과정을 말한다.

 Spring Injection_Callback

MainClass.java

import java.util.Locale;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.foo.Example;

public class MainClass {
	public static void main(String[] args) {

		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/user.xml");
		String mesg = ctx.getMessage("greet", null, "Hello~~~", Locale.KOREA);
		System.out.println(mesg);
		
		String mesg2 = ctx.getMessage("greet2", new Object[] {"Kim"}, "Hello~~~", Locale.UK);
		System.out.println(mesg2);
		
		String mesg3 = ctx.getMessage("greet3", new Object[] {"Kim", 20}, "Hello~~~", Locale.UK);
		System.out.println(mesg3);
		
		//Example 빈 참조
		Example exam = ctx.getBean("exam", Example.class);
		exam.printMessage();
		
	}
}

Example.java

package com.foo;

import java.util.Locale;
import org.springframework.context.MessageSource;

public class Example {

	MessageSource messageSource;
	
	//setter 메서드 주입
	public void setMessageSource(MessageSource messageSource) {
		this.messageSource = messageSource;
	}
	
	public void printMessage() {
		String mesg = messageSource.getMessage("greet", null, "Hello~~~", Locale.KOREA);
		System.out.println(mesg);
	}
}

hello_en.properties

# hello_en.properties
greet=Good Morning
greet2=name:{0}
greet3=name:{0} age:{1}

hello_ko.properties

# hello_ko.properties
greet=안녕하세요.
greet2=이름:{0}
greet3=이름:{0} 나이:{1}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
	
	<!-- hello_xx.properties 에서 hello만 저장한다. -->

	<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
	<!-- id="messageSource" id 값이 정해져 있음 다르게 쓰면 안됨.. -->
		<property name="basenames">
			<list>
			<value>classpath:com/config/hello</value> <!-- 문자열일 경우 value 사용 -->
			</list>
		</property>
		<property name="defaultEncoding" value="utf-8" /> <!-- default encoding: ISO-8859-1. > utf-8로 변경  --> 
	</bean>

	<bean id="exam" class="com.foo.Example">
		<property name="messageSource" ref="messageSource" />
	</bean>

</beans>

* 출력 화면 

 출처

* I18N : https://miaow-miaow.tistory.com/32

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실습 3일차_Injection_Callback

https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements

 Spring Injection_Callback

ExampleMain.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class ExampleMain {

	public static void main(String[] args) {
	
		// IoC Container
		
		//ApplicationContext ctx =
		GenericXmlApplicationContext ctx =
				new GenericXmlApplicationContext("classpath:com/config/conf.xml");
		
		ctx.close();
	}

}

ExampleBean.java

package examples;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ExampleBean {
	
	private static final Logger logger = LoggerFactory.getLogger(ExampleBean.class);

	String mesg; // null 
	
	public ExampleBean() {
		logger.info("ExampleBean 생성자 호출");
	}

	// setter 메서드 주입 ==> xml에서는 <property name = "mesg"
	public void setMesg(String mesg) {
		logger.info("setMesg 메서드 호출");
		this.mesg = mesg;
	}
	
	public String getMesg() {
		return mesg;
	}
	
	// init-method에서 호출
	public void init() {
		logger.info("init 메서드 호출");
	}
	
	// destroy-method에서 호출
	public void cleanup() {
		logger.info("cleanup 메서드 호출");
	}
	
}

conf.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
	
	<bean id="exampleInitBean" class="examples.ExampleBean" init-method="init" destroy-method="cleanup">
		<property name="mesg" value="helloworld" />
	</bean>
	
</beans>

* 출력 화면 

 Spring Injection_Callback

ExampleMain.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class ExampleMain {
	public static void main(String[] args) {
	
		// IoC Container
		
		//ApplicationContext ctx =
		GenericXmlApplicationContext ctx =
				new GenericXmlApplicationContext("classpath:com/config/conf.xml");
		
		ctx.close();
	}
}

ExampleBean.java

package examples;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;

public class ExampleBean implements InitializingBean, DisposableBean{
	
	private static final Logger logger = LoggerFactory.getLogger(ExampleBean.class);

	String mesg; // null 
	
	public ExampleBean() {
		logger.info("ExampleBean 생성자 호출");
	}

	// setter 메서드 주입 ==> xml에서는 <property name = "mesg"
	public void setMesg(String mesg) {
		logger.info("setMesg 메서드 호출");
		this.mesg = mesg;
	}
	
	public String getMesg() {
		return mesg;
	}
	
	// init-method에서 호출
	public void init() {
		logger.info("init 메서드 호출");
	}
	
	// destroy-method에서 호출
	public void cleanup() {
		logger.info("cleanup 메서드 호출");
	}

	@Override
	public void afterPropertiesSet() throws Exception {
		logger.info("afterPropertiesSet 메서드 호출");
		
	}

	@Override
	public void destroy() throws Exception {
		logger.info("destroy 메서드 호출");
	}
	
}

conf.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
	
	<bean id="exampleInitBean" class="examples.ExampleBean">
		<property name="mesg" value="helloworld" />
	</bean>
	
</beans>

* 출력 화면 

 Spring Injection_Callback

ExampleMain.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class ExampleMain {
	public static void main(String[] args) {
	
		// IoC Container
		
		//ApplicationContext ctx =
		GenericXmlApplicationContext ctx =
				new GenericXmlApplicationContext("classpath:com/config/conf.xml");
		
		ctx.close();
	}
}

ExampleBean.java

package examples;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;

public class ExampleBean {
	
	private static final Logger logger = LoggerFactory.getLogger(ExampleBean.class);

	String mesg; // null 
	
	public ExampleBean() {
		logger.info("ExampleBean 생성자 호출");
	}

	// setter 메서드 주입 ==> xml에서는 <property name = "mesg"
	public void setMesg(String mesg) {
		logger.info("setMesg 메서드 호출");
		this.mesg = mesg;
	}
	
	public String getMesg() {
		return mesg;
	}
	
	@PostConstruct
    public void populateMovieCache() {
        logger.info("@PostConstruct 메서드 호출");
    }

    @PreDestroy
    public void clearMovieCache() {
    	logger.info("@PreDestroy 메서드 호출");
    }
}

conf.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
	
	<!-- @ 어노테이션 활성화 -->
	<context:annotation-config />
	
	<bean id="exampleInitBean" class="examples.ExampleBean">
		<property name="mesg" value="helloworld" />
	</bean>
	
</beans>

* 출력 화면 

 출처

+ 강의 교재

실습 2일차_Injection_Collection(list & set & map &props)

https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements

 Spring Injection_Collection_list

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		List<String> emailList = p1.getEmailList();
		for (String email : emailList) {
			System.out.println("email:\n" + email);
		}
		
		List<Cat> catList = p1.getCatList();
		for ( Cat c : catList) {
			System.out.printf("고양이 이름:%s 나이:%s 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
			
	}

}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {
		
	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import java.util.List;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	List<String> emailList;
	
	// 여러개의 Cat 관리
	List<Cat> catList;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public List<String> getEmailList() {
		return emailList;
	}

	public void setEmailList(List<String> emailList) {
		this.emailList = emailList;
	}

	public List<Cat> getCatList() {
		return catList;
	}

	public void setCatList(List<Cat> catList) {
		this.catList = catList;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailList="
				+ emailList + ", catList=" + catList + "]";
	}
	
}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catList">
			<list>
				<ref bean="cat1" /> <!-- 0번째 -->
				<ref bean="cat2" /> <!-- 1번째 -->
			</list>
		</property>
		
		<property name="emailList">
			<list>
				<value>aaa@daum.net</value>
				<value>aaa@naver.com</value>
			</list>
		</property>
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

 Spring Injection_Collection_list_util

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");


		Person p1 = ctx.getBean("p1", Person.class);
		
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		List<String> emailList = p1.getEmailList();
		for ( String email : emailList) {
			System.out.println("email:\n" + email);
		}
		
		List<Cat> catList = p1.getCatList();
		for ( Cat c : catList) {
			System.out.printf("고양이 이름:%s 나이:%s 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
		
	}
}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml 일부
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {
		
	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import java.util.List;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	List<String> emailList;
	
	// 여러개의 Cat 관리
	List<Cat> catList;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public List<String> getEmailList() {
		return emailList;
	}

	public void setEmailList(List<String> emailList) {
		this.emailList = emailList;
	}

	public List<Cat> getCatList() {
		return catList;
	}

	public void setCatList(List<Cat> catList) {
		this.catList = catList;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailList="
				+ emailList + ", catList=" + catList + "]";
	}

}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<util:list id="globalCatList">
		<ref bean="cat1" /> <!-- 0번째 -->
		<ref bean="cat2" /> <!-- 1번째 -->
		<ref bean="cat1" /> <!-- 중복허용 -->
		<ref bean="cat1" /> <!-- 중복허용 -->
	</util:list>
	
	<util:list id="globalEmailList">
		<value>aaa@daum.net</value>
		<value>aaa@naver.com</value>
	</util:list>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catList" ref="globalCatList" />
		<property name="emailList" ref="globalEmailList" />
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

* spring link : https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements

 Spring Injection_Collection_set

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		List<String> emailList = p1.getEmailSet();
		for ( String email : emailList) {
			System.out.println("email:\n" + email);
		}
		
		List<Cat> catList = p1.getCatSet();
		for ( Cat c : catList) {
			System.out.printf("고양이 이름:%s 나이:%s 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
			
	}
	
}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml 일부
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {
		// TODO Auto-generated constructor stub
	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;

import java.util.List;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	List<String> emailSet;
	
	// 여러개의 Cat 관리
	List<Cat> catSet;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public List<String> getEmailSet() {
		return emailSet;
	}

	public void setEmailSet(List<String> emailSet) {
		this.emailSet = emailSet;
	}

	public List<Cat> getCatSet() {
		return catSet;
	}

	public void setCatSet(List<Cat> catSet) {
		this.catSet = catSet;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailSet="
				+ emailSet + ", catSet=" + catSet + "]";
	}

}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<util:list id="globalCatSet">
		<ref bean="cat1" /> <!-- 0번째 -->
		<ref bean="cat2" /> <!-- 1번째 -->
		<ref bean="cat1" /> <!-- 중복허용 -->
		<ref bean="cat1" /> <!-- 중복허용 -->
	</util:list>
	
	<util:list id="globalEmailSet">
		<value>aaa@daum.net</value>
		<value>aaa@naver.com</value>
	</util:list>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catSet" ref="globalCatSet" />
		<property name="emailSet" ref="globalEmailSet" />
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

 Spring Injection_Collection_set_util

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		List<String> emailList = p1.getEmailSet();
		for ( String email : emailList) {
			System.out.println("email:\n" + email);
		}
		
		List<Cat> catList = p1.getCatSet();
		for ( Cat c : catList) {
			System.out.printf("고양이 이름:%s 나이:%s 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
				
	}

}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {
		
	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;

import java.util.List;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	List<String> emailSet;
	
	// 여러개의 Cat 관리
	List<Cat> catSet;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public List<String> getEmailSet() {
		return emailSet;
	}

	public void setEmailSet(List<String> emailSet) {
		this.emailSet = emailSet;
	}

	public List<Cat> getCatSet() {
		return catSet;
	}

	public void setCatSet(List<Cat> catSet) {
		this.catSet = catSet;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailSet="
				+ emailSet + ", catSet=" + catSet + "]";
	}

}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<util:set id="globalCatSet">
		<ref bean="cat1" /> <!-- 0번째 -->
		<ref bean="cat2" /> <!-- 1번째 -->
		<ref bean="cat1" /> <!-- 중복허용 -->
		<ref bean="cat1" /> <!-- 중복허용 -->
	</util:set>
	
	<util:set id="globalEmailSet">
		<value>aaa@daum.net</value>
		<value>aaa@naver.com</value>
	</util:set>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catSet" ref="globalCatSet" />
		<property name="emailSet" ref="globalEmailSet" />
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

 Spring Injection_Collection_map

MainClass.java

import java.util.List;
import java.util.Map;
import java.util.Set;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
			
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		Map<String, String> emailMap = p1.getEmailMap();
		Set<String> keys = emailMap.keySet();
		for (String key : keys) {
			System.out.printf("이메일:%s", emailMap.get(key));
		}
		
		Map<String, Cat> catMap = p1.getCatMap();
		Set<String> keys2 = catMap.keySet();
		for (String key : keys2) {
			Cat c = catMap.get(key);
			System.out.printf("고양이 이름:%s 나이:%d 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
				
	}

}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml 일부
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {

	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import java.util.List;
import java.util.Map;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	Map<String, String> emailMap;
	
	// 여러개의 Cat 관리
	Map<String, Cat> catMap;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Map<String, String> getEmailMap() {
		return emailMap;
	}

	public void setEmailMap(Map<String, String> emailMap) {
		this.emailMap = emailMap;
	}

	public Map<String, Cat> getCatMap() {
		return catMap;
	}

	public void setCatMap(Map<String, Cat> catMap) {
		this.catMap = catMap;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailMap="
				+ emailMap + ", catMap=" + catMap + "]";
	}

}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catMap">
			<map>
				<entry key="c1" value-ref="cat1" />
				<entry key="c2">
					<ref bean="cat2"/>
				</entry>
			</map>
		</property>
		
		<property name="emailMap">
			<map>
				<entry key="e1" value="aaa@daum.net" />
				<entry key="e2">
					<value>aaa@naver.com</value>
				</entry>
			</map>
		</property>
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

 Spring Injection_Collection_map_util

MainClass.java

import java.util.List;
import java.util.Map;
import java.util.Set;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");


		Person p1 = ctx.getBean("p1", Person.class);
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		Map<String, String> emailMap = p1.getEmailMap();
		Set<String> keys = emailMap.keySet();
		for (String key : keys) {
			System.out.printf("이메일:%s \n", emailMap.get(key));
		}
		
		Map<String, Cat> catMap = p1.getCatMap();
		Set<String> keys2 = catMap.keySet();
		for (String key : keys2) {
			Cat c = catMap.get(key);
			System.out.printf("고양이 이름:%s 나이:%d 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
		
	}

}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml 일부
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {
		// TODO Auto-generated constructor stub
	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import java.util.List;
import java.util.Map;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	Map<String, String> emailMap;
	
	// 여러개의 Cat 관리
	Map<String, Cat> catMap;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Map<String, String> getEmailMap() {
		return emailMap;
	}

	public void setEmailMap(Map<String, String> emailMap) {
		this.emailMap = emailMap;
	}

	public Map<String, Cat> getCatMap() {
		return catMap;
	}

	public void setCatMap(Map<String, Cat> catMap) {
		this.catMap = catMap;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailMap="
				+ emailMap + ", catMap=" + catMap + "]";
	}

}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<util:map id="globalCatMap">
		<entry key="c1" value-ref="cat1" />
		<entry key="c2">
			<ref bean="cat2" />
		</entry>
	</util:map>
	
	<util:map id="globalEmailMap">
		<entry key="e1" value="aaa@daum.net" />
		<entry key="e2">
			<value>aaa2@naver.com</value>
		</entry>
	</util:map>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catMap" ref="globalCatMap" />	
		<property name="emailMap" ref="globalEmailMap" />
			
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

 Spring Injection_Collection_props

MainClass.java

import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		
		
		System.out.printf("이름:%s 나이:%s 주소:%s", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		
		
		Properties emailMap = p1.getEmailMap();
		Set<String> keys  = emailMap.stringPropertyNames();
		for(String key : keys) {
			System.out.printf("이메일:%s \n", emailMap.getProperty(key));
		}		
		
		Map<String, Cat> catMap = p1.getCatMap();
		Set<String> keys2 = catMap.keySet();
		for (String key : keys2) {
			Cat c = catMap.get(key);
			System.out.printf("고양이 이름:%s 나이:%d 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}

	}
}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml 일부
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {
	
	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import java.util.List;
import java.util.Map;
import java.util.Properties;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	//Map<String, String> emailMap;
	Properties emailMap;
	
	// 여러개의 Cat 관리
	Map<String, Cat> catMap;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}


	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Properties getEmailMap() {
		return emailMap;
	}

	public void setEmailMap(Properties emailMap) {
		this.emailMap = emailMap;
	}

	public Map<String, Cat> getCatMap() {
		return catMap;
	}

	public void setCatMap(Map<String, Cat> catMap) {
		this.catMap = catMap;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailMap="
				+ emailMap + ", catMap=" + catMap + "]";
	}
	
}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="홍길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catMap">
			<map>
				<entry key="c1" value-ref="cat1" />
				<entry key="c2">
					<ref bean="cat2"/>
				</entry>
			</map>
		</property>
		
		<property name="emailMap">
		
			<props>
				<prop key="e1">aaa@daum.net</prop>
				<prop key="e2">aaa2@naver.com</prop>
			</props>	
		</property>
	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->
</beans>

* 출력 화면 

 Spring Injection_Collection_props_util

MainClass.java

import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		
		
		System.out.printf("이름:%s 나이:%s 주소:%s \n", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat		
		
		Properties emailMap = p1.getEmailMap();
		Set<String> keys  = emailMap.stringPropertyNames();
		for(String key : keys) {
			System.out.printf("이메일:%s \n", emailMap.getProperty(key));
		}
	
		Map<String, Cat> catMap = p1.getCatMap();
		Set<String> keys2 = catMap.keySet();
		for (String key : keys2) {
			Cat c = catMap.get(key);
			System.out.printf("고양이 이름:%s 나이:%d 성별:%s \n", c.getName(), c.getAge(), c.getSex());
		}
			
	}

}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/* test.xml 일부
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {

	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;
import java.util.List;
import java.util.Map;
import java.util.Properties;

public class Person {
	
	String username;
	int userage;
	String address;
	
	// 이메일
	//Map<String, String> emailMap;
	Properties emailMap;
	
	// 여러개의 Cat 관리
	Map<String, Cat> catMap;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Properties getEmailMap() {
		return emailMap;
	}

	public void setEmailMap(Properties emailMap) {
		this.emailMap = emailMap;
	}

	public Map<String, Cat> getCatMap() {
		return catMap;
	}

	public void setCatMap(Map<String, Cat> catMap) {
		this.catMap = catMap;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", emailMap="
				+ emailMap + ", catMap=" + catMap + "]";
	}

}

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">

	<bean id="cat1" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="cat2" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비2" />
		<property name="age" value="3" />
		<property name="sex" value="숫컷" />
	</bean>
	
	<util:properties id="globalEmailProps">
		<prop key="e1">aaa@daum.net</prop>
		<prop key="e2">aaa2@naver.com</prop>
	</util:properties>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="고길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="catMap">
			<map>
				<entry key="c1" value-ref="cat1" />
				<entry key="c2">
					<ref bean="cat2"/>
				</entry>
			</map>
		</property>
		<property name="emailMap" ref="globalEmailProps" />

	</bean>
	
	<!-- https://docs.spring.io/spring-framework/docs/4.3.0.RELEASE/spring-framework-reference/html/beans.html#beans-collection-elements -->

</beans>

* 출력 화면 

 출처

+ 강의 교재

실습 2일차_Injection_Constructor & Setter 혼합

 Spring Injection_Constructor & Setter 혼합

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {

	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service);
		
		UserService service2 =
				ctx.getBean("service2", UserService.class);
		System.out.println(service2);
		
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {
	// 인스턴스
	String mesg; // null ==> 외부에서 문자열을 주입
	int num; 	 // 0 ==> 외부에서 값을 주입
	
	// 생성자 주입
	public UserService(String m) {
		this.mesg = m;
	}
	
	// setter 메서드 주입
	public void setNum(int num) {
		this.num = num;
	}

	public UserService(int n) {
		this.num = n;
	}
	
	// overriding?
	public UserService(String m, int n) {
		this.mesg = m;
		this.num = n;
	}
	
	// getter
	public String getMesg() {
		return mesg;
	}
	
	public int getNum() {
		return num;
	}

	// toString
	@Override
	public String toString() {
		return "UserService [mesg=" + mesg + ", num=" + num + "]";
	}
	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService">
		<constructor-arg name="m" value="고길동" />
		<property name="num" value="20"/> 
		<!-- 고길동이 생성자에 의해서 mesg 변수에 저장이 됨 -->
	</bean>

	<!-- 
		c namespace
		p namespace
	 -->
	 
	 <bean id="service2" class="com.service.UserService" c:m="고길동" p:num="30" />
	
</beans>

* 출력 화면 

 Spring Injection_shortcut_p 2

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service = ctx.getBean("service", UserService.class);
		List<String> list = service.list();
		System.out.println(list);
		
		UserService service2 = ctx.getBean("service2", UserService.class);
		List<String> list2 = service2.list();
		System.out.println(list2);
		
	}
}

UserService.java

package com.service;
import java.util.List;
import com.dao.UserDAO;

// POJO Class
public class UserService {
	// property (인스턴스 변수)
	UserDAO dao;
	
	// setter 메서드 주입
	public UserService(UserDAO dao) {
		this.dao = dao;
	}
	
	public List<String> list(){
		return dao.list();
	}

}

UserDAO.java

package com.dao;
import java.util.Arrays;
import java.util.List;

public class UserDAO {

	// DB 연동 가정
	public List<String> list(){
		List<String> list = Arrays.asList("고길동", "신길동", "홍길동");
		return list;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="dao" class="com.dao.UserDAO" /> 		<!-- bean 태그로 등록하면 기본 생성자 호출 가능 -->
	<!--  다음 코드와 동일
		UserDAO userDAO = new UserDAO();
	 --> 
	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<constructor-arg name="dao" ref="dao" />
	</bean>
	<!-- 다음 코드와 동일
		UserService service = new UserService();
		service.setDAO(UserDAO);
	 -->
	
	<!-- 
		c namespace
	 -->
	 
	 <bean id="service2" class="com.service.UserService" c:dao-ref="dao" />
	<!--  
		UserService service2= new UserService(dao);
	 --> 
</beans>

* 출력 화면 :

 출처

+ 강의 교재

실습 2일차_Injection_shortcut_c

 Spring Injection_shortcut_c 1

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
		
		UserService service2 =
				ctx.getBean("service2", UserService.class);
		System.out.println(service2.getMesg());
		
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {

	String mesg; // null ==> 외부에서 문자열을 주입
	
	// 생성자 주입
	public UserService(String m) {
		this.mesg = m;
	}
	
	public String getMesg() {
		return mesg;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">


	<bean id="service" class="com.service.UserService">
		<constructor-arg name="m" value="helloWorld" />
	</bean>
	<!-- 
		위의 코드는 다음 코드와 동일하다.
		UserService service = new UserService("helloWorld");
	 -->
	
	<!-- 
		c namespace
	 -->
	 
	 <bean id="service2" class="com.service.UserService" c:m="happyworld" />
</beans>

* 출력 화면 

 Spring Injection_shortcut_p 2

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service = ctx.getBean("service", UserService.class);
		List<String> list = service.list();
		System.out.println(list);
		
		UserService service2 = ctx.getBean("service2", UserService.class);
		List<String> list2 = service2.list();
		System.out.println(list2);
		
	}
}

UserService.java

package com.service;
import java.util.List;
import com.dao.UserDAO;

// POJO Class
public class UserService {
	// property (인스턴스 변수)
	UserDAO dao;
	
	// setter 메서드 주입
	public UserService(UserDAO dao) {
		this.dao = dao;
	}
	
	public List<String> list(){
		return dao.list();
	}

}

UserDAO.java

package com.dao;
import java.util.Arrays;
import java.util.List;

public class UserDAO {

	// DB 연동 가정
	public List<String> list(){
		List<String> list = Arrays.asList("고길동", "신길동", "홍길동");
		return list;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:c="http://www.springframework.org/schema/c"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="dao" class="com.dao.UserDAO" /> 		<!-- bean 태그로 등록하면 기본 생성자 호출 가능 -->
	<!--  다음 코드와 동일
		UserDAO userDAO = new UserDAO();
	 --> 
	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<constructor-arg name="dao" ref="dao" />
	</bean>
	<!-- 다음 코드와 동일
		UserService service = new UserService();
		service.setDAO(UserDAO);
	 -->
	
	<!-- 
		c namespace
	 -->
	 
	 <bean id="service2" class="com.service.UserService" c:dao-ref="dao" />
	<!--  
		UserService service2= new UserService(dao);
	 --> 
</beans>

* 출력 화면 :

 출처

+ 강의 교재

실습 2일차_Injection_shortcut_p

 Spring Injection_shortcut_p 1

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
		
		UserService service2 =
				ctx.getBean("service2", UserService.class);
		System.out.println(service2.getMesg());
		
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {

	String mesg; // null ==> 외부에서 문자열을 주입
	
	// setter 메서드 주입
	public void setMesg(String mesg) {
		System.out.println("setMesg 메서드");
		this.mesg = mesg;
	}
	
	public String getMesg() {
		return mesg;
	}
	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<property name="mesg" value="HelloWorld" />     <!-- System.out.println("setMesg 메서드"); property에 의해 출력 -->
	</bean>
	<!-- 아래 코드와 동일
		UserService service = new UserService();
		service.setMesg("HelloWorld");
	 -->
	
	<bean id="service2" class="com.service.UserService" p:mesg="HappyWorld" />
	<!-- 아래 코드와 동일
		UserService service2 = new UserService();
		service2.setMesg("HelloWorld");
	 -->
</beans>

* 출력 화면 

 Spring Injection_shortcut_p 2

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {

	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service = ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
		System.out.println(service);
		
		UserService service2 = ctx.getBean("service2", UserService.class);
		System.out.println(service2.getMesg());
		System.out.println(service2);
		
		UserService service3 = ctx.getBean("service3", UserService.class);
		System.out.println(service3.getMesg());
		System.out.println(service3);
		
		UserService service4 = ctx.getBean("service4", UserService.class);
		System.out.println(service4.getMesg());
		System.out.println(service4);
		
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {
	// property (인스턴스 변수)
	String mesg; // null ==> 외부에서 문자열을 주입
	int num; 	 // 0 ==> 외부에서 값을 주입
	
	// setter 메서드 주입
	public void setMesg(String mesg) {
		this.mesg = mesg;
	}
	
	public void setNum(int num) {
		this.num = num;
	}
	
	public void setMesgNum(String mesg, int num) {
		this.mesg = mesg;
		this.num = num;
	}
	
	// getter
	public String getMesg() {
		return mesg;
	}
	
	public int getNum() {
		return num;
	}

	// toString
	@Override
	public String toString() {
		return "UserService [mesg=" + mesg + ", num=" + num + "]";
	}
	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<property name="mesg" value="HelloWorld" />     <!-- System.out.println("setMesg 메서드"); property에 의해 출력 -->
	</bean>
	<!-- 
		UserService service = new UserService();
		service.setMesg("HelloWorld");
	 -->
	
	<bean id="service2" class="com.service.UserService">
		<property name="num" value="20" />
	</bean>

	<bean id="service3" class="com.service.UserService">
		<property name="mesg" value="Happy" />
		<property name="num" value="30" />
	</bean>
	<!-- setter based injection -->
	
	<!--  
		p namespace 사용
	 -->
	<bean id="service4" class="com.service.UserService" p:mesg="Lucky" p:num="40"/>

</beans>

* 출력 화면

 Spring Injection_shortcut_p 3

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {

	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service = ctx.getBean("service", UserService.class);
		List<String> list = service.list();
		System.out.println(list);
		
		UserService service2 = ctx.getBean("service2", UserService.class);
		List<String> list2 = service.list();
		System.out.println(list2);
		
	}
}

UserService.java

package com.service;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.dao.UserDAO;

// POJO Class
public class UserService {
	// property (인스턴스 변수)
	UserDAO dao;
	
	// setter 메서드 주입
	public void setDao(UserDAO dao) {
		this.dao = dao;
	}
	
	public List<String> list(){
		return dao.list();
	}
	
}

UserDAO.java

package com.dao;
import java.util.Arrays;
import java.util.List;

public class UserDAO {

	// DB 연동 가정
	public List<String> list(){
		List<String> list = Arrays.asList("고길동", "신길동", "홍길동");
		return list;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="userDAO" class="com.dao.UserDAO" /> 		<!-- bean 태그로 등록하면 기본 생성자 호출 가능 -->
	<!--  아래 코드와 동일
		UserDAO userDAO = new UserDAO();
	 --> 
	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<property name="dao" ref="userDAO"></property>
	</bean>
	<!-- 아래 코드와 동일
		UserService service = new UserService();
		service.setDAO(UserDAO);
	 -->
	
	<!--  
		p namespace 설정
	 -->
	 <bean id="service2" class="com.service.UserService" p:dao-ref="userDAO" />
	<!-- 아래 코드와 동일
		UserService service = new UserService();
		service2.setDAO(UserDAO);
	 -->
</beans>

* 출력 화면 :

 출처

+ 강의 교재

실습 2일차_exam

 Spring exam 1_Constructor

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		Cat c = p1.getCat();
		
		System.out.printf("이름:%s 나이:%s 주소:%s", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		System.out.printf("고양이 이름:%s 나이:%s 성별:%s", c.getName(), c.getAge(), c.getSex());	
	}
}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	// 기본 생성자 안 만들고 인자있는 생성자 만듬
	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;

public class Person {
	
	String username;
	int userage;
	String address;
	
	Cat cat;

	// 기본 생성자 안 만들고 인자있는 생성자 만듬
	public Person(String username, int userage, String address, Cat cat) {
		super();
		this.username = username;
		this.userage = userage;
		this.address = address;
		this.cat = cat;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Cat getCat() {
		return cat;
	}

	public void setCat(Cat cat) {
		this.cat = cat;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", cat=" + cat + "]";
	}
	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="cat" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<constructor-arg name="name" value="나비" />
		<constructor-arg name="age" value="3" />
		<constructor-arg name="sex" value="암컷" />
	</bean>
	
	<bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="고길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>

</beans>

* 출력 화면 

 Spring exam 2_setter

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
import com.dto.Person;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");

		Person p1 = ctx.getBean("p1", Person.class);
		Cat c = p1.getCat();
		
		System.out.printf("이름:%s 나이:%s 주소:%s", p1.getUsername(), p1.getUserage(), p1.getAddress()); // printformat
		System.out.printf("고양이 이름:%s 나이:%s 성별:%s", c.getName(), c.getAge(), c.getSex());
		
	}
}

Cat.java

package com.dto;

public class Cat {
	String name;
	int age;
	String sex;
	
	/*
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Cat() {

	}

	public Cat(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Cat [name=" + name + ", age=" + age + ", sex=" + sex + "]";
	}
	
}

Person.java

package com.dto;

public class Person {
	
	String username;
	int userage;
	String address;
	
	Cat cat;

	/*
	 * <bean id="p1" class="com.dto.Person">
		<constructor-arg name="username" value="홍길동" />
		<constructor-arg name="userage" value="30" />
		<constructor-arg name="address" value="서울" />
		<constructor-arg name="cat" ref="cat" />
	</bean>
	 * constructor가 아닌 property는 기본 생성자가 있어야함
	 */
	
	public Person() {
		// TODO Auto-generated constructor stub
	}

	public Person(String username, int userage, String address, Cat cat) {
		super();
		this.username = username;
		this.userage = userage;
		this.address = address;
		this.cat = cat;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public int getUserage() {
		return userage;
	}

	public void setUserage(int userage) {
		this.userage = userage;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public Cat getCat() {
		return cat;
	}

	public void setCat(Cat cat) {
		this.cat = cat;
	}

	@Override
	public String toString() {
		return "Person [username=" + username + ", userage=" + userage + ", address=" + address + ", cat=" + cat + "]";
	}
	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="cat" class="com.dto.Cat"> <!-- 생성자로 주입  -->
		<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	
	<bean id="p1" class="com.dto.Person">
		<property name="username" value="홍길동" />
		<property name="userage" value="30" />
		<property name="address" value="서울" />
		<property name="cat" ref="cat" />
	</bean>

</beans>

* 출력 화면

 출처

+ 강의 교재

실습 2일차_Setter Injection

의존성 주입의 방법으로는 크게 3가지가 있다.

• 생성자 주입(Constructor Injection)
• 필드 주입(Field Injection)
• 세터 주입(Setter Injection)

 Spring Setter Injection 1

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {

	String mesg; // null ==> 외부에서 문자열을 주입
	
	// setter 메서드 주입
	public void setMesg(String mesg) {
		System.out.println("setMesg 메서드");
		this.mesg = mesg;
	}
	
	public String getMesg() {
		return mesg;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<property name="mesg" value="HelloWorld" />     <!-- System.out.println("setMesg 메서드"); property에 의해 출력 -->
	</bean>
	<!-- 다음 코드와 동일
		UserService service = new UserService();
		service.setMesg("HelloWorld");
	 -->
</beans>

* 출력 화면 

Spring Setter Injection 2

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {

	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
		System.out.println(service);
		
		UserService service2 =
				ctx.getBean("service2", UserService.class);
		System.out.println(service2.getMesg());
		System.out.println(service2);
		
		UserService service3 =
				ctx.getBean("service3", UserService.class);
		System.out.println(service3.getMesg());
		System.out.println(service3);
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {
	// property (인스턴스 변수)
	String mesg; // null ==> 외부에서 문자열을 주입
	int num; 	 // 0 ==> 외부에서 값을 주입
	
	// setter 메서드 주입
	public void setMesg(String mesg) {
		this.mesg = mesg;
	}
	
	public void setNum(int num) {
		this.num = num;
	}
	
	public void setMesgNum(String mesg, int num) {
		this.mesg = mesg;
		this.num = num;
	}
	
	// getter
	public String getMesg() {
		return mesg;
	}
	
	public int getNum() {
		return num;
	}

	// toString
	@Override
	public String toString() {
		return "UserService [mesg=" + mesg + ", num=" + num + "]";
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<property name="mesg" value="HelloWorld" />     <!-- System.out.println("setMesg 메서드"); property에 의해 출력 -->
	</bean>
	<!-- 다음 코드와 동일
		UserService service = new UserService();
		service.setMesg("HelloWorld");
	 -->
	
	<bean id="service2" class="com.service.UserService">
		<property name="num" value="20" />
	</bean>

	<bean id="service3" class="com.service.UserService">
		<property name="mesg" value="Happy" />
		<property name="num" value="35" />
	</bean>
	<!-- setter based injection -->
</beans>

* 출력 화면

Spring Setter Injection 3_Service_dao 추가

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service = ctx.getBean("service", UserService.class);
		List<String> list = service.list();
		System.out.println(list);
	}
}

UserService.java

package com.service;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.dao.UserDAO;

// POJO Class
public class UserService {
	// property (인스턴스 변수)
	UserDAO dao;
	
	// setter 메서드 주입
	public void setDao(UserDAO dao) {
		this.dao = dao;
	}
	
	public List<String> list(){
		return dao.list();
	}
}

UserDAO.java

package com.dao;
import java.util.Arrays;
import java.util.List;

public class UserDAO {

	// DB 연동 가정
	public List<String> list(){
		List<String> list = Arrays.asList("고길동", "홍길동", "신길동");
		return list;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="userDAO" class="com.dao.UserDAO" /> 		<!-- bean 태그로 등록하면 기본 생성자 호출 가능 -->
	<!--  
		UserDAO userDAO = new UserDAO();
	 --> 
	<bean id="service" class="com.service.UserService"> <!-- id는 식별 가능한 값, class는 클래스 입력 -->
		<property name="dao" ref="userDAO"></property>
	</bean>
	<!-- 다음 코드와 동일
		UserService service = new UserService();
		service.setDAO(UserDAO);
	 -->
</beans>

* 출력 화면 :

 출처

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실습 1일차_Injection (Constructor)

의존성 주입의 방법으로는 크게 3가지가 있다.

• 생성자 주입(Constructor Injection)
• 필드 주입(Field Injection)
• 세터 주입(Setter Injection)

Constructor Injection 방식을 권장하는 이유

생성자 주입 방식을 권장하는 이유
- 단일 책임의 원칙
생성자의 인자가 많아지면서 하나의 클래스가 많은 책임을 떠안는다는 걸 알게된다.
그래서 Constructor Injection을 사용해 의존관계, 복잡성을 쉽게 알 수 있다.
 
- 의존성이 숨는다
DI(Dependency Injection) 컨테이너를 사용한다는 것은 클래스가 자신의 의존성만 책임지는게 아니다.
제공된 의존성 또한 책임진다. 그래서 클래스가 어떤 의존성을 책임지지 않을 때, 메소드나 생성자를 통해
커뮤니케이션이 되어야한다. 하지만 Field Injection은 숨은 의존성만 제공해준다.
 
- DI 컨테이너의 결합성과 테스트의 용이성
DI 프레임워크의 핵심은 관리되는 클래스가 DI 컨테이너에 의존성이 없어야한다.
즉, 필요한 의존성을 전달하면 독립적으로 인스턴스화 할 수 있는 단순 POJO여야한다.
DI 컨테이너 없이 유닛테스트에서 인스턴스화 가능하며, 테스트 가능하다.
컨테이너 결합성이 없다면 관리하거나 관리하지 않는 클래스를 사용할 수 있고, 다른 DI 컨테이너로 전환할 수 있다.
 
- Immutability (불변 객체)
생성자 주입 방식에서 필드는 final로 선언할 수 있다.
하지만, 필드 주입 방식에서는 final로 선언할 수 없어 객체가 변경 가능한 상태가 된다.
 
- 순환 의존성
생성자 주입 방식에서 순환 의존성을 가질 경우 BeanCurrentlyCreationExcepiton을 발생시킴으로써 순환 의존성을 알 수 있다.
1번 클래스가 2번 클래스를 참조하는데, 다시 2번 클래스가 1번 클래스를 참조하는 경우 순환 의존성이라고 부른다.

 Spring Constructor Injection 1

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {

	String mesg; // null ==> 외부에서 문자열을 주입
	
	// 생성자 주입
	public UserService(String m) {
		this.mesg = m;
	}
	public String getMesg() {
		return mesg;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService">
		<constructor-arg name="m" value="helloWorld" />
	</bean>
	<!-- 
		위의 코드는 다음 코드와 동일하다.
		UserService service = new UserService("helloWorld");
	 -->
</beans>

* 출력 화면 

 Spring Constructor Injection 2

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

import com.service.UserService;

public class MainClass {

	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");

		UserService service =
				ctx.getBean("service", UserService.class);
		System.out.println(service);
		
		UserService service2 =
				ctx.getBean("service2", UserService.class);
		System.out.println(service2);
		
		UserService service3 =
				ctx.getBean("service3", UserService.class);
		System.out.println(service3);	
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {
	// 인스턴스
	String mesg; // null ==> 외부에서 문자열을 주입
	int num; 	 // 0 ==> 외부에서 값을 주입
	
	// 생성자 주입
	public UserService(String m) {
		this.mesg = m;
		
	}
	
	public UserService(int n) {
		this.num = n;
	}
	
	// overriding
	public UserService(String m, int n) {
		this.mesg = m;
		this.num = n;
	}
	
	// getter
	public String getMesg() {
		return mesg;
	}
	
	public int getNum() {
		return num;
	}

	// toString
	@Override
	public String toString() {
		return "UserService [mesg=" + mesg + ", num=" + num + "]";
	}	
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="service" class="com.service.UserService">
		<constructor-arg name="m" value="홍길동"></constructor-arg> 
		<!-- 홍길동이 생성자에 의해서 mesg 변수에 저장이 됨 -->
	</bean>

	<bean id="service2" class="com.service.UserService">
		<constructor-arg name="n" value="20"></constructor-arg>
	</bean>
	
	<bean id="service3" class="com.service.UserService">
		<constructor-arg name="m" value="이순신"></constructor-arg>
		<constructor-arg name="n" value="44"></constructor-arg>
	</bean>

</beans>

* 출력 화면

 Spring Constructor Injection 3_Service_dao 추가

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class MainClass {

	public static void main(String[] args) {

		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/user.xml");
		
		UserService service = ctx.getBean("service", UserService.class);
		List<String> list = service.list();
		System.out.println(list);
	}
}

UserService.java

package com.service;
import java.util.List;
import com.dao.UserDAO;

public class UserService {

	UserDAO dao;
	
	// 생성자 주입
	public UserService(UserDAO dao) {
		this.dao = dao;
	}
	
	public List<String> list(){
		return dao.list();
	}
}

UserDAO.java

package com.dao;
import java.util.Arrays;
import java.util.List;

public class UserDAO {

	// DB 연동 가정
	public List<String> list(){
		List<String> list = Arrays.asList("홍길동", "고길동", "신길동");
		return list;
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="dao" class="com.dao.UserDAO" />
	<!-- UserDAO dao = new UserDAO(); -->
	<bean id="service" class="com.service.UserService">
		<constructor-arg name="dao" ref="dao" /> <!-- 생성자를 이용하여 주입하면  constructor-arg-->
	</bean>
	<!-- 
		UserService service = new UserService();
	 -->
</beans>

* 출력 화면 :

 출처

Constructor Injection 방식을 권장하는 이유 : https://n1tjrgns.tistory.com/230

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Spring 실습 1일차_Bean Create

 Bean Create

Main.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.service.UserService;

public class Main {
	public static void main(String[] args) {
		
		// IoC 컨테이너 생성 ==> XXXXApplicationContext	
		ApplicationContext ctx = new GenericXmlApplicationContext("user.xml");
		
		// 생성된 빈 접근
		UserService service = ctx.getBean("service", UserService.class);
		System.out.println(service.getMesg());
	}
}

UserDAO.java

package com.dao;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.service.UserService;

public class UserDAO {
private static final Logger logger = LoggerFactory.getLogger(UserService.class);
	
	public UserDAO() {
		logger.info("UserDAO 생성자");
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {

	private static final Logger logger = LoggerFactory.getLogger(UserService.class);
	
	public UserService() {
		logger.info("UserService 생성자");
	}
	
	// 메서드 추가
	public String getMesg() {
		return "UserService";
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
	
	<!-- bean 등록  (/:empty tag) -->
	<bean id="service" class="com.service.UserService" />
	<bean id="dao" class="com.dao.UserDAO"/>
</beans>

* Console 출력값 : 

Bean Create_Pakage 추가

MainClass.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class MainClass {

	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("com/config/user.xml");
	}
}

UserService.java

package com.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

// POJO Class
public class UserService {

	private static final Logger logger = LoggerFactory.getLogger(UserService.class);
	public UserService() {
		logger.info("UserService 생성자");
	}
	
	// 메서드 추가
	public String getMesg() {
		return "UserService";
	}
}

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

<!-- bean 등록  (/:empty tag) -->
	<bean id="service2" class="com.service.UserService" />
</beans>

 출처

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Spring Framework 용어 정리

 Spring Framework 용어 정리 1 (Version)

① Spring Framework Version : 4.3.30 release

② JDK Version : 1.8

③ DB Version : Oracle 11g Express Edition 

④ Servlet / JSP Version : 추후 확인 예정

⑤ Build Tool ( 빌드 툴 )

⑥ logging → logback

⑦ 버전관리 (형상관리) → Git / Github

 Spring Framework 용어 정리 2 (POJO & IoC & Bean)

① POJO (Plain Old Java Object)

- 어떠한 것도 implements & extends 하지 않음

- public class classname { } → 독립적 => 재사용 ↑

- Spring 환경에 의존적 X

② IoC (Inversion of Control : 제어의 역행)

③ Bean → 클래스를 의미

 Spring Framework 용어 정리 3 (IoC Container)

IoC Container

=> 궁극적인 기능 Bean들의 Life Cycle 관리 

=> IoC 기능을 담당하는 그릇

* IoC 기능 : 외부에서 Bean을 생성하고 필요 시 주입

 Spring Framework 용어 정리 4 (Spring Framework 개발 방법)

① xml 이용 : Bean 등록, 주입, ...

② @(어노테이션) + 최소한의 xml 이용

③ @(어노테이션) 이용 ( Java Coding Configuration )

* Spring Boot는 @(어노테이션) 기반

 Spring Framework 용어 정리 5 (AOP)

AOP ( Aspect Oriented Programming )

 Spring Framework 용어 정리 6 (Spring)

Spring → Java 기반

→ View를 생성하는 방법이 다양한 기술을 활용한다.

ex) JSP/Servlet, Velocity, thymeleaf => html(Spring Boot), pdf, excel, ... 

=>  View Resolve Bean 이용

JSP/Servlet 전담 View Resolver

Internal Resource View Resolver

 Spring Framework 용어 정리 7 (Spring Framework 실행 순서)

@ + 최소한의 xml 이용

① Bean 생성 (Class 생성)

② xml 등록

<bean id="" class="" />

③ IoC Container에게 xml 인식

//XXXXAplicationContext

ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/user.xml");

④ Bean 얻기

ctx.getBean("id", A.class);

 Spring Framework 용어 정리 8 (Bean 간의 사용)

 출처

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