deeprun

실습 4일차_MyBatis_Transaction ★

 Spring MyBatis_Transaction ★

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.DeptDTO;
import com.service.DeptService;
 
public class MainClass {
	public static void main(String[] args) {
		
		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/dept.xml");	
		DeptService service = ctx.getBean("deptService", DeptService.class);
		
		// 1. 저장 ==> Spring + Mybatis는 자동으로 commit된다.
		// int num = service.insert(new DeptDTO(99, "IT", "부산"));	
		// int num2 = service.update(new DeptDTO(99, "AI", "서울"));
		// int num3 = service.delete(99);
		
		// transaction 처리	
		try {
			service.tx();
		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
		List<DeptDTO> list = service.selectAll();
		System.out.println(list);
	}
}

DeptDAO.java

package com.dao;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.dto.DeptDTO;
 
@Repository("deptDAO")
public class DeptDAO {
	
	@Autowired
	SqlSession session; // null
	// SqlSessionTemplate session;
	
	public List<DeptDTO> selectAll(){
		return session.selectList("com.config.DeptMapper.selectAll");
	}
 
	public DeptDTO selectByDeptno(int deptno) {
		
		return session.selectOne("com.config.DeptMapper.selectByDeptno", deptno);
	}
 
	public int insert(DeptDTO dto) {
		
		return session.insert("com.config.DeptMapper.insert", dto);
	}
 
	public int update(DeptDTO dto) {
		
		return session.update("com.config.DeptMapper.update", dto);
	}
	
	public int delete(int deptno) {
		
		return session.delete("com.config.DeptMapper.delete", deptno);
	}
}

DeptDTO.java

package com.dto;
import org.apache.ibatis.type.Alias;
 
@Alias("DeptDTO")
public class DeptDTO {
 
	int deptno;
	String dname;
	String loc;
	
	public DeptDTO() {
		
	}
	
	public DeptDTO(int deptno, String dname, String loc) {
		super();
		this.deptno = deptno;
		this.dname = dname;
		this.loc = loc;
	}
 
	public int getDeptno() {
		return deptno;
	}
	public void setDeptno(int deptno) {
		this.deptno = deptno;
	}
	public String getDname() {
		return dname;
	}
	public void setDname(String dname) {
		this.dname = dname;
	}
	public String getLoc() {
		return loc;
	}
	public void setLoc(String loc) {
		this.loc = loc;
	}
	
	@Override
	public String toString() {
		return "DeptDTO [deptno=" + deptno + ", dname=" + dname + ", loc=" + loc + "]";
	}
}

DeptService.java

package com.service;
import java.util.List;
import org.springframework.stereotype.Service;
import com.dto.DeptDTO;
 
@Service("deptService")
public interface DeptService {
 
	// 전체 레코드 조회
	public List<DeptDTO> selectAll();
	
	// 특정 레코드 조회
	public DeptDTO selectByDeptno(int deptno);
	
	// 저장
	public int insert(DeptDTO dto);
	
	// 수정
	public int update(DeptDTO dto);
	
	// 삭제
	public int delete(int deptno);
	
	// 트랜잭션 실습 메서드
	public void tx() throws Exception;
	
}

DeptServiceImpl.java

package com.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.dao.DeptDAO;
import com.dto.DeptDTO;
 
@Service("deptService")
public class DeptServiceImpl implements DeptService {
	
	@Autowired
	DeptDAO dao; //null
 
	@Override
	public List<DeptDTO> selectAll() {
		
		return dao.selectAll();
	}
 
	@Override
	public DeptDTO selectByDeptno(int deptno) {
		
		return dao.selectByDeptno(deptno);
	}
 
	@Override
	public int insert(DeptDTO dto) {
		
		return dao.insert(dto);
	}
 
	@Override
	public int update(DeptDTO dto) {
		
		return dao.update(dto);
	}
	
	@Override
	public int delete(int deptno) {
		
		return dao.delete(deptno);
	}
 
	// 트랜잭션 실습 메서드
	@Transactional
	@Override
	public void tx() throws Exception {
		int num = dao.insert(new DeptDTO(96, "IT", "서울"));
		int num2 = dao.delete(1);
	}
}

dept.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"
	xmlns:tx="http://www.springframework.org/schema/tx"
	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
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
 
  <!-- mybatis 연동 -->
  <!-- 1. jdbc.properties 등록 -->
  <context:property-placeholder location="classpath:com/config/jdbc.properties"/>
 
  <!-- 2. DBCP2 등록 (Connection Pool 기능을 가지고 있음) -->
  <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
    <property name="driverClassName" value="${jdbc.oracle}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.userid}" />
    <property name="password" value="${jdbc.passwd}" />
  </bean>
  
  <!-- 트랜잭션 처리 -->
  <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- (this dependency is defined somewhere else) -->
        <property name="dataSource" ref="dataSource"/>
    </bean>
  <tx:annotation-driven transaction-manager="txManager"/>
  <!-- 트랜잭션 처리 -->
  
  <!-- 3. SqlSessionFactoryBean 등록 -->
  <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="mapperLocations">
      <list>
		<value>classpath:com/config/DeptMapper.xml</value>      
      </list>
    </property>
    <property name="typeAliases">
      <list>
        <value>com.dto.DeptDTO</value>
      </list>
    </property>
  </bean>
  
  <!-- 4. SqlSessionTemplate 등록 -->
  <bean id="sessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
     <constructor-arg name="sqlSessionFactory" ref="sessionFactory" />
  </bean>
  <!-- mybatis 연동 -->
  <context:component-scan base-package="com.*" />
 
</beans>

DeptMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.config.DeptMapper">
 
	<select id="selectAll" resultType="DeptDTO">
	<![CDATA[
		select deptno,dname,loc
		from dept
		order by deptno desc
		]]>
	</select>
	
	<select id="selectByDeptno" resultType="DeptDTO"
		parameterType="int">
		<![CDATA[
		select deptno,dname,loc
		from dept
		where deptno = #{deptno}
		]]>
	</select>
	
	<insert id="insert" parameterType="DeptDTO">
	<![CDATA[
	    insert into dept ( deptno, dname, loc )
	    values ( #{deptno} , #{dname} , #{loc}) 
	    ]]>
	</insert>
	
	<update id="update" parameterType="DeptDTO">
	<![CDATA[
	   update dept 
	   set dname = #{dname} , loc=#{loc}
	   where deptno = #{deptno}
	   ]]>
	</update>
	
	<delete id="delete" parameterType="int">
	<![CDATA[
	   delete from dept
	   where deptno = #{deptno}
	   ]]>
	</delete>
 
</mapper>

jdbc.properties

#주석입니다.
#문법은 key=value
jdbc.oracle=oracle.jdbc.driver.OracleDriver
jdbc.url=jdbc:oracle:thin:@localhost:1521:xe
jdbc.userid=????? #DB 계정
jdbc.passwd=????? #DB 계정 패스워드

* 출력 화면 

 출처

Mybatis : 

+ 강의 교재

실습 4일차_MyBatis ★

 Spring MyBatis ★

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.DeptDTO;
import com.service.DeptService;
 
public class MainClass {
	public static void main(String[] args) {
		
		ApplicationContext ctx = new GenericXmlApplicationContext("classpath:com/config/dept.xml");
		
		DeptService service = ctx.getBean("deptService", DeptService.class);
		
		// 1. 저장 ==> Spring + Mybatis는 자동으로 commit된다.
		// int num = service.insert(new DeptDTO(99, "IT", "부산"));
		// int num2 = service.update(new DeptDTO(99, "AI", "서울"));
		// int num3 = service.delete(99);
		
		List<DeptDTO> list = service.selectAll();
		System.out.println(list);
	}
}

DeptDAO.java

package com.dao;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.dto.DeptDTO;
 
@Repository("deptDAO")
public class DeptDAO {
	
	@Autowired
	SqlSession session; // null
	// SqlSessionTemplate session;
	
	public List<DeptDTO> selectAll(){
		return session.selectList("com.config.DeptMapper.selectAll");
	}
	
	public DeptDTO selectByDeptno(int deptno) {
		
		return session.selectOne("com.config.DeptMapper.selectByDeptno", deptno);
	}
 
	public int insert(DeptDTO dto) {
		
		return session.insert("com.config.DeptMapper.insert", dto);
	}
 
	public int update(DeptDTO dto) {
		
		return session.update("com.config.DeptMapper.update", dto);
	}
	
	public int delete(int deptno) {
		
		return session.delete("com.config.DeptMapper.delete", deptno);
	}
}

DeptDTO.java

package com.dto;
import org.apache.ibatis.type.Alias;
 
@Alias("DeptDTO")
public class DeptDTO {
 
	int deptno;
	String dname;
	String loc;
	
	public DeptDTO() {
		
	}
	
	public DeptDTO(int deptno, String dname, String loc) {
		super();
		this.deptno = deptno;
		this.dname = dname;
		this.loc = loc;
	}
 
	public int getDeptno() {
		return deptno;
	}
	public void setDeptno(int deptno) {
		this.deptno = deptno;
	}
	public String getDname() {
		return dname;
	}
	public void setDname(String dname) {
		this.dname = dname;
	}
	public String getLoc() {
		return loc;
	}
	public void setLoc(String loc) {
		this.loc = loc;
	}
	
	@Override
	public String toString() {
		return "DeptDTO [deptno=" + deptno + ", dname=" + dname + ", loc=" + loc + "]";
	}
	
}

DeptService.java

package com.service;
import java.util.List;
import org.springframework.stereotype.Service;
import com.dto.DeptDTO;
 
@Service("deptService")
public interface DeptService {
 
	// 전체 레코드 조회
	public List<DeptDTO> selectAll();
	
	// 특정 레코드 조회
	public DeptDTO selectByDeptno(int deptno);
	
	// 저장
	public int insert(DeptDTO dto);
	
	// 수정
	public int update(DeptDTO dto);
	
	// 삭제
	public int delete(int deptno);
}

DeptServiceImpl.java

package com.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.dao.DeptDAO;
import com.dto.DeptDTO;
 
@Service("deptService")
public class DeptServiceImpl implements DeptService {
	
	@Autowired
	DeptDAO dao; //null
 
	@Override
	public List<DeptDTO> selectAll() {
		
		return dao.selectAll();
	}
 
	@Override
	public DeptDTO selectByDeptno(int deptno) {
		
		return dao.selectByDeptno(deptno);
	}
 
	@Override
	public int insert(DeptDTO dto) {
		
		return dao.insert(dto);
	}
 
	@Override
	public int update(DeptDTO dto) {
		
		return dao.update(dto);
	}
	
	@Override
	public int delete(int deptno) {
		
		return dao.delete(deptno);
	}
 
}

dept.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">
 
  <!-- mybatis 연동 -->
  <!-- 1. jdbc.properties 등록 -->
  <context:property-placeholder location="classpath:com/config/jdbc.properties"/>
 
  <!-- 2. DBCP2 등록 (Connection Pool 기능을 가지고 있음) -->
  <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
    <property name="driverClassName" value="${jdbc.oracle}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.userid}" />
    <property name="password" value="${jdbc.passwd}" />
  </bean>
  
  <!-- 3. SqlSessionFactoryBean 등록 -->
  <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="mapperLocations">
      <list>
		<value>classpath:com/config/DeptMapper.xml</value>      
      </list>
    </property>
    <property name="typeAliases">
      <list>
        <value>com.dto.DeptDTO</value>
      </list>
    </property>
  </bean>
  
  <!-- 4. SqlSessionTemplate 등록 -->
  <bean id="sessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
     <constructor-arg name="sqlSessionFactory" ref="sessionFactory" />
  </bean>
  <!-- mybatis 연동 -->
  <context:component-scan base-package="com.*" />
 
</beans>

DeptMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.config.DeptMapper">
 
	<select id="selectAll" resultType="DeptDTO">
	<![CDATA[
		select deptno,dname,loc
		from dept
		order by deptno desc
		]]>
	</select>
	
	<select id="selectByDeptno" resultType="DeptDTO"
		parameterType="int">
		<![CDATA[
		select deptno,dname,loc
		from dept
		where deptno = #{deptno}
		]]>
	</select>
	
	<insert id="insert" parameterType="DeptDTO">
	<![CDATA[
	    insert into dept ( deptno, dname, loc )
	    values ( #{deptno} , #{dname} , #{loc}) 
	    ]]>
	    
	</insert>
	
	<update id="update" parameterType="DeptDTO">
	<![CDATA[
	   update dept 
	   set dname = #{dname} , loc=#{loc}
	   where deptno = #{deptno}
	   ]]>
	</update>
	
	<delete id="delete" parameterType="int">
	<![CDATA[
	   delete from dept
	   where deptno = #{deptno}
	   ]]>
	</delete>
 
</mapper>

jdbc.properties

#주석입니다.
#문법은 key=value
jdbc.oracle=oracle.jdbc.driver.OracleDriver
jdbc.url=jdbc:oracle:thin:@localhost:1521:xe
jdbc.userid=????? #DB 계정
jdbc.passwd=????? #DB 계정 패스워드

* 출력 화면 

 출처

Mybatis : 

+ 강의 교재

실습 4일차_Component_Scan

 Spring Component_Scan

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);
	}
}

UserDAO.java

package com.dao;
import java.util.Arrays;
import java.util.List;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
 
// @Component // @Component는 전부 Class Level
@Repository("dao")
public class UserDAO {
	
	public UserDAO() {
		System.out.println("UserDAO 생성자");
	}
 
	// DB 연동 가정
	public List<String> list(){
		List<String> list = Arrays.asList("고길동", "홍길동", "신길동");
		return list;
	}
}

UserService.java

package com.service;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import com.dao.UserDAO;
 
// POJO Class
// @Component // @Component는 전부 Class Level
@Service("service")
public class UserService {
	
	@Autowired
	UserDAO dao; // property (인스턴스 변수)
	
	public UserService() {
		System.out.println("UserService 생성자");
	}
	
	public List<String> list(){
		return dao.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: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 /> --> <!-- empty tag -->
	
	<!-- 내부적으로 <context:annotation-config /> 기능 포함 -->
 
	<!-- 마킹된(Component) Bean들의 Pakage Name 지정 -->
	<context:component-scan base-package="com.service, com.dao" /> <!-- empty tag -->
	<!-- <context:component-scan base-package="com.*" /> -->
</beans>

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

* context 활성화 방법

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

* 출력 화면 

 출처

* Component_Scan : 

+ 강의 교재

실습 4일차_@Value_resourceBundle

 Spring @Value_resourceBundle

MainClass.java

import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import com.dto.Cat;
 
public class MainClass {
	public static void main(String[] args) {
		
		// IoC Container
		ApplicationContext ctx = 
				new GenericXmlApplicationContext("classpath:com/config/test.xml");
 
		Cat c = ctx.getBean("cat1", Cat.class);
		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;
import org.springframework.beans.factory.annotation.Value;
 
public class Cat {
	
	@Value("${cat.name}")
	String name;
	@Value("${cat.age}")
	int age;
	@Value("${cat.sex}")
	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 + "]";
	}
	
}

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: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 />
 
	<context:property-placeholder location="classpath:com/config/cat.properties" file-encoding="utf-8"/> 
 
	<bean id="cat1" class="com.dto.Cat" />
	<!-- 
	<bean id="cat1" class="com.dto.Cat"> < 생성자로 주입   property라는 setter method 이용-->
		<!-- 	<property name="name" value="나비" />
		<property name="age" value="3" />
		<property name="sex" value="암컷" />
	</bean>
	 -->
 
</beans>

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

* context 활성화 방법

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

cat.properties

cat.name = 망치 
cat.age = 2
cat.sex = 수컷

* 출력 화면 

 출처

@Value: 

+ 강의 교재

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 : 

+ 강의 교재

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);
	}
}