2016년 11월 16일 수요일

[자바교육,스프링교육(Spring Framework/Boot)추천_탑크리에듀]#12.스프링DI(생성자주입,XML기반예제)

#12.스프링DI(생성자주입,XML기반예제)

생성자 주입(Constructor  Injection) – XML 기반


[Emp.java]
package edu.ojc.constructor1;
interface Emp {
 public abstract void gotoOffice();
 public abstract void getoffWork();
}

[Programmer.java]
package edu.ojc.constructor1;

class Programmer implements Emp {
public void gotoOffice() {
           System.out.println("프로그래머 출근 합니다.");
}
public void  getoffWork() {
           System.out.println("프로그래머 퇴근 합니다.");
}
}

[Designer.java]
package edu.ojc.constructor1;

class Designer implements Emp {
public void gotoOffice() {
           System.out.println("디자이너 출근 합니다.");
}
public void  getoffWork() {
           System.out.println("디자이너 퇴근 합니다.");
}
}

[Develop.java]
package edu.ojc.constructor1;

public class Develope {
           Emp emp;
           public Develope(Emp emp) {
                     this.emp = emp;
           }

           void coding() {
                   emp.gotoOffice();
                     System.out.println("개발합니다...");
                     emp.getoffWork();
           }
}

[Src/main/resources/ojc3.xml] – C 네임스페이스를 이용한 세터주입
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="programmer" class="edu.ojc.constructor1.Programmer" />
<bean id="designer" class="edu.ojc.constructor1.Designer" />
<bean id="develope" class="edu.ojc.constructor1.Develope" c:emp-ref="programmer" /> 
<!-- 

<bean id="develope" class="edu.ojc.constructor1.Develope">
           <constructor-arg ref="programmer"/>
</bean>
-->
</beans>

[TestMain.java]
package edu.ojc.constructor1;

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

public class TestMain {
public static void main(String[] args) {
     ApplicationContext context = new ClassPathXmlApplicationContext("ojc3.xml");

      Develope dev = (Develope)context.getBean("develope");
      dev.coding();
}
}

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