(ORACLEJAVA개발자실무교육,오엔제이프로그래밍실무교육센터)Spring IoC 생성자 주입(Constructor Injection)을 Annotation기반으로 이용하여 만들어 보자.

Spring IoC 생성자 주입(Constructor Injection)을 Annotation기반으로 이용하여 만들어 보자.

오라클자바커뮤니티에서 설립한 오엔제이프로그래밍 실무교육센터

(오라클SQL, 튜닝, 힌트,자바프레임워크, 안드로이드, 아이폰, 닷넷  실무전문 강의)

www.onjprogramming.co.kr

1.     /src/main/resources/xmlBeanFactory.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-3.0.xsd

             http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

       <description>Example configuration to get you started.</description>

       <context:annotation-config/>

       <context:component-scan base-package="onj.spring.di2" />   

</beans>

<!--[if !supportLists]-->2.     <!--[endif]-->CarMaker.java

package onj.spring.di2;

public interface CarMaker {

       public Car sell();

}

<!--[if !supportLists]-->3.     <!--[endif]-->Audi.java

package onj.spring.di2;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

//자바코드에서 주입될 빈이라고 정의함. XML파일에서 "sudi"정의안해도됨

@Service("audi")

public class Audi implements CarMaker {

       private Car car;

      

       @Autowired   //빈 생성시 자동 엮임

       public Audi(Car car) {

             this.car = car;

       }

      

       public Car sell() {

             this.car.setName("Audi A6");

             return car;

       }

}

<!--[if !supportLists]-->4.     <!--[endif]-->Car.java

package onj.spring.di2;

import org.springframework.stereotype.Service;

//Audi에 주입될 클래스이므로 car 라는 이름으로 XML 파일에서 빈정의함

@Service("car")

public class Car {

       private String name;

         public Car() {

         }

         public String getName() {

            return this.name;

         }

         public void setName(String name) {

            this.name  = name;

         }

}

<!--[if !supportLists]-->5.     <!--[endif]-->ConstructorInjectionExam.java

package onj.spring.di2;

import org.springframework.context.support.GenericXmlApplicationContext;

public class ConstructorInjectionExam {

       public static void main(String[] args) {

             GenericXmlApplicationContext ctx = new GenericXmlApplicationContext();

             ctx.load("classpath:xmlBeanFactory.xml");

             ctx.refresh();

            

             CarMaker carMaker = ctx.getBean("audi", Audi.class);

             Car c = carMaker.sell();

             System.out.println("I sold a car... " + c.getName());

       }

}

<!--[if !supportLists]-->6.     <!--[endif]-->[결과]

I sold a car... Audi A6

[출처] 오라클자바커뮤니티 - http://www.onjprogramming.co.kr/oraclejavanew/oraclejava/bbs/board.php?bo_table=LecSpring&wr_id=196