Spring IoC의 DI 세터 주입(Setter Injection) 예제 - XML기반[JAVA/JSP/Spring/JDBC/자바프레임워크/스프링기초실무학원/전액무료교육]

Spring IoC의 DI중 하나인 Setter 주입 예제를 만들어 보자.

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"

       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

      

       <bean id="car" class="onj.spring.di.Car"/>

       <bean id="audi" class="onj.spring.di.Audi">

             <property name="car"><ref bean="car"/></property>   

       </bean>     

</beans>

2.     CarMaker.java

package onj.spring.di;

public interface CarMaker {

              public Car sell();

}

3.     Car.java

package onj.spring.di;

public class Car {

       private String name;

         public Car() {

         }

         public Car(String name) {

            this.name = name;

         }

         public String getName() {

            return this.name;

         }

         public void setName(String name) {

            this.name  = name;

         }

}

4.     Audi.java(Audi의 setCar 메소드로 Car 인스턴스가 주입된다)

package onj.spring.di;

public class Audi implements CarMaker {

       private Car car;

      

       public Audi() {}

      

      

       public void setCar(Car car) {

             this.car = car;

       }

      

       public Car sell() {

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

             return car;

       }

}

5.     SetterInjectionExam.java

package onj.spring.di;

import org.springframework.context.support.GenericXmlApplicationContext;

public class SetterInjectionExam {

   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());

   }

}

  

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