Spring @Component 어노테이션을 이용한 자동 스캔

[JSP/Spring] - Spring @PostConstruct / @PreDestroy 어노테이션과 라이프 사이클
[JSP/Spring] - Spring @Resource 어노테이션

이전 게시물과 연관 있습니다

실행화면(Main06.java)

HomeController [alarmDevice=null, viewer=null, camera1=Camera [number=1], camera2=Camera [number=2], camera3=Camera [number=3], camera4=Camera [number=4]]

@Component라고 되어있는 객체만 오토스캔

Camera 객체를 명시한 이유는 오토 스캔 대상이 아니기 때문 


(단순 작업일 경우엔 편리하지만)
명시적으로 넘겨야될 정보가 많기 때문에 많이 사용되는 편은 아님 

applicationContext02.xml

HomeController.java

package madvirus.spring.chap04.homecontrol;
 
import javax.annotation.Resource;

import org.springframework.stereotype.Component;

@Component("homeController")
public class HomeController {

	private AlarmDevice alarmDevice;
	private Viewer viewer;

	@Resource(name = "camera1")
	private Camera camera1;
	@Resource(name = "camera2")
	private Camera camera2;
	@Resource(name = "camera3")
	private Camera camera3;

	private Camera camera4;

	public void setCamera1(Camera camera1) {
		this.camera1 = camera1;
	}
	public void setCamera2(Camera camera2) {
		this.camera2 = camera2;
	} 
	public void setCamera3(Camera camera3) {
		this.camera3 = camera3;
	}
	@Resource(name = "camera4")
	public void setCamera4(Camera camera4) {
		this.camera4 = camera4;
	}
	@Override
	public String toString() {
		return "HomeController [alarmDevice=" + alarmDevice + ", viewer="
				+ viewer + ", camera1=" + camera1 + ", camera2=" + camera2
				+ ", camera3=" + camera3 + ", camera4=" + camera4 + "]";
	}
	
	
}

Main06.java

package madvirus.spring.chap04.homecontrol;

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

public class Main06 {
	public static void main(String[] args) {
		String[] configLocations = new String[] { "applicationContext02.xml" };
		ApplicationContext context = new ClassPathXmlApplicationContext(
				configLocations);

		HomeController home = context.getBean("homeController",HomeController.class);
		System.out.println(home);
	}
}