[Spring]手工装配之注解装配/@Resource/@Autowired/@Qualifier

手工xml装配太太太太太麻烦了……注解应运而生。并且自动装配不是很好……

用了注解就只需要在xml配置bean即可，其他都不需要加了

基本xml头

<?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">

	<context:annotation-config />

	
</beans>

注解

@Required@Autowired一般同用

单个@Autowired默认按类型装配

两个配合为按名称，效果作用同@Resource

形如：

@Autowired @Qualifier("student")

package com.yiki.beanimp;

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

import com.yiki.bean.TeacherInterface;

public class Teacher implements TeacherInterface {
	
	
	
	@Autowired @Qualifier("student")
	private Student student;
	
	public Teacher() {
		// TODO Auto-generated constructor stub
	}

	public Student getStudent() {
		return student;
	}

	public void setStudent(Student student) {
		this.student = student;
	}
	
	/* (non-Javadoc)
	 * @see com.yiki.beanimp.TeacherInterface#Tsave()
	 */
	@Override
	public void Tsave(){
		System.out.println("teacher");
		student.SSave();
	}

}

@Resource

默认按名称装配

package com.yiki.beanimp;

import javax.annotation.Resource;

import com.yiki.bean.StudentInterface;

public class Student implements StudentInterface {

	/*###################################################################
	 * ### @Resource(name="")如果name不指定，默认为属性名（就是monitor,而不是类类型名
	 * ###如果找不到，它会自动根据类型就是Monitor来找
	 * ### 可以用在set方法上或者成员定义上，二选一
	 * ###############################################################
	 * */
	private String sname;
	@Resource
	private Monitor monitor;

	public Monitor getMonitor() {
		return monitor;
	}

	public void setMonitor(Monitor monitor) {
		this.monitor = monitor;
	}

	public Student() {
	}

	public String getSname() {
		return sname;
	}

	public void setSname(String sname) {
		this.sname = sname;
	}

	@Override
	public void SSave() {

		System.out.println("Student");
		monitor.Msave();
	}

}

package com.yiki.beanimp;

import com.yiki.bean.MonitorInterface;

public class Monitor implements MonitorInterface {
	private String monitor;
	
	public Monitor() {
	}
	
	
	
	public String getMonitor() {
		return monitor;
	}



	public void setMonitor(String monitor) {
		this.monitor = monitor;
	}



	/* (non-Javadoc)
	 * @see com.yiki.beanimp.MonitorInterface#Msave()
	 */
	@Override
	public  void Msave(){
		
		System.out.println("monitor");
	}

}