【spring教程之九】spring注解@Autowired自动装配

浏览数：172 / 时间：2015年06月08日

1、首先spring的xml配置文件加上一句话

		<context:annotation-config></context:annotation-config><!-- 自动装配 -->
 
		 <bean id="piano" class="com.test.pro.Instrument">
		      <property name="name" value="钢琴"></property>
		</bean>
 
		<bean id="jack" class="com.test.pro.Singer">
		</bean>

2、

package com.test.pro;

import java.util.List;

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

public class Singer {
	private Instrument piano;

	
	
	public Instrument getPiano() {
		return piano;
	}


	@Autowired  /*这个地方加上注解，会自动注入*/
	public void setPiano(Instrument piano) {
		this.piano = piano;
	}



	public void saying()
	{
		System.out.println(piano.getName());
	}
}

或者采用直接注入的办法

package com.test.pro;

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

public class Singer {
	@Autowired  /*这个地方加上注解，会自动注入*/
	private Instrument piano;

	public void saying()
	{
		System.out.println(piano.getName());
	}
}

3、测试类

package com.test.pro;

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

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ApplicationContext ctx=new ClassPathXmlApplicationContext("spring.xml");
		Singer singer=(Singer)ctx.getBean("jack");
		singer.saying();

		
	}
	
	

}

输出结果

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