spring bean调用spring 容器

package com.zdc;


import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;


public class BeanGetContain implements ApplicationContextAware {


private ApplicationContext ctx;


private String msg;


public void getSource() {
Dog1 dog1 = (Dog1) ctx.getBean("dog1");
dog1.getname();
System.out.println(msg);


}


public void setCtx(ApplicationContext ctx) {
this.ctx = ctx;
}


public void setMsg(String msg) {
this.msg = msg;
}


@Override
public void setApplicationContext(ApplicationContext arg0) throws BeansException {
// TODO Auto-generated method stub
ctx = arg0;
}

}

1、首先该类要实现ApplicationContextAware 的接口

2、重写setApplicationContext方法；

3、定义ApplicationContext 对象；并添加set方法

4、配置bean:

5、在初始化该xml的时候我们会发现

会去加载该set方法，将arg0参数及spring容器赋值给ctx.