import org.springframework.beans.BeansException;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.ApplicationContextAware;

 import org.springframework.stereotype.Component;

 /**

  * spring上下文的持有者:

  * ApplicationContextAware 可感知ApplicationContex,

  * 只要实现了该接口的类，交给Spring管理后，Spring就能感知到,

  * 感知后就会调用setApplicationContext注入当前容器的上下文.

  * @author lne

  */

 @Component

 public class SpringApplicationContextHolder implements ApplicationContextAware {

     // 使用一个变量接受ApplicationContext

     private static ApplicationContext ctx = null;

     @Override

     public void setApplicationContext(ApplicationContext ctx) throws BeansException {

         System.out.println(ctx);

         SpringApplicationContextHolder.ctx = ctx;

     }

     public static Object getBean(String name) {

         return ctx.getBean(name);

     }

     public static Object getBean(Class clazz) {

         return ctx.getBean(clazz);

     }

 }