求助大牛SpringContextPublisher ..

你好，想跟你请教个问题：

SpringContextPublisher 下的applicationContext 总是为null、

public class SpringContextPublisher implements ApplicationContextAware {

 private static ApplicationContext applicationContext;  

 public void setApplicationContext(ApplicationContext arg0)

 throws BeansException {

  this.applicationContext = applicationContext; 

 }

 public Object getBean(String name) throws BeansException {   

            return applicationContext.getBean(name);   

 }  

}