通过ApplicationContextAware获取bean

通过ApplicationContextAware获取bean

2011-03-02 10:06

packageorg.company.xxx;
 
importorg.springframework.beans.BeansException;
importorg.springframework.context.ApplicationContext;
importorg.springframework.context.ApplicationContextAware;
/**
* 获取spring容器，以访问容器中定义的其他bean
*/
publicclass SpringContextUtil implements ApplicationContextAware {
 
// Spring应用上下文环境
privatestatic ApplicationContext applicationContext;
 
/**
* 实现ApplicationContextAware接口的回调方法，设置上下文环境
*/
publicvoid setApplicationContext(ApplicationContext applicationContext)throws BeansException  {
SpringContextUtil.applicationContext= applicationContext;
}
 
publicstatic ApplicationContext getApplicationContext(){
return applicationContext;
}
 
/**
* 获取对象
* 这里重写了bean方法，起主要作用
* @param name
* @return Object 一个以所给名字注册的bean的实例
* @throws BeansException
*/
publicstaticObject getBean(String beanId)throws BeansException {
return applicationContext.getBean(beanId);
}
}

Bean配置：

<beanid="SpringContextUtil"class="org.company.xxx.SpringContextUtil"/>

实现了ApplicationContextAware接口，在Bean的实例化时会自动调用setApplicationContext()方法!