SpringUtil

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


/**
ApplicationContextAware初始化


通过它Spring容器会自动通过调用ApplicationContextAware接口中的setApplicationContext方法把上下文环境对象注入具体实现类中。


我们在ApplicationContextAware的实现类中，就可以通过这个上下文环境对象得到Spring容器中的Bean。
**/
public class SpringUtil implements ApplicationContextAware, DisposableBean
{
	
	public SpringUtil(){}


	/** 属性注入: Spring框架应用上下文对象 */ 
	private static ApplicationContext applicationContext = null;
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException
	{
		applicationContext = applicationContext;
	}


	public void destroy()
		throws Exception
	{
		applicationContext = null;
	}


	public static ApplicationContext getApplicationContext()
	{
		return applicationContext;
	}


	public static Object getBean(String name)
		throws BeansException
	{
		return applicationContext.getBean(name);
	}


}


/**
applicationContext.xml中配置:
	<bean id="springUtil" class="net.eleshop.util.SpringUtil" lazy-init="false" />


web.xml中配置:
	<!-- 初始化Spring容器时加载的核心配置文件-->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath*:/applicationContext*.xml</param-value>
	</context-param>
	<!-- 配置Spring的核心监听器: ContextLoaderListener 初始化Spring容器-->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
**/