DelegatingFilterProxy - Spring

参考:

http://docs.spring.io/spring/docs/3.2.x/javadoc-api/org/springframework/web/filter/DelegatingFilterProxy.html

在Spring中,使用下面的代码让Spring代理一个Filter,

targetBeanName: 用来指定在Spring上下文中的Bean的名称. 如果不指定,则默认寻找filter-name指定的名称的Bean

targetFilterLifecycle: 用来指定是否强制让容器管理其生命周期,如果指定为true,则会调用Filter.init and Filter.destroy 的生命周期方法,否则不会调用

 

web.xml: 

<filter>
	<filter-name>xxxFilter</filter-name>
	<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
	<init-param>
		<param-name>targetBeanName</param-name>
		<param-value>aaaFilter</param-value>
	</init-param>
	<init-param>
		<param-name>targetFilterLifecycle</param-name>
		<param-value>true</param-value>
	</init-param>
</filter>

<filter-mapping>
	<filter-name>xxxFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

 

applicationContext.xml: <bean id="aaaFilter" class="实现了javax.servlet.Filter接口的类" />

或使用注解:@Component("aaaFilter")也可.