servlet中的filter对servlet过滤的执行顺序

在配置web工程中的web.xml文件时，filter可以过滤servlet，那对同一个servlet配置多个filter时，执行顺序是怎样的呢？看如下配置：

<filter>
  	<filter-name>CheckLoginFilter</filter-name>
  	<filter-class>web.CheckLoginFilter</filter-class>
 </filter>
 <filter-mapping>
        <filter-name>CheckLoginFilter</filter-name>
        <servlet-name>mvc-dispatcher</servlet-name>
</filter-mapping>

<filter>
	<filter-name>Set Character Encoding</filter-name>
	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
</filter>
<filter-mapping>
	<filter-name>Set Character Encoding</filter-name>
	<servlet-name>mvc-dispatcher</servlet-name>
</filter-mapping>

<filter>
	<filter-name>httpPutFormFilter</filter-name>
	<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>
<filter-mapping>
	<filter-name>httpPutFormFilter</filter-name>
	<servlet-name>mvc-dispatcher</servlet-name>
</filter-mapping>

<servlet>
	<servlet-name>mvc-dispatcher</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:mvc-dispatcher-servlet.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
	<servlet-name>mvc-dispatcher</servlet-name>
	<url-pattern>/</url-pattern>
</servlet-mapping>
 

 filter的执行顺序是根据filter-mapping配置的先后执行的。按照上面的配置，第一个filter执行是CheckLoginFilter。那么servlet什么时候执行呢？

那要看一下webx中配置的执行顺序：listener->filter->servlet。

所以上面的配置执行顺序是：CheckLoginFilter->Set Character Encoding->httpPutFormFilter->mvc-dispatcher。