转自：http://blog.sina.com.cn/s/blog_4c2c2a0c0100dh67.html
若你的servlet要多个地址，或你的filter需要过滤不同的url如有*.jsp,*.do等，有好几个怎么做呢
其实很简单,以下的filter就是一个例子，encodingFilter配置了过滤了两个url-pattern
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>com.cs.cms.filter.EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>gbk</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.html</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>