Filter 配置多个URL-PATTERN

最近做项目遇到一个Filter需要配置多个url-pattern,上网查了下资料，经测试，现总结下
一、完全错误的方式

<filter>
 <filter-name>authority</filter-name>
  <filter-class>com.util.AuthorityFilter</filter-class>
</filter>
<filter-mapping>
 <filter-name>authority</filter-name>
 <url-pattern>/pages/cmm/*;/pages/genbill/*</url-pattern>
</filter-mapping>

<filter>
	<filter-name>authority</filter-name>
	<filter-class>com.util.AuthorityFilter</filter-class>
</filter>
<filter-mapping>
	<filter-name>authority</filter-name>
	<url-pattern>/pages/cmm/*;/pages/genbill/*</url-pattern>
</filter-mapping>

二、有一定作用，但不能实现需要的效果，只会过滤最下面配置的url-pattern。

<filter>
 <filter-name>authority</filter-name>
  <filter-class>com.util.AuthorityFilter</filter-class>
</filter>
<filter-mapping>
 <filter-name>authority</filter-name>
 <url-pattern>/pages/cmm/*</url-pattern>
 <url-pattern>/pages/genbill/*</url-pattern>
</filter-mapping>

<filter>
	<filter-name>authority</filter-name>
	<filter-class>com.util.AuthorityFilter</filter-class>
</filter>
<filter-mapping>
	<filter-name>authority</filter-name>
	<url-pattern>/pages/cmm/*</url-pattern>
       <url-pattern>/pages/genbill/*</url-pattern>
</filter-mapping>

三、现在给出正确的配置方式

<filter>
 <filter-name>authority</filter-name>
  <filter-class>com.util.AuthorityFilter</filter-class>
</filter>
<filter-mapping>
 <filter-name>authority</filter-name>
 <url-pattern>/pages/genbill/*</url-pattern>
</filter-mapping>
<filter-mapping>
 <filter-name>authority</filter-name>
 <url-pattern>/pages/cmm/*</url-pattern>
</filter-mapping>