最近做專案遇到一個Filter需要配置多個url-pattern,上網查了下資料，經測試，現總結下
一、完全錯誤的方式

1. <filter>
2.     <filter-name>authority</filter-name>
3.     <filter-class>com.util.AuthorityFilter</filter-class>
4. </filter>
5. <filter-mapping>
6.     <filter-name>authority</filter-name>
7.     <url-pattern
   >/pages/cmm/*;/pages/genbill/*</url-pattern>
8. </filter-mapping>

二、有一定作用，但不能實現需要的效果，只會過濾最下面配置的url-pattern。

1. <filter>
2.     <filter-name>authority</filter-name>
3.     <filter-class>com.util.AuthorityFilter</filter-class>
4. </filter>
5. <filter-mapping>
6.     <filter-name
   >authority</filter-name>
7.     <url-pattern>/pages/cmm/*</url-pattern>
8.        <url-pattern>/pages/genbill/*</url-pattern>
9. </filter-mapping>

三、現在給出正確的配置方式

1. <filter>
2.     <filter-name>authority</filter-name>
3.     <filter-class>com.util.AuthorityFilter</filter-class
   >
4. </filter>
5. <filter-mapping>
6.     <filter-name>authority</filter-name>
7.        <url-pattern>/pages/genbill/*</url-pattern>
8. </filter-mapping>
9. <filter-mapping>
10.     <filter-name>authority</filter-name>
11.     <url-pattern>/pages/cmm/*</url-pattern>
12. </filter-mapping>