Java servlet filter parameter

Question

I have a filter which I want to use on multiple pages:

<filter>
  <filter-name>PermissionFilter</filter-name>
  <filter-class>filters.PermissionFilter</filter-class>
</filter>
.......
<filter-mapping>
  <filter-name>PermissionFilter</filter-name>
  <url-pattern>/faces/folder1</url-pattern>
</filter-mapping>
<filter-mapping>
  <filter-name>PermissionFilter</filter-name>
  <url-pattern>/faces/folder2</url-pattern>
</filter-mapping>

It is possible to specify a parameter(s) in filter mapping? Something like that:

<filter-mapping>
  <filter-name>PermissionFilter</filter-name>
  <url-pattern>/faces/folder2</url-pattern>
  <init-param>
    <param-name>permission</paramn-name>
    <param-value>permssionNameWhichIWantToVerify</param-value>
  </init-param>

Thank you!

Answer 1

不需要。您要做的是为要使用的每个参数组合声明一次过滤器，然后将具有正确参数组合的正确过滤器映射到适当的URL。