Servlet Filter for all requests

Question

I am wondering, how can I set in the web.xml a Filter that is called on every request?

Answer 1

just create a filter, and map it to /*

e.g.

    <filter>
        <filter-name>MyFilter</filter-name>
        <filter-class>com.mycompany.MyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>MyFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

Answer 2

Add a filter mapping with '*' wildcard.

  <filter-mapping>
   <filter-name>TestFilter</filter-name>
   <url-pattern>*</url-pattern>
 </filter-mapping>