java - How to configure URL patterns to have servlet and Struts2 to work simultaneously?

Question

Why my filtering does not work for me and how to setup it to work?

There is my web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
    <display-name>GameServlet</display-name>
    <servlet-name>GameServlet</servlet-name>
    <servlet-class>ajaxdemo.action.GameServlet</servlet-class>
    <load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>GameServlet</servlet-name>
    <url-pattern>/gameservlet</url-pattern>
</servlet-mapping>
<filter>
    <filter-name>struts2</filter-name>
    <filter-class>
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

On this configuration GameServlet does not receive anything and web server reports that there are no action mapping for /gameservlet URL.

If I comment filter-mapping this servlet works fine by this URL.

How to get working Struts filters and servlet filter simultaneously, the point is servlet should work only with /gameservlet URL, all others should be processed by Struts. I cannot understand how to create URL patterns for my case.

Answer 1

You should add excludePattern constant to struts.xml to exclude servlet mapping URL from Struts processing.

<struts>
    <constant name="struts.action.excludePattern" value="/gameservlet/?.*"/>
    ...
</struts>