struts2中<jsp:forward>跳转时报404错误的问题

index.jsp页面：
  <jsp:forward page="show.action"></jsp:forward>

在struts.xml配置如下：
  <package name="struts2" extends="struts-dafult">
  <action name="show" class="action.ShowAction">
  	<result name="showinfo">/showinfo.jsp</result>
  </action>
  </package>
在运行时出现404错误（找不到 show.action )

问题原因：

struts2拦截器把forward这个请求拦截了。

解决方法一:

修改web.xml文件

 <filter>
  <span style="white-space:pre">	</span><filter-name>struts2</filter-name>
  <span style="white-space:pre">	</span><filter-class>
<span style="white-space:pre">		</span>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
<span style="white-space:pre">	</span></filter-class>
  </filter>
  <filter-mapping>  <span style="white-space:pre">	</span>
  <span style="white-space:pre">	</span><filter-name>struts2</filter-name>
  <span style="white-space:pre">	</span><url-pattern>/*</url-pattern>
  </filter-mapping>


修改为：
  <filter>
  <span style="white-space:pre">	</span><filter-name>struts2</filter-name>
  <span style="white-space:pre">	</span><filter-class>
<span style="white-space:pre">		</span>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
<span style="white-space:pre">	</span></filter-class>
  </filter>
  <filter-mapping>  <span style="white-space:pre">	</span>
  <span style="white-space:pre">	</span><filter-name>struts2</filter-name>
  <span style="white-space:pre">	</span><url-pattern>/*</url-pattern>
<span style="white-space:pre">	</span><dispatcher>INCLUDE</dispatcher>    //增加对<jsp:include page="xxx.action"/>及其<s:include value="xxx.action"/>支持
  <span style="white-space:pre">	</span><dispatcher>REQUEST</dispatcher>
  <span style="white-space:pre">	</span><dispatcher>FORWARD</dispatcher>
  </filter-mapping>

解决方法二:

用javascript解决，让请求执行到页面时，接着执行如下的代码，发现页面需要重载，然后就重新发送请求REQUEST，这样当然就会被过滤器所截获到了。

<script language="javascript">location.replace(URL)</script>

<meta http-equiv="refresh" content="0;URL=xxx.action">

转自http://yanln.iteye.com/blog/1602770

http://www.blogjava.net/LaozhonG/archive/2012/02/26/370793.html