struts2 标签使用异常 The Struts dispatcher cannot be found

struts2 标签使用异常  The Struts dispatcher cannot be found.  This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]
在JSP 使用struts2标签报错。。
总结后是  web.xml 的配置错误。。
原来的
<!-- struts2 图片上传 -->
<filter>
  <filter-name>struts-cleanup</filter-name>
  <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
</filter>


<filter>
  <filter-name>struts2</filter-name>
  <filter-class>
   org.apache.struts2.dispatcher.FilterDispatcher
  </filter-class>
</filter>

<filter-mapping>
  <filter-name>struts-cleanup</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
  <filter-name>struts2</filter-name>
        <url-pattern>*.action</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
</filter-mapping>

修改后。。需要为  .jsp 配置
<!-- struts2 图片上传 -->
<filter>
  <filter-name>struts-cleanup</filter-name>
  <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
</filter>


<filter>
  <filter-name>struts2</filter-name>
  <filter-class>
   org.apache.struts2.dispatcher.FilterDispatcher
  </filter-class>
</filter>

<filter-mapping>
  <filter-name>struts-cleanup</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
  <filter-name>struts2</filter-name>
        <url-pattern>*.jsp</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
</filter-mapping>
  <filter-name>struts2</filter-name>
        <url-pattern>*.action</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
</filter-mapping>
重新启动。OK




I am moving from other Servers like glassfishv2,tomcat6 to jrun4.

When i practice the tutorial from this link: http://struts.apache.org/2.0.11.1/docs/struts-2-spring-2-jpa-ajax.html

I've got a The Struts dispatcher cannot be found error, even though I successfully run this project on Tomcat6 and glassfishv2.


The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag.

The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]
at org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:60)
at org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBody TagSupport.java:52)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(Component TagSupport.java:49)
at jrun__index2ejspa._jspService(jrun__index2ejspa.java:56)
at jrun.jsp.runtime.HttpJSPServlet.service(HttpJSPServlet.java:43)
at jrun.jsp.JSPServlet.service(JSPServlet.java:119)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invokeNext(JRunRequestDispatcher.j ava:586)
at jrun.servlet.JRunRequestDispatcher.forwardInvoke(JRunRequestDispatche r.java:555)
at jrun.servlet.JRunRequestDispatcher.forward(JRunRequestDispatcher.java :203)
at jrun.servlet.file.FileServlet.service(FileServlet.java:316)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java: 286)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java: 543)
at jrun.servlet.http.WebService.invokeRunnable(WebService.java:172)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.j ava:428)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)



The web.xml is put under WEB-INF. Its content is:

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="person" version="2.4" xmlns=" http://java.sun.com/xml/ns/j2ee" xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<display-name>person</display-name>

<!-- Include this if you are using Hibernate -->
<filter>
<filter-name>Spring OpenEntityManagerInViewFilter</filter-name>
<filter-class>
org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
</filter-class>
</filter>

<filter-mapping>
<filter-name>Spring OpenEntityManagerInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</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>

<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>