The Struts dispatcher cannot be found. This is usually caused by using Struts ta

HTTP Status 500 -

---

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: 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] org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

 

root cause

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] org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:60) org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport.java:52) org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:49) org.apache.jsp.index_jsp._jspx_meth_s_005ftextfield_005f0(index_jsp.java:122) org.apache.jsp.index_jsp._jspService(index_jsp.java:93) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

（1）JSP頁面中沒有加入類似下面內容：

<%@ taglib prefix="s" uri="/struts-tags"%>

（2）攔截器不是/*

  <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>