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unknown error while running Struts2 application

 
Greenhorn
Posts: 22
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Hi Guys!!!

I know struts 1.3 but new in struts2 so i am trying to run an simple hello world application in struts2 using eclipse but it gives me an some unKnown error:


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:502)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
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:44)
org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:48)
org.apache.jsp.index_jsp._jspx_meth_s_005fform_005f0(index_jsp.java:105)
org.apache.jsp.index_jsp._jspService(index_jsp.java:75)
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:388)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.33 logs.


--------------------------------------------------------------------------------

Apache Tomcat/6.0.33


Pl reffered the application files as given below:
this is a Login class which acts like an controller

package pck;

import com.opensymphony.xwork2.ActionSupport;
public class Login extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 1L;
String userName;
String userPswd ;
String message ;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPswd() {
return userPswd;
}
public void setUserPswd(String userPswd) {
this.userPswd = userPswd;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}

public String execute(){
return "SUCCESS" ;
}
}

this is login.jsp page
<%--
Document : index
Created on : Feb 28, 2009, 9:45:01 AM
Author : Meyyappan Muthuraman
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<s:head />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login Page</title>
</head>
<body>
<center><s:form action="Login">
<pre> <s:textfield name="userName" label="User Name" />
<s:password name="userPswd" label="Password" />
<s:submit value="Login" />
</pre>
</s:form></center>
</body>
</html>

this is a success.jsp
<%--
Document : result
Created on : Feb 28, 2009, 9:46:46 AM
Author : Meyyappan Muthuraman
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="/struts-tags" prefix="s" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login Page</title>
</head>
<body>
<h1>Your login is successFull</h1>
</body>
</html>

this is struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<struts>
<package name="default" extends="struts-default" namespace="/">
<action name="Login" class="pck.Login">
<result name="input">login.jsp</result>
<result name="success">success.jsp</result>
</action>
</package>
</struts>


this is web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>Struts2</display-name>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
<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>

</web-app>



If you want some other files or libraries pl reffered to the attachment

Regards:-
Ishant Agarwal
Software Engineer
Buongiorno Digital Innovation
 
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Posts: 256
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