hello.jsp error 500 urgent help

**mburnwal** · 03-23-2011, 07:20 AM

Can anyone suggest me what is going in wrong?? with error as:
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: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handle JspException(JspServletWrapper.java:536)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:368)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.struts2.dispatcher.FilterDispatcher.doF ilter(FilterDispatcher.java:389)

root cause

java.lang.NullPointerException
org.apache.jsp.test_jsp._jspInit(test_jsp.java:22)
org.apache.jasper.runtime.HttpJspBase.init(HttpJsp Base.java:52)
org.apache.jasper.servlet.JspServletWrapper.getSer vlet(JspServletWrapper.java:164)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:338)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.struts2.dispatcher.FilterDispatcher.doF ilter(FilterDispatcher.java:389)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs.
Apache Tomcat/6.0.32

**dswastik** · 03-23-2011, 07:49 AM

Your page name is hello.jsp. But as per the exception stack trace, the exception is most likely getting generated in test.jsp.

root cause

java.lang.NullPointerException
org.apache.jsp.test_jsp._jspInit(test_jsp.java:22)

**mburnwal** · 03-23-2011, 08:07 AM

sorry, its test.jsp only... i m giving correct in that.

**dswastik** · 03-23-2011, 08:11 AM

Your code does not seem to have any such thing, which is likely to generate a nullpointerexception. It seems to be some configuration problem. If you have tomcat just try to test this page, without using that framework, and see if it works.

**mburnwal** · 03-23-2011, 08:21 AM

ok i ll try it now n post result...

**mburnwal** · 03-23-2011, 11:59 AM

i got it resolved whole issues,

solution::

i deleted existing project.
look and update through classpath etc.
made new project freshly.

Now i am getting only one error::
<%@ taglib prefix="ww" uri="webwork" %>

cannot resolve uri with taglib in jsp file

and taglib not allowed here in:: web.xml
<taglib>
<taglib-uri>webwork</taglib-uri>
<taglib-location>/WEB-INF/lib/webwork-2.2.7.jar
</taglib-location>
</taglib>

Please help me if anyone knows.... it will be gr8 help... :-)

**dswastik** · 03-23-2011, 12:05 PM

it probably goes under <jsp-config>

**mburnwal** · 03-24-2011, 04:00 AM

Hi ,

Please tell me clearly what i should do in order to resolve the tags issues!!!
Now i am getting only one error::
<%@ taglib prefix="ww" uri="webwork" %>

cannot resolve uri with taglib in jsp file

and taglib not allowed here in:: web.xml
<taglib>
<taglib-uri>webwork</taglib-uri>
<taglib-location>/WEB-INF/lib/webwork-2.2.7.jar
</taglib-location>
</taglib>

Please help me if anyone knows.... it will be gr8 help... :-)
Add to mburnwal's Reputation
I am beginner, so kindly elaborate...
thanks

**mburnwal** · 03-24-2011, 04:45 AM

RESOLVED Previous issues

Only 2 problems are now is that "unexpected end of file" near HTML closing tag and "Cannot resolve helloWorld.action".
I doubt is my file corrupt?? my jsp file is ::

<%@ taglib prefix="ww" uri="/webwork" %>
<html>
<head>
<title>Enter your name</title>
</head>
<body>
<ww:if test="message != null">
<%--<ww:fontColors="red">--%>
<ww:property value="message"/>
<%--</ww:fontColors>--%>
</ww:if>
Please enter your name:
<form action="helloWorld.action">
<input type="text" name="name" value="<ww:property value= 'name'>" >
</form>

</body>
</html>[/B]

Please Help me..

**mburnwal** · 03-24-2011, 05:25 AM

Just look through below errors.. Solved previous ones...

**mburnwal** · 03-25-2011, 10:13 AM

import com.symphony.xwork.ActionSupport;

using execute() method and variable SUCCESS of ActionSupport class in code. HelloWorld.java

in java file there is error like ActionSupport class file could not be found, Success variable cannot resolve etc. Means it is not able to find the clas file ActionSupport inside jar directory xwork.jar.

But i kept it inside myproject/lib as well as inside web/WEB-INF/lib. I am using IntellijIDEA. Moreover i checked my classpath is set proper.

Plz help me. I am struggling with this code since a week nearly.... :-(
:eek::eek::eek::eek:

**mburnwal** · 03-25-2011, 10:15 AM

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: An exception occurred processing JSP page /hello.jsp at line 16

13: </head>
14: <body>
15: WebWork says:
16: <h1><ww:property value="message"/></h1>
17: </body>
18: </html>
19:

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handle JspException(JspServletWrapper.java:519)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:410)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.struts2.dispatcher.FilterDispatcher.doF ilter(FilterDispatcher.java:389)

root cause

javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class com.opensymphony.xwork.util.OgnlValueStack
org.apache.jasper.runtime.PageContextImpl.doHandle PageException(PageContextImpl.java:865)
org.apache.jasper.runtime.PageContextImpl.handlePa geException(PageContextImpl.java:794)
org.apache.jsp.hello_jsp._jspService(hello_jsp.jav a:78)
org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:386)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.struts2.dispatcher.FilterDispatcher.doF ilter(FilterDispatcher.java:389)

root cause

java.lang.NoClassDefFoundError: Could not initialize class com.opensymphony.xwork.util.OgnlValueStack
com.opensymphony.webwork.views.jsp.TagUtils.getSta ck(TagUtils.java:36)
com.opensymphony.webwork.views.jsp.WebWorkTagSuppo rt.getStack(WebWorkTagSupport.java:46)
com.opensymphony.webwork.views.jsp.PropertyTag.doS tartTag(PropertyTag.java:55)
org.apache.jsp.hello_jsp._jspx_meth_ww_005fpropert y_005f0(hello_jsp.java:95)
org.apache.jsp.hello_jsp._jspService(hello_jsp.jav a:67)
org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:386)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
org.apache.struts2.dispatcher.FilterDispatcher.doF ilter(FilterDispatcher.java:389)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs.
Apache Tomcat/6.0.32

I AM MAKING HELLOWORLD PROGRAM IN WEBWORK. I TOOK THE REFERNCE FROM WEBWORK IN ACTION E-BOOK.
PLZ HELP!!

**mburnwal** · 03-25-2011, 10:18 AM

Hi, will u plz look through my last 2 posts abt stack trace n package could not foud. I ll b gr8 help!!! I solved all previous ones... Go thru just last two post .....

**mburnwal** · 03-28-2011, 09:24 AM

All exceptions resolved by adding missing classes from stacktrace to lib folder.

Now i just could not connect/mapped action file to jsp file through configuration file xwork.xml, web.xml etc.

My HelloWorld.java file is :

package sample;

import com.opensymphony.xwork.ActionSupport;

public class HelloWorld extends ActionSupport {
private String message;

@Override
public String execute() {
message = "Hello, WebWorld!";
return SUCCESS;
}

public String getMessage() {
return message;
}
public void setMessage(String message)
{
this.message = message;
}
}

hello.jsp file is

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="ww" uri="/webwork" %>
<html>
<head>
<title>Hello Page</title>
</head>
<body>
WebWork says:
<h1><ww:property value="message"/></h1>
</body>
</html>

xwork.xml

<!DOCTYPE xwork PUBLIC "-//OpenSymphony Group//XWork 1.0//EN"
"http://www.opensymphony.com/xwork/xwork-1.0.dtd">
<xwork>
<include file="webwork-default.xml"/>
<package name="default" namespace="/" extends="webwork-default">
<default-interceptor-ref name="completeStack"/>

<action name="helloWorld" class="sample.HelloWorld">
<result name="success" type="dispatcher">hello.jsp</result>

</action>

</package>
</xwork>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
version="2.5">
<servlet>
<servlet-name>webwork</servlet-name>
<servlet-class>
com.opensymphony.webwork.dispatcher.ServletDispatc her
</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>webwork</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
<jsp-config>
<taglib>
<taglib-uri>webwork</taglib-uri>
<taglib-location>/WEB-INF/lib/webwork-2.2.7.jar
</taglib-location>
</taglib>
</jsp-config>

<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatch er</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>

webwork.properties
webwork.tag.altSyntax = true

I placed xwork.xml,webwork.properties and package sample inside WEB-INF/classes

and jsp file inside WEB-INF..

After compiling java file and running hello.jsp file, i gets only Webwork says. It does not fetch message and displays it on browser meaning mapping is not tking place ... please help me and tell me possible reasons for this problem....

**r035198x** · 03-28-2011, 09:33 AM

Do not put your jsps inside the WEB-INF folder. Basically it looks like you are not following the instructions given for that tutorial.

**mburnwal** · 03-28-2011, 09:42 AM

plz help with good explanationss

**mburnwal** · 03-28-2011, 09:48 AM

Inside tutorials its saying save it inside

Save this file in the root of your Web application

but i am using IntellijIDEA for this... There is no Root folder... plz elaborate where to keep??
My directory structure is::

project1
>>>lib
>>>out
>>>src
////////// inside this HelloWorld.java file is there.
>>>web
>>>>>WEB-INF
>>>>>>>classes
>>>>>>>>>Sample
>>>>>>>>>>>>HelloWorld.class
>>>>>>>>>xwork.xml
>>>>>>>>>webwork.properties
>>>>>>web.xml
>>>>>>lib
>>>>>>hello.jsp
>>>>>>index.jsp
>>>External libraries.

**r035198x** · 03-28-2011, 09:59 AM

Don't use IntellijIDEA (yet).
Follow all the steps given in that tutorial using only the tools that the tutorial tells you to use. Deploy their examples and make sure they work. Then play with their examples making small modifications at at time and see that everything works.

**mburnwal** · 03-28-2011, 10:05 AM

I need to make it in that IDEA only.. I am new to this.. plz atleast give a try... i am trying since 1-2 weeks.. solved many exceptions, errors:eek: etc.. now last stage... plz help me......:cool::rolleyes:

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ActionSupport class could not be found in java action file

stack trace of my jsp file is.

where to place jsp then?

Cant u help me with intellij IDEA.??

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