error in struts

This is my jsp

<%@ taglib uri="http://struts.apache.org/tags-bean"
prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html"
prefix="html" %>
<html>
<head>
<Title> Login </title>
</head>
<body>
<Center>
<html:form action="/messageLogin">
<bean:message key="firstName" /> :
<html:text property="firstName"/><br>
<bean:message key="lastName" /> :
<html:text property="lastName"/><br>
<bean:message key="emailID" /> :
<html:text property="emailID"/><br>
<html:submit>
Submit
</html:submit>
</html:form>
</center>
</body>
</html>

this is what i get when i type the following address
http://localhost:8080/test/message.jsp

Mar 6, 2007 12:49:43 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException: Module 'null' not found.
at org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:743)
at org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:723)
at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:742)
at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:417)
at org.apache.jsp.message_jsp._jspx_meth_html_005fform_005f0(message_jsp.java:102)
at org.apache.jsp.message_jsp._jspService(message_jsp.java:74)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:390)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:818)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:624)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Unknown Source)

are you using separate files for each module for your application???..if so...can you post your web.xml and struts congig files....

This error is most likely caused by one of the following:

You faled to speciffy <load-on-startup>2</load-on-startup> for the Struts ActionServlet in your web.xml file

You did specify the above, but the Struts ActionServlet didn't initialize properly because of an error. Check the log file entries for the time period when the Server first starts up to see if it initialized properly.

here is my struts-config.xml

<form-beans>
<form-bean
name="messageFormBean"
type="test.MessageFormBean"/>
</form-beans>

<action
path="/messageLogin"
type="test.MessageActionClass"
name="messageFormBean"
scope="request">
<forward name="success"
path="/WEB-INF/view/messageSuccess.jsp"/>
</action>

<message-resources parameter="TestMessageResources1"
null="true"/>

Here is my web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
<display-name>Struts Blank Application</display-name>


<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>


<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

</web-app>

here are the log files
1. localhost.2007-03-08.log

Mar 8, 2007 11:42:53 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Mar 8, 2007 11:42:53 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Mar 8, 2007 11:42:55 AM org.apache.catalina.core.ApplicationContext log
INFO: Marking servlet action as unavailable
Mar 8, 2007 11:42:55 AM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /test threw load() exception
javax.servlet.UnavailableException: Parsing error processing resource path jndi:/localhost/test/WEB-INF/struts-config.xml
at org.apache.struts.action.ActionServlet.handleConfigException(ActionServlet.java:774)
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:749)
at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:686)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:353)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4044)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:451)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Mar 8, 2007 11:43:10 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException: Module 'null' not found.
at org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:743)
at org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:723)
at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:742)
at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:417)
at org.apache.jsp.message_jsp._jspx_meth_html_005fform_005f0(message_jsp.java:102)
at org.apache.jsp.message_jsp._jspService(message_jsp.java:74)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:390)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:818)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:624)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Unknown Source)
Mar 8, 2007 11:43:32 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
Mar 8, 2007 11:43:32 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()

2.catalina.2007-03-08.log

Mar 8, 2007 11:42:52 AM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: E:\dhamu\kicha\Tomcat6.0\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\QuickTime\QTSystem\
Mar 8, 2007 11:42:52 AM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Mar 8, 2007 11:42:52 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 687 ms
Mar 8, 2007 11:42:52 AM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Mar 8, 2007 11:42:52 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.2
Mar 8, 2007 11:42:52 AM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
Mar 8, 2007 11:42:52 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive struts-blank.war
Mar 8, 2007 11:42:52 AM org.apache.struts.action.ActionServlet initChain
INFO: Loading chain catalog from jar:file:/E:/dhamu/kicha/Tomcat6.0/webapps/struts-blank/WEB-INF/lib/struts-core-1.3.5.jar!/org/apache/struts/chain/chain-config.xml
Mar 8, 2007 11:42:53 AM org.apache.struts.validator.ValidatorPlugIn initResources
INFO: Loading validation rules file from '/org/apache/struts/validator/validator-rules.xml'
Mar 8, 2007 11:42:53 AM org.apache.struts.validator.ValidatorPlugIn initResources
INFO: Loading validation rules file from '/WEB-INF/validation.xml'
Mar 8, 2007 11:42:55 AM org.apache.struts.action.ActionServlet initChain
INFO: Loading chain catalog from jar:file:/E:/dhamu/kicha/Tomcat6.0/webapps/test/WEB-INF/lib/struts-core-1.3.5.jar!/org/apache/struts/chain/chain-config.xml
Mar 8, 2007 11:42:55 AM org.apache.commons.digester.Digester fatalError
SEVERE: Parse Fatal Error at line 2 column 6: The processing instruction target matching "[xX][mM][lL]" is not allowed.
org.xml.sax.SAXParseException: The processing instruction target matching "[xX][mM][lL]" is not allowed.at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPIData(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanPIData(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPI(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1572)
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:745)
at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:686)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:353)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4044)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:451)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Mar 8, 2007 11:42:55 AM org.apache.struts.util.PropertyMessageResources loadLocale
WARNING: Resource org/apache/struts/action/ActionResources_en_US.properties Not Found.
Mar 8, 2007 11:42:55 AM org.apache.struts.util.PropertyMessageResources loadLocale
WARNING: Resource org/apache/struts/action/ActionResources_en.properties Not Found.
Mar 8, 2007 11:42:55 AM org.apache.struts.action.ActionServlet handleConfigException
SEVERE: Parsing error processing resource path jndi:/localhost/test/WEB-INF/struts-config.xml
org.xml.sax.SAXParseException: The processing instruction target matching "[xX][mM][lL]" is not allowed.
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1572)
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:745)
at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:686)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:353)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4044)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:451)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Mar 8, 2007 11:42:55 AM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Mar 8, 2007 11:42:55 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Mar 8, 2007 11:42:55 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/125 config=null
Mar 8, 2007 11:42:55 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 3516 ms
Mar 8, 2007 11:43:30 AM org.apache.coyote.http11.Http11Protocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
Mar 8, 2007 11:43:32 AM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
Mar 8, 2007 11:43:32 AM org.apache.coyote.http11.Http11Protocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8080
Mar 8, 2007 11:43:32 AM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: Failed shutdown of Apache Portable Runtime

If you look closely at the stack trace, it's telling you very specifically what's wrong: Struts can't parse the XML in your struts-config.xml file

Is what you posted the entire contents of your struts-config.xml file? If so, it's pretty clear why Struts can't parse it: It doesn't follow the format required by the DTD.

It's really better if you don't try to build your struts-config.xml file from scratch. I'd recommend starting from the template provided in the struts-blank.war file that comes with the Struts download.

Here's what I recommend:

Rename your current struts-config.xml file to some other name

Find the struts-blank.war file that came with the download

Unzip the file into a directory on your disk somewhere

Copy the sample struts-config.xml file in the WEB-INF directory to the same directory in your application

Copy and paste the <form-beans> and <action> stanzas from your old renamed file into the new struts-config.xml file and delete the sample ones that are already there

There's one problem you need to make sure gets corrected in the new version of the config file: All <action> stanzas must be enclosed in a single <action-mappings> stanza

Redeploy the application and retest

[ March 08, 2007: Message edited by: Merrill Higginson ]

what about Action servlet. Is it one of the reasons that error has occured.
Because I could see everything goes fine until the action servlet is encountered, in the log file. for your information, in the log file
localhost.2007-03-08.log, we can see this piece of errror message,

INFO: Marking servlet action as unavailable
Mar 8, 2007 11:42:55 AM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /test threw load() exception

and in catalina.2007-03-08.log ,

Mar 8, 2007 11:42:55 AM org.apache.struts.action.ActionServlet initChain
INFO: Loading chain catalog from jar:file:/E:/dhamu/kicha/Tomcat6.0/webapps/test/WEB-INF/lib/struts-core-1.3.5.jar!/org/apache/struts/chain/chain-config.xml
Mar 8, 2007 11:42:55 AM org.apache.commons.digester.Digester fatalError
SEVERE: Parse Fatal Error at line 2 column 6: The processing instruction target matching "[xX][mM][lL]" is not allowed

so does Action servlet had something to do with the error?

The reason the ActionServlet is unavailable is that it didn't initialize properly when the server started up. In order to become active, the ActionServlet must perform its initialization logic, part of which is to read and parse the struts-config.xml file. The following part of the stack trace tells you very specifically that the ActionServlet was trying to perform it's init method, but ran into an error when it tried to parse the struts-config.xml file.