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Simplest App ever - problem

frank braunstein
Ranch Hand

Joined: Dec 17, 2009
Posts: 60
I programmed an extremly simple app.

A html-Form see here:



is supposed to "POST" the things (here its just "userName") inside the form to the "setAttrib"-servlet, which looks like this:



ok i know that it is neccessary to add a web.xml, thats why i wrote also a file like this:

and since my controller(servlet) forwards request and response it to a View i will post my generateHtml.jsp also:


Sorry for this long post, but i have been trying on this **** for about 3 hours and i cant figure any flaw out.

Thanks for every post that helps me.
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42292
    
  64
Which part doesn't work? Are you getting any error messages?


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frank braunstein
Ranch Hand

Joined: Dec 17, 2009
Posts: 60
When i try to start the webapp via the Tomcat-Application-Manager, it says "Failed to load application at /sampleApp".

Sorry forgot to post the deployment structure.

My deployment structure looks like this:

Tomcat
----webapps
--------sampleApp --> form.html, generateHtml.jsp
------------WEB-INF --> web.xml
----------------classes
--------------------com
------------------------altug
----------------------------web --> SetAttributeServlet.class


right at the moment iam like: "ok well, maybe i pray to god that things work". Im at my wits end.
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42292
    
  64
When i try to start the webapp via the Tomcat-Application-Manager, it says "Failed to load application at /sampleApp".

In that case there should be a more elaborate error message in the TOMCAT_HOME/logs/catalina.out file.
frank braunstein
Ranch Hand

Joined: Dec 17, 2009
Posts: 60
Ulf Dittmer wrote:
When i try to start the webapp via the Tomcat-Application-Manager, it says "Failed to load application at /sampleApp".

In that case there should be a more elaborate error message in the TOMCAT_HOME/logs/catalina.out file.

ok this is the latest catalina file, todays date:

19.12.2009 12:20:46 org.apache.catalina.startup.HostConfig checkResources
INFO: Reloading context [/sampleApp]
19.12.2009 12:20:46 org.apache.tomcat.util.digester.Digester endElement
SCHWERWIEGEND: End event threw exception
java.lang.reflect.InvocationTargetException
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.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:956)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:775)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1140)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1066)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1173)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1271)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:296)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2474)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2450)
... 33 more
19.12.2009 12:20:46 org.apache.catalina.startup.ContextConfig applicationWebConfig
SCHWERWIEGEND: Parse error in application web.xml file at jndi:/localhost/sampleApp/WEB-INF/web.xml
java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2808)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2834)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1143)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.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$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1066)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1173)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1271)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:296)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2474)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2450)
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.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:956)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:775)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1140)
... 25 more
19.12.2009 12:20:46 org.apache.catalina.startup.ContextConfig applicationWebConfig
SCHWERWIEGEND: Occurred at line 14 column 22
19.12.2009 12:20:46 org.apache.catalina.startup.ContextConfig start
SCHWERWIEGEND: Marking this application unavailable due to previous error(s)
19.12.2009 12:20:46 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error getConfigured
19.12.2009 12:20:46 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/sampleApp] startup failed due to previous errors
19.12.2009 12:21:20 org.apache.catalina.core.StandardContext start
INFO: Container org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/ch8] has already been started
19.12.2009 12:21:25 org.apache.tomcat.util.digester.Digester endElement
SCHWERWIEGEND: End event threw exception
java.lang.reflect.InvocationTargetException
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.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:956)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:775)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1140)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1066)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
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:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2474)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2450)
... 42 more
19.12.2009 12:21:25 org.apache.catalina.startup.ContextConfig applicationWebConfig
SCHWERWIEGEND: Parse error in application web.xml file at jndi:/localhost/sampleApp/WEB-INF/web.xml
java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2808)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2834)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1143)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1066)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
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:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2474)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2450)
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.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:956)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:775)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1140)
... 34 more
19.12.2009 12:21:25 org.apache.catalina.startup.ContextConfig applicationWebConfig
SCHWERWIEGEND: Occurred at line 14 column 22
19.12.2009 12:21:25 org.apache.catalina.startup.ContextConfig start
SCHWERWIEGEND: Marking this application unavailable due to previous error(s)
19.12.2009 12:21:25 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error getConfigured
19.12.2009 12:21:25 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/sampleApp] startup failed due to previous errors
19.12.2009 14:53:37 org.apache.tomcat.util.digester.Digester endElement
SCHWERWIEGEND: End event threw exception
java.lang.reflect.InvocationTargetException
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.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:956)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:775)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1140)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1066)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
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:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2474)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2450)
... 42 more
19.12.2009 14:53:37 org.apache.catalina.startup.ContextConfig applicationWebConfig
SCHWERWIEGEND: Parse error in application web.xml file at jndi:/localhost/sampleApp/WEB-INF/web.xml
java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2808)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2834)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1143)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1644)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:365)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1066)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:261)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4339)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1249)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
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:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> null in servlet mapping
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2474)
at org.apache.catalina.core.StandardContext.addServletMapping(StandardContext.java:2450)
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.tomcat.util.IntrospectionUtils.callMethodN(IntrospectionUtils.java:956)
at org.apache.catalina.startup.CallMethodMultiRule.end(WebRuleSet.java:775)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1140)
... 34 more
19.12.2009 14:53:37 org.apache.catalina.startup.ContextConfig applicationWebConfig
SCHWERWIEGEND: Occurred at line 14 column 22
19.12.2009 14:53:37 org.apache.catalina.startup.ContextConfig start
SCHWERWIEGEND: Marking this application unavailable due to previous error(s)
19.12.2009 14:53:37 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error getConfigured
19.12.2009 14:53:37 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/sampleApp] startup failed due to previous errors
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61437
    
  67

<url-pattern> not <url-mapping>


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Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61437
    
  67

You might also want to fix your JSP which has numerous problems:

1) Invalid HTML

2) Use of out-dated scriptlets in place of the Expression Language
frank braunstein
Ranch Hand

Joined: Dec 17, 2009
Posts: 60
Thank you Bear ....,

i advertantly chose scriplets, i know there are EL-expressions.

the mapping im going to edit. hope this will fix it.....

EDIT:

It did fix it. I cant describe the relief im experiencing right now. Thank for all replies.
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61437
    
  67

Welcome to the Ranch!
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
 
subject: Simplest App ever - problem