Tomcat not starting - eclipse

i always get the following error when trying to start Tomcat in eclipse (or also from the terminal with this specific war file)the build using ant is successful of course:
08.08.2011 08:21:02 org.apache.catalina.core.StandardContext loadOnStartup
SCHWERWIEGEND: Servlet threw load() exception
java.lang.ClassNotFoundException: dea.alo.aloWeb.spring.StxxDelegatingRequestProcessor
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at com.oroad.stxx.plugin.StxxPlugin.initRequestProcessorClass(StxxPlugin.java:153)
at com.oroad.stxx.plugin.StxxPlugin.init(StxxPlugin.java:102)
at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:1158)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:473)
at javax.servlet.GenericServlet.init(GenericServlet.java:160)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1216)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1135)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4957)
at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5284)
at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5279)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
It runs perfectly on a pc using linux and eclipse galileo, but not on my mac using eclipse indigo. the libraries are all in place..does anyone have an idea what the problem might be?

Looks like I syncyronisation problem I often have.
Refresh the Workspace
Project Build (most time not needed) - But make sure that there are no build errors
Then run the two tasks from the Servers/(tomcat) Context menu
Clean...
Clean Tomcat Working Directory
If this all does not help, then Remove the application from the Server, clean the Server and Deploy the application again to the server.

The class StxxDelegatingRequestProcessor is missing in your classpath -> "ClassNotFoundException: dea.alo.aloWeb.spring.StxxDelegatingRequestProcessor"
I think you copied the struts conf from a site but not the class :)

Related

IllegalArgument: javax.inject-Extension-Name when deploying webapp

I am getting the exception below when launching Tomcat 7.0.54 with my web app. This same webapp launches fine when running tomcat through Eclipse. I initially deployed as a war file, then as a exploded war. The exception is only seen when not running in Eclipse. I have tried it on multiple platforms.
I thought this could be a result of the javax.inject libs not being in the tomcat classpath when it is parsing through the manifest files, so I added the javax.inject.jar file to the tomcat lib directory... same deal. I actually cannot find in any file the argument value "javax-inject-Extension-Name".
Has anyone seen this, or have a suggestion?
Thanks.
SEVERE: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/rdf.service]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1083)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1880)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: javax.inject-Extension-Name
at java.util.jar.Attributes$Name.<init>(Attributes.java:464)
at java.util.jar.Attributes.getValue(Attributes.java:116)
at org.apache.catalina.util.ManifestResource.getRequiredExtensions(ManifestResource.java:185)
at org.apache.catalina.util.ManifestResource.processManifest(ManifestResource.java:154)
at org.apache.catalina.util.ManifestResource.<init>(ManifestResource.java:50)
at org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:196)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5289)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 10 more
The issue ended up being with a dependent jar that I had pulled off of github, and had built with maven. That pom file specified the option to addExtensions when building the jar with the maven jar plugin. One of the extensions was javax.inject... however, the maven jar plugin turns this into java_inject-Extension-Name, but leaves it as javax.inject in the Extensions-List... this disconnect is what caused the issue.
When running in eclipse, it must not be doing this same verification. Rebuilding the jar without the extensions in the Manifest.mf file fixed the issue.

java.lang.NoClassDefFoundError in eclipse and tomcat however WAR is working in standalone tomcat

I am trying to deploy maven generated war file into tomcat server in eclipse.. but I get java.lang.NoClassDefFoundError on a jar file. I verified multiple times, jar is in .war and corresponding class file is also available in jar.
I can copy the war from generated location in eclipse and deploy into webapps of tomcat (using the same server as installed server in eclipse) successfully.
I am not sure what else to check in configuration apart from deployment assembly (which has jar listed) and Java Build path ( jar is available in Maven Dependencies). I am using JRE --> Alternate JRE pointing to JDK 1.6
Complete ERROR LOG:
2012-05-24 16:43:09,379 [main] ERROR org.springframework.web.context.ContextLoader - Context initialization failed
java.lang.NoClassDefFoundError: Lcom/att/cso/uss/client/ws/CciClientImpl;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2291)
at java.lang.Class.getDeclaredFields(Class.java:1743)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:373)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:321)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:830)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:493)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassNotFoundException: com.att.cso.uss.client.ws.CciClientImpl
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1484)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
... 33 more
Please advise.
Using server instance is not same as deploying WAR in tomcat. The servers view integration of tomcat 'hot' deploys the source folder. I suggest you check you Java Build path settings because those are used when you 'deploy' the source project into the server in servers view. How are you creating the war? I am assuming you are using maven for it.. If you are using maven (I have personal dislike for it), it should be managing the dependencies for you. You might have to replicate settings of maven in java or may be use maven plugin for eclipse. [http://www.eclipse.org/m2e/]

NoClassDefFoundError when running Tomcat + Spring + Maven project (Eclipse)

What I get is:
java.lang.NoClassDefFoundError: com/mongodb/DB
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
at java.lang.Class.getDeclaredMethods(Class.java:1791)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:446)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:430)
at org.springframework.util.ReflectionUtils.getAllDeclaredMethods(ReflectionUtils.java:475)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:634)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:573)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1319)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:315)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:394)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:594)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:407)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:442)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:458)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:339)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:306)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4420)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4733)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
This class is inside maven jar (from M2 repository). I added Maven Dependencies to DeploymentAssembly (before I did it i got: java.lang.ClassNotFoundException: org.springframework.web.filter.CharacterEncodingFilter). I use m2e plugin and have my project configured as Maven project. My app is deployed to standard location /.metadata/.plugins/.../tmp0. Inside of WEB-INF/lib I have all necessary jars. Project compiles with no error. What could I do wrong?
One quasi-solution is to add necessary libraries to Tomcat lib directory but I don't want to do that. I want to force Tomcat to use project libraries.
I have had a similar issue when trying to run the mcv-ajax and mvc-basic samples, distributed with Spring 3 (both available at https://src.springframework.org/svn/spring-samples - need an SVN client to download them, something like TortoiseSVN).
I was getting this ClassNotFoundException in my Tomcat6 startup log.
SEVERE: Exception starting filter characterEncodingFilter java.lang.ClassNotFoundException: org.springframework.web.filter.CharacterEncodingFilter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:269)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4071)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4725)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Feb 17, 2012 10:36:18 AM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
Feb 17, 2012 10:36:18 AM org.apache.catalina.core.StandardContext start
SEVERE: Context [/mvc-basic] startup failed due to previous errors
I could run both Maven Clean and Maven Install goals, with no errors, and the project did not have any classpath errors.
I also installed the eclipse Maven Integration for WTP available under the Maven Integration for Eclipse Extras package, as instructed here, but still no luck...
The problem in my case, could be seen in the Markers tab in Eclipse, as a warning (yellow eclamation mark) with a description of Classpath Dependency validator Message
and an actual issue of classpath entry org.eclipse.maven2_classpath.container will not be exported or published. Runtime ClassNotFoundExceptions may result.
To solve this issue
right-click on the problem description, and selected quick fix.
Select Mark the associated raw classpath entry as a publish/export dependency
Click on Finish
Do a maven-clean and a maven-install
right click on project, select run on server. Select Tomcat server to run on, and you should see the initial page.
Conclusion
The steps described above, worked for me in making the project run successfully in my Eclispe Development Environment. Please give it a try to see if it will work for you.
An alternative solution which also seems to work, is
delete the project from eclipse, including all associated files in the workspace. (delete project directory from workspace as well)
Check the project out again from SVN into the workspace
Import new project in eclipse, but choose Maven\Existing Maven Project
Select the project from the disk and import.
Kind regards,
ta6hbe
It looks like You didn't install the m2eclipse WTP integration.
If so, than this may me the source of wrong deployment. When WTP integration is installed You shouldn't need to change anythong in the deployment descriptor - the plugin should configure Your project automatically. If not, try RMB -> Maven -> Update project configuration, but be sure to install the WTP integration first.

Problem running a GWT 2.4 App on Tomcat

I have a problem running my gwt2.4rc1 application in a tomcat. The problem occurs when I try to make a requestfactory call. Then I get the exception at the bottom.
When I run GWT in development mode everything works fine. The gwt-dev. jar is in the lib folder of my webapp. I am using maven for dependency management. Could there be a problem with my configuration? I already had the error with gwt2.4 beta. If there are any other information required to solve this problem I am glad to provide them.
Regards,
Arne
SEVERE: Unexpected error
com.google.web.bindery.requestfactory.server.UnexpectedException: Unexpected checked exception
at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.die(ServiceLayerDecorator.java:216)
at com.google.web.bindery.requestfactory.server.ServiceLayerCache.getOrCache(ServiceLayerCache.java:242)
at com.google.web.bindery.requestfactory.server.ServiceLayerCache.resolveRequestFactory(ServiceLayerCache.java:198)
at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:201)
at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:125)
at com.google.web.bindery.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:133)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:261)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:175)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)
at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:162)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:242)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:203)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:242)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Caused by: java.lang.NoClassDefFoundError: com/google/gwt/dev/util/StringKey
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2804)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1144)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1639)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1517)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.validateProxy(RequestFactoryInterfaceValidator.java:1594)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.validateEntityProxy(RequestFactoryInterfaceValidator.java:828)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.maybeCheckProxyType(RequestFactoryInterfaceValidator.java:1540)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.getDomainType(RequestFactoryInterfaceValidator.java:1374)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.createDomainMethod(RequestFactoryInterfaceValidator.java:1192)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.checkClientMethodInDomain(RequestFactoryInterfaceValidator.java:1079)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.validateRequestContext(RequestFactoryInterfaceValidator.java:909)
at com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.validateRequestFactory(RequestFactoryInterfaceValidator.java:964)
at com.google.web.bindery.requestfactory.server.ResolverServiceLayer.resolveRequestFactory(ResolverServiceLayer.java:187)
at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
at com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveRequestFactory(ServiceLayerDecorator.java:172)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at com.google.web.bindery.requestfactory.server.ServiceLayerCache.getOrCache(ServiceLayerCache.java:233)
... 32 more
Caused by: java.lang.ClassNotFoundException: com.google.gwt.dev.util.StringKey
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1672)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1517)
... 57 more
There's a fix for this on its way over from RC to trunk. In the mean time, remove gwt-servlet from your dependencies and use requestfactory-servlet.jar instead.
I've always understood gwt-dev.jar to be the compiler and other development tools. If you believe that, there should be no dependency on it from your own code, and there is no reason for it to be in the WEB-INF/lib folder of your war file.
I see from this question that at least one other contributer to SO feels the same way, but the belief doesn't appear to be universal.
I'll update this answer if I can find anything one way or the other in the GWT docs.
Update:
The closest thing I could find was Organize Projects which shows gwt-dev as a referenced library not present in WEB-INF/lib. I can't find anything official that says either that you can or can't deploy it to your web server. In an old book GWT In Action (Hanson, 2007), page 551 says
You should never deploy the gwt-user.jar and gwt-dev.jar files to your server,
because they will interfere with your server; these JAR files contain their own
Tomcat server code, which is used when you're testing in hosted mode.
This is clearly out of date, since hosted mode isn't called that anymore and uses an embedded Jetty server rather than Tomcat, but that's the basis for my belief.
Ok I made it working :)
I used the gwt version compiled from here:
http://code.google.com/p/google-web-toolkit/source/browse/#svn%2Freleases%2F2.4
I did put gwt-servlet.jar and requestfactory-servlet.jar as dependencies in my project. The problem in the other thread occured because I used my own group-id for the compiled jars, so these were not used by gin and the gwt-maven-plugin. No everything works fine :)
Thanks for the help though!!

Tomcat 7 Start up problem in Eclispse for maven project

I m getting this intermittent problem in eclipse, when i try to run a maven project in tomcat
Details are as follows :
Eclipse version : 3.6
Maven version : 2.2.1
Tomcat version : 7
Error log :
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1362)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1208)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3712)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4216)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
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:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Deleting and Recreating the server solves the problem, but still i would like to know why this error is created.
This error usually occurs when Spring misses a jar file on the classpath. The main reason for this is that Eclipse not always deploys a project correctly to its Tomcat server. Instead of deleting the server, you can also clean the server and redeploy the application.
Thanks for your reply. Well my problem was fixed by doing a mvn eclipse:clean eclipse:eclipse
I encountered the same error
I added my spring library in deployment assembly and build path of the project.
I think your server did not detect the library and restarting it made the server check for the build paths.