hudson插件加载失败解决方案.doc

hudson version : hudson-2.2.1.war.
env : window xp

I installed analysis-core, checkstyle and findbugs plugins, when I restarted tomcat, I got some issues is below:

Jun 13, 2012 9:56:07 AM org.apache.catalina.core.AprLifecycleListener init
INFO: Loaded APR based Apache Tomcat Native library 1.1.22.
Jun 13, 2012 9:56:07 AM org.apache.catalina.core.AprLifecycleListener init
INFO: APR capabilities: IPv6 [false], sendfile [true], accept filters [false], random [true].
Jun 13, 2012 9:56:08 AM org.apache.coyote.http11.Http11AprProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-1981
Jun 13, 2012 9:56:08 AM org.apache.coyote.ajp.AjpAprProtocol init
INFO: Initializing Coyote AJP/1.3 on ajp-8009
Jun 13, 2012 9:56:08 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 737 ms
Jun 13, 2012 9:56:08 AM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Jun 13, 2012 9:56:08 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.35
Jun 13, 2012 9:56:08 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor host-manager.xml
Jun 13, 2012 9:56:08 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor manager.xml
Jun 13, 2012 9:56:08 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive hudson-demo-0.0.1-SNAPSHOT.war
Jun 13, 2012 9:56:08 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive hudson.war
Jun 13, 2012 9:56:09 AM hudson.WebAppMain contextInitialized
INFO: Home directory: J:\work-space\ci\hudson\home
Jun 13, 2012 9:56:09 AM hudson.util.CharacterEncodingFilter init
INFO: CharacterEncodingFilter initialized. DISABLE_FILTER: false FORCE_ENCODING: false
Jun 13, 2012 9:56:09 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory docs
Jun 13, 2012 9:56:09 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory examples
Jun 13, 2012 9:56:09 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
Jun 13, 2012 9:56:09 AM org.apache.coyote.http11.Http11AprProtocol start
INFO: Starting Coyote HTTP/1.1 on http-1981
Jun 13, 2012 9:56:09 AM org.apache.coyote.ajp.AjpAprProtocol start
INFO: Starting Coyote AJP/1.3 on ajp-8009
Jun 13, 2012 9:56:09 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1790 ms
Jun 13, 2012 9:56:09 AM org.hudsonci.inject.internal.SmoothieContainerBootstrap bootstrap
INFO: Bootstrapping Smoothie
Jun 13, 2012 9:56:11 AM hudson.PluginManager createPluginStrategy
INFO: Plugin strategy: org.hudsonci.inject.internal.plugin.DelegatingPluginStrategy
Jun 13, 2012 9:56:11 AM hudson.model.Hudson$5 onAttained
INFO: Started initialization
Jun 13, 2012 9:56:11 AM hudson.model.Hudson$5 onAttained
INFO: Listed all plugins
Jun 13, 2012 9:56:12 AM hudson.model.Hudson$5 onTaskFailed
SEVERE: Failed Loading plugin analysis-core
hudson.util.IOException2: Failed to load plugin instance for: analysis-core
at org.hudsonci.inject.internal.plugin.SmoothiePluginStrategy.load(SmoothiePluginStrategy.java:193)
at org.hudsonci.inject.internal.plugin.DelegatingPluginStrategy.load(DelegatingPluginStrategy.java:72)
at hudson.PluginManager$2$1$1.run(PluginManager.java:297)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$4.runTask(Hudson.java:698)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
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:619)
Caused by: java.lang.LinkageError: loader (instance of org/hudsonci/inject/internal/plugin/PluginClassLoader): attempted duplicate class definition for name: "org/apache/xerces/parsers/SAXParser"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:122)
at org.aspectj.weaver.bcel.ExtensibleURLClassLoader.defineClass(ExtensibleURLClassLoader.java:63)
at org.aspectj.weaver.loadtime.WeavingURLClassLoader.defineClass(WeavingURLClassLoader.java:151)
at org.aspectj.weaver.bcel.ExtensibleURLClassLoader.defineClass(ExtensibleURLClassLoader.java:97)
at org.aspectj.weaver.bcel.ExtensibleURLClassLoader.findClass(ExtensibleURLClassLoader.java:52)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at hudson.ClassicPluginStrategy$DependencyClassLoader.findClass(ClassicPluginStrategy.java:426)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:300)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at org.xml.sax.helpers.NewInstance.newInstance(NewInstance.java:49)
at org.xml.sax.helpers.XMLReaderFactory.loadClass(XMLReaderFactory.java:187)
at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(XMLReaderFactory.java:150)
at org.aspectj.weaver.loadtime.definition.DocumentParser.getXMLReader(DocumentParser.java:167)
at org.aspectj.weaver.loadtime.definition.DocumentParser.saxParsing(DocumentParser.java:137)
at org.aspectj.weaver.loadtime.definition.DocumentParser.parse(DocumentParser.java:117)
at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.parseDefinitions(ClassLoaderWeavingAdaptor.java:258)
at org.aspectj.weaver.loadtime.DefaultWeavingContext.getDefinitions(DefaultWeavingContext.java:130)
at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:161)
at org.aspectj.weaver.loadtime.WeavingURLClassLoader.createAdaptor(WeavingURLClassLoader.java:171)
at org.aspectj.weaver.loadtime.WeavingURLClassLoader.defineClass(WeavingURLClassLoader.java:132)
at org.aspectj.weaver.bcel.ExtensibleURLClassLoader.defineClass(ExtensibleURLClassLoader.java:97)
at org.aspectj.weaver.bcel.ExtensibleURLClassLoader.findClass(ExtensibleURLClassLoader.java:52)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at org.hudsonci.inject.internal.plugin.SmoothiePluginStrategy.loadPluginClass(SmoothiePluginStrategy.java:217)
at org.hudsonci.inject.internal.plugin.SmoothiePluginStrategy.load(SmoothiePluginStrategy.java:188)
... 10 more
Jun 13, 2012 9:56:12 AM hudson.model.Hudson$5 onTaskFailed
SEVERE: Failed Loading plugin checkstyle
java.io.IOException: Dependency analysis-core (1.39) doesn't exist
at hudson.PluginWrapper.resolvePluginDependencies(PluginWrapper.java:443)
at hudson.PluginManager$2$1$1.run(PluginManager.java:296)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$4.runTask(Hudson.java:698)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
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:619)
Jun 13, 2012 9:56:12 AM hudson.model.Hudson$5 onTaskFailed
SEVERE: Failed Loading plugin findbugs
java.io.IOException: Dependency analysis-core (1.39) doesn't exist
at hudson.PluginWrapper.resolvePluginDependencies(PluginWrapper.java:443)
at hudson.PluginManager$2$1$1.run(PluginManager.java:296)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$4.runTask(Hudson.java:698)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
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:619)
Jun 13, 2012 9:56:14 AM hudson.model.Hudson$5 onAttained
INFO: Prepared all plugins
Jun 13, 2012 9:56:14 AM hudson.model.Hudson$5 onTaskFailed
SEVERE: Failed Initializing plugin analysis-core
java.lang.NullPointerException
at hudson.PluginManager$2$1$2.run(PluginManager.java:313)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$4.runTask(Hudson.java:698)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
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:619)
Jun 13, 2012 9:56:14 AM hudson.model.Hudson$5 onTaskFailed
SEVERE: Failed Initializing plugin checkstyle
java.lang.NullPointerException
at hudson.PluginManager$2$1$2.run(PluginManager.java:313)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$4.runTask(Hudson.java:698)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
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:619)
Jun 13, 2012 9:56:14 AM hudson.model.Hudson$5 onTaskFailed
SEVERE: Failed Initializing plugin findbugs
java.lang.NullPointerException
at hudson.PluginManager$2$1$2.run(PluginManager.java:313)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at hudson.model.Hudson$4.runTask(Hudson.java:698)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
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:619)
Jun 13, 2012 9:56:15 AM hudson.model.Hudson$5 onAttained
INFO: Started all plugins
Jun 13, 2012 9:56:15 AM hudson.model.Hudson$5 onAttained
INFO: Augmented all extensions
Jun 13, 2012 9:56:15 AM hudson.model.Hudson$5 onAttained
INFO: Loaded all jobs
Jun 13, 2012 9:56:15 AM hudson.model.Hudson$5 onAttained
INFO: Completed initialization
Jun 13, 2012 9:56:15 AM hudson.TcpSlaveAgentListener <init>
INFO: JNLP slave agent listener started on TCP port 2499
Jun 13, 2012 9:56:23 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.5 01/14/2011 12:36 PM'
Jun 13, 2012 9:56:24 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.5 01/14/2011 12:36 PM'
Jun 13, 2012 9:56:25 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.5 01/14/2011 12:36 PM'
Jun 13, 2012 9:56:25 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.5 01/14/2011 12:36 PM'
Jun 13, 2012 9:56:26 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.5 01/14/2011 12:36 PM'
Jun 13, 2012 9:56:26 AM org.hudsonci.rest.plugin.RestPlugin enable
INFO: API provider JAX-RS (Jersey) enabled
Jun 13, 2012 9:56:26 AM org.hudsonci.rest.plugin.RestPlugin enable
INFO: API provider Bayeux (CometD) enabled
Jun 13, 2012 9:56:26 AM org.hudsonci.events.ready.ReadyDetector run
INFO: Hudson is ready.

I found the caused by is:
java.lang.LinkageError:loader(instance of org/hudsonci/inject/internal/plugin/PluginClassLoader): attempted duplicate class definition for name: "org/apache/xerces/parsers/SAXParser"

It means there is not only one class that name is org/apache/xerces/parsers/SAXParser was loaded by the same PluginClassLoader.

Then, I goto the HUDSON_HOME directory, in my computer is J:\work-space\ci\hudson\home, and searched file by string “xerces”, as a result, I found five following records, look at figure:

So that’s why I got those errors, cuz each plugin has included a xercesImpl-2.x.x.jar file that contained same class “org/apache/xerces/parsers/SAXParser”, and led to Hudson load the same class more than one time.

Ok, now let me fix this issue quickly.

Step 1: shutdown the tomcat.
Step 2: cut the xercesImpl-2.x.x.jar file that in red circle is below go away, this file was installed by hudson automatically from internet when you were building your jobs.

Step 3: startup the tomcat, all of plugins were installed successfully, see the figure is below:

I also has a question that I still can not understand,
it is can run in Linux RedHat with no problem, but window is not.
Eventually, the solution is simple, but it took my a whole day to research.I hope it could help you guys.