[CXF-5287] NPE at org.apache.cxf.maven_plugin.ClassLoaderSwitcher.restoreClassLoader

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.7.6
• Fix Version/s: 2.7.8, 2.6.11
• Component/s: Tooling
• Labels: patch
• Estimated Complexity: Unknown
• Assignee: Daniel Kulp
• Reporter: Nikolay Martynov
• Created: 18/Sep/13 07:53
• Updated: 26/Nov/13 17:40
• Resolved: 26/Sep/13 21:10

Description

Maven plugin throws exception when running build.

Failed to execute goal org.apache.cxf:cxf-java2ws-plugin:2.7.6:java2ws (Generate UtafService.wsdl) on project temip-ca-alarms-from-temip-utaf-bc: Execution Generate UtafService.wsdl of goal org.apache.cxf:cxf-java2ws-plugin:2.7.6:java2ws failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.cxf:cxf-java2ws-plugin:2.7.6:java2ws (Generate UtafService.wsdl) on project temip-ca-alarms-from-temip-utaf-bc: Execution Generate UtafService.wsdl of goal org.apache.cxf:cxf-java2ws-plugin:2.7.6:java2ws failed.
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
	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.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution Generate UtafService.wsdl of goal org.apache.cxf:cxf-java2ws-plugin:2.7.6:java2ws failed.
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
	... 19 more
Caused by: java.lang.NullPointerException
	at org.apache.cxf.maven_plugin.ClassLoaderSwitcher.restoreClassLoader(ClassLoaderSwitcher.java:120)
	at org.apache.cxf.maven_plugin.Java2WSMojo.execute(Java2WSMojo.java:233)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
	... 20 more

According to source it fails when it tries to restore system properties. This can only happen when switchClassLoader() was never called.

Issue Links

• is related to: CXF-5020 add NPE guard when we restore original java.class.path system property