From: m2e-users-bounces@xxxxxxxxxxx [mailto:m2e-users-bounces@xxxxxxxxxxx] On Behalf Of Fred Bricon
Sent: lunes, 30 de mayo de 2011 12:19
To: Maven Integration for Eclipse users mailing list
Subject: Re: [m2e-users] Null pointer when importing a maven project
Looks like, since this is an unconventional package, the maven-compiler-plugin is not bound to the maven lifecycle.
The java configurator is trying to infer the java version from the maven-compiler-plugin configuration, but fails. You can try adding
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
</plugin>
in your <plugins> node. I'm not sure it'll work. In any case, you should open an issue at https://bugs.eclipse.org/bugs/enter_bug.cgi?product=m2e
Regards,
Fred Bricon
2011/5/30 Xavi Beumala <xbeumala@xxxxxxxxx>
Hi all,
I have a very simple project (basically it's a folder with the pom.xml and a src/main/resources empty folder), see pom file below.
When importing it In Eclipse as an existing maven project I get an exception (copied below). The problem is that after the exception the project is imported but it's only half configured (i.e. the classpath is wrong).
Any hint on what might be going on?
Many thanks
Xavi
//-------------
// pom.xml
//-------------
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>test</groupId>
<artifactId>TestProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>New Test Project</name>
<packaging>content-package</packaging>
<build>
<plugins>
<plugin>
<groupId>com.day.jcr.vault</groupId>
<artifactId>maven-vault-plugin</artifactId>
<version>0.0.7</version>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
</project>
//-------------------------
// RTE
//-------------------------
An internal error occurred during: "Importing Maven projects".
java.lang.NullPointerException
at org.apache.maven.plugin.DefaultPluginDescriptorCache$CacheKey.<init>(DefaultPluginDescriptorCache.java:164)
at org.apache.maven.plugin.DefaultPluginDescriptorCache.createKey(DefaultPluginDescriptorCache.java:62)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:130)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getMojoDescriptor(DefaultMavenPluginManager.java:251)
at org.apache.maven.plugin.DefaultBuildPluginManager.getMojoDescriptor(DefaultBuildPluginManager.java:197)
at org.maven.ide.eclipse.internal.embedder.MavenImpl.getMojoParameterValue(MavenImpl.java:765)
at org.maven.ide.eclipse.jdt.internal.AbstractJavaProjectConfigurator.getCompilerLevel(AbstractJavaProjectConfigurator.java:399)
at org.maven.ide.eclipse.jdt.internal.AbstractJavaProjectConfigurator.addJavaProjectOptions(AbstractJavaProjectConfigurator.java:370)
at org.maven.ide.eclipse.jdt.internal.AbstractJavaProjectConfigurator.configure(AbstractJavaProjectConfigurator.java:95)
at org.maven.ide.eclipse.project.configurator.AbstractLifecycleMapping.configure(AbstractLifecycleMapping.java:57)
at org.maven.ide.eclipse.internal.project.GenericLifecycleMapping.configure(GenericLifecycleMapping.java:48)
at org.maven.ide.eclipse.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:306)
at org.maven.ide.eclipse.internal.project.ProjectConfigurationManager.configureNewMavenProject(ProjectConfigurationManager.java:240)
at org.maven.ide.eclipse.internal.project.ProjectConfigurationManager.importProjects(ProjectConfigurationManager.java:146)
at org.maven.ide.eclipse.wizards.MavenImportWizard$1.runInWorkspace(MavenImportWizard.java:94)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
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