Hello,

I’m having trouble building Camel from source in IntelliJ. I followed the 
instructions on https://camel.apache.org/manual/latest/building.html
However, mvn idea:idea is throwing an exception:

Failed to execute goal 
org.apache.maven.plugins:maven-idea-plugin:2.3-atlassian-10:idea (default-cli) 
on project camel-parent: Execution default-cli of goal 
org.apache.maven.plugins:maven-idea-plugin:2.3-atlassian-10:idea failed.: 
NullPointerException

Caused by: java.lang.NullPointerException
    at org.apache.maven.plugin.idea.IdeaModuleMojo.getLibraryUrl 
(IdeaModuleMojo.java:1141)
    at org.apache.maven.plugin.idea.IdeaModuleMojo.rewriteDependencies 
(IdeaModuleMojo.java:531)
    at org.apache.maven.plugin.idea.IdeaModuleMojo.rewriteModule 
(IdeaModuleMojo.java:423)
    at org.apache.maven.plugin.idea.IdeaMojo.rewriteModule (IdeaMojo.java:236)
    at org.apache.maven.plugin.idea.IdeaMojo.execute (IdeaMojo.java:216)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:356)

It looks like the Maven IDEA plugin is no longer maintained.

I’m sure there must be other IntelliJ users building Camel. How are you 
handling this?

Best regards,

Robin

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