Thanks for your help, but it mvn 2.2.1 doesn't work form either.
Output:
[INFO] [antlr:generate {execution: default}]
[INFO]
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO]
------------------------------------------------------------------------
[INFO] Unable to build grammar metadata
Embedded error: Error attempting to access grammars within grammar file
[INFO]
------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Unable to build
grammar metadata
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at
org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
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.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at
org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: Unable to build
grammar metadata
at
org.codehaus.mojo.antlr.metadata.MetadataExtracter.processMetadata(MetadataExtracter.java:165)
at
org.codehaus.mojo.antlr.AbstractAntlrMojo.executeAntlr(AbstractAntlrMojo.java:205)
at org.codehaus.mojo.antlr.AntlrPlugin.execute(AntlrPlugin.java:48)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
... 17 more
Caused by: org.apache.maven.plugin.MojoExecutionException: Error attempting
to access grammars within grammar file
at
org.codehaus.mojo.antlr.metadata.MetadataExtracter.intrepretMetadata(MetadataExtracter.java:211)
at
org.codehaus.mojo.antlr.metadata.MetadataExtracter.processMetadata(MetadataExtracter.java:160)
... 21 more
Caused by: org.apache.maven.plugin.MojoExecutionException: Error accessing
Antlr grammar metadata
at
org.codehaus.mojo.antlr.metadata.MetadataExtracter.intrepret(MetadataExtracter.java:274)
at
org.codehaus.mojo.antlr.metadata.MetadataExtracter.intrepretMetadata(MetadataExtracter.java:206)
... 22 more
Caused by: java.lang.NullPointerException
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.mojo.antlr.metadata.MetadataExtracter.intrepret(MetadataExtracter.java:242)
... 23 more
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