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From "Jiri Peinlich (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MTOMCAT-168) Nullpointer exception in run mojo
Date Thu, 19 Jul 2012 09:27:34 GMT
Jiri Peinlich created MTOMCAT-168:
-------------------------------------

             Summary: Nullpointer exception in run mojo
                 Key: MTOMCAT-168
                 URL: https://issues.apache.org/jira/browse/MTOMCAT-168
             Project: Apache Tomcat Maven Plugin
          Issue Type: Bug
          Components: tomcat7
    Affects Versions: 2.0-beta-1
         Environment: windows mingw
            Reporter: Jiri Peinlich
            Assignee: Olivier Lamy (*$^¨%`£)


when using enpty aditionalClasspathDir tag in the the plugin settings and running the mvn
tomcat7:run mojo I got the following nullpointer exception.  I am currently learning how the
whole plugin works. I got the initial plugin configuration from here:
http://tomcat.apache.org/maven-plugin-2/run-mojo-features.html

I removed parts that are not applicable for my project but i kept the empty additionalClasspathDir
as in the example:
<additionalClasspathDirs>
                    <additionalClasspathDir></additionalClasspathDir>
</additionalClasspathDirs>

When removing this section i did not get the exception anymore

Null Pointer exception:
[ERROR] Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.0-
beta-1:run (default-cli) on project ITA: Execution default-cli of goal org.apach
e.tomcat.maven:tomcat7-maven-plugin:2.0-beta-1:run failed. NullPointerException
-> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal o
rg.apache.tomcat.maven:tomcat7-maven-plugin:2.0-beta-1:run (default-cli) on proj
ect ITA: Execution default-cli of goal org.apache.tomcat.maven:tomcat7-maven-plu
gin:2.0-beta-1:run 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.buildProje
ct(LifecycleModuleBuilder.java:84)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
ct(LifecycleModuleBuilder.java:59)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBu
ild(LifecycleStarter.java:183)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycl
eStarter.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:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
cher.java:290)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
a:230)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
uncher.java:409)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-c
li of goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.0-beta-1:run failed.
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:110)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:209)
        ... 19 more
Caused by: java.lang.NullPointerException
        at org.apache.tomcat.maven.plugin.tomcat7.run.RunMojo.createWebappLoader
(RunMojo.java:268)
        at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.createCont
ext(AbstractRunMojo.java:415)
        at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.startConta
iner(AbstractRunMojo.java:719)
        at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.execute(Ab
stractRunMojo.java:353)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:101)
        ... 20 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutio
nException

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