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Maven-Tomcat-Plugin using configured web.xml errors with FileNotFound after a clean

Answer 1

+1 A:

I could reproduce this bug. Not sure why but in the following method of AbstractRunMojo.java:

private void copyFile( String fromPath, File toFile )
    throws IOException
{

    URL fromURL = getClass().getResource( fromPath );

    if ( fromURL == null )
    {
        throw new FileNotFoundException( fromPath );
    }

    FileUtils.copyURLToFile( fromURL, toFile );
}

The call to getClass().getResource( fromPath ) indeed returns a null URL right after a clean and works during subsequent invocations. I didn't really dig the issue but this seems to be a classloading issue (maybe related to MTOMCAT-25).

It's pretty annoying but the workaround is obviously to run the goal a second time after the first failure.

EDIT: I've reported this problem, see MTOMCAT-42, which has been fixed and a new snapshot of the Maven Tomcat Plugin has been published! To use it, add the following snippet to your pom.xml:

  <pluginRepositories>
    <pluginRepository>
      <id>Codehaus Snapshots</id>
      <url>http://snapshots.repository.codehaus.org/&lt;/url&gt;
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
      <releases>
        <enabled>true</enabled>  <!-- Workaround for MNG-2974, see note below -->
      </releases>
    </pluginRepository>
  </pluginRepositories>

Then change the version of the plugin to 1.0-SNAPSHOT and try again.

Pascal Thivent 2009-12-18 22:31:59

Thanks for reproducing this, Pascal.

Justin Searls 2009-12-19 06:19:49

Thanks Pascal, that's awesome!

Justin Searls 2010-01-06 13:49:20

Actually, after following your directions, I'm still failing to pull down the snapshot. Opened this question: http://stackoverflow.com/questions/2013576/maven-is-failing-to-download-the-tomcat-maven-plugin-snapshot

Justin Searls 2010-01-06 14:36:41

That's odd, I did a verification before to post the update and guarantee the issue was fixed (but maybe I built the plugin myself locally). I'll go check the new question.

Pascal Thivent 2010-01-06 14:59:23

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Maven-Tomcat-Plugin using configured web.xml errors with FileNotFound after a clean

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