Maven 3 can resolve artifacts to the project.build.outputDirectory, causing an
IOException
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Key: MWEBSTART-166
URL: http://jira.codehaus.org/browse/MWEBSTART-166
Project: Maven 2.x Webstart Plugin
Issue Type: Bug
Affects Versions: 1.0-beta-1
Reporter: Ryan Stewart
I'm not sure if this plugin is intended to support Maven 3 or not, but if so,
it needs to account for the case in Maven 3 where a call to
ArtifactResolver.resolve() can return a build output directory in the current
project in the case of a multimodule build. With Maven 3.0.2, I'm getting this
exception when I try to run the jnlp-download-servlet goal without having run
at least the package phase (because if I run package, then the built JAR is
used as the artifact, but if not, it uses the build output directory):
[ERROR] Failed to execute goal
org.codehaus.mojo.webstart:webstart-maven-plugin:1.0-beta-1:jnlp-download-servlet
(default) on project foo: Unable to copy an artifact to the working directory:
<module directory>/target/classes (Is a directory) -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.codehaus.mojo.webstart:webstart-maven-plugin:1.0-beta-1:jnlp-download-servlet
(default) on project foo: Unable to copy an artifact to the working directory
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
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.buildProject(LifecycleModuleBuilder.java:84)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:534)
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:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: Unable to copy an
artifact to the working directory
at
org.codehaus.mojo.webstart.JnlpDownloadServletMojo.retrieveJarResources(JnlpDownloadServletMojo.java:454)
at
org.codehaus.mojo.webstart.JnlpDownloadServletMojo.execute(JnlpDownloadServletMojo.java:136)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more
Caused by: java.io.FileNotFoundException: <module dir>/target/classes (Is a
directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at org.codehaus.plexus.util.FileUtils.copyFile(FileUtils.java:950)
at
org.codehaus.mojo.webstart.AbstractBaseJnlpMojo.copyJarAsUnprocessedToDirectoryIfNecessary(AbstractBaseJnlpMojo.java:569)
at
org.codehaus.mojo.webstart.JnlpDownloadServletMojo.retrieveJarResources(JnlpDownloadServletMojo.java:423)
... 22 more
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