I've seen some people having this problem in earlier posts. In my local
machine everything works fine, however it have been throwing NPE in our
development server, I could not know why (the stack trace follows). I have
fixed it by changing the BuildClasspathUtil class. Here's a patch (against
2.0-b24 tag):
http://groups.google.com/group/gwt-maven/web/maven-gwt2-plugin.patch
Maven version: 2.0.9
Java version: 1.6.0_06
Plugin version: maven-googlewebtoolkit2-plugin-2.0-beta24.jar
I hope it helps. Please let known if there's some problem with this fix.
Cheers,
Célio
[INFO]
------------------------------------------------------------------------
[INFO] Building My Project
[INFO] task-segment: [clean, install]
[INFO]
------------------------------------------------------------------------
[INFO] [clean:clean]
[INFO] Deleting directory /path/to/target/dir
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [gwt:mergewebxml {execution: default}]
[INFO] copy source web.xml - /path/to/web.xml to build dir (source web.xml
required if mergewebxml execution is enabled)
[INFO] establishing classpath list (buildClaspathList - scope = COMPILE)
[INFO] google.webtoolkit.home (gwtHome) *not* set, using project POM for GWT
dependencies
java.lang.NullPointerException
at
org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:303)
at
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:200)
at
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:74)
at
com.totsp.mavenplugin.gwt.util.BuildClasspathUtil.injectGwtDepsFromRepo(BuildClasspathUtil.java:173)
at
com.totsp.mavenplugin.gwt.util.BuildClasspathUtil.buildClasspathList(BuildClasspathUtil.java:75)
at
com.totsp.mavenplugin.gwt.AbstractGWTMojo.fixThreadClasspath(AbstractGWTMojo.java:335)
at
com.totsp.mavenplugin.gwt.MergeWebXmlMojo.execute(MergeWebXmlMojo.java:85)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
at
hudson.maven.agent.PluginManagerInterceptor.executeMojo(PluginManagerInterceptor.java:159)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at
org.apache.maven.lifecycle.LifecycleExecutorInterceptor.execute(LifecycleExecutorInterceptor.java:42)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
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 hudson.maven.agent.Main.launch(Main.java:133)
at hudson.maven.MavenBuilder.call(MavenBuilder.java:139)
at
hudson.maven.MavenModuleSetBuild$Builder.call(MavenModuleSetBuild.java:543)
at
hudson.maven.MavenModuleSetBuild$Builder.call(MavenModuleSetBuild.java:489)
at hudson.remoting.UserRequest.perform(UserRequest.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:23)
at hudson.remoting.Request$2.run(Request.java:213)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
[HUDSON] Archiving /path/to/pom.xml to
/path/to/modules/groupId$artifactId/builds/2008-11-04_13-56-56/archive/groupId/artifactId/1.0-SNAPSHOT/pom.xml
[INFO]
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO]
------------------------------------------------------------------------
[INFO] Unable to merge web.xml
Embedded error: java.lang.NullPointerException
[INFO]
------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 47 seconds
[INFO] Finished at: Tue Nov 04 13:57:49 BRST 2008
[INFO] Final Memory: 61M/81M
[INFO]
------------------------------------------------------------------------
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Index: src/main/java/com/totsp/mavenplugin/gwt/util/BuildClasspathUtil.java
===================================================================
--- src/main/java/com/totsp/mavenplugin/gwt/util/BuildClasspathUtil.java (revision 895)
+++ src/main/java/com/totsp/mavenplugin/gwt/util/BuildClasspathUtil.java (working copy)
@@ -20,6 +20,8 @@
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Vector;
import java.util.Set;
import org.apache.maven.artifact.Artifact;
@@ -168,10 +170,12 @@
mojo.getGwtVersion(), "jar", null);
Artifact gwtDev = mojo.getArtifactFactory().createArtifactWithClassifier("com.google.gwt", "gwt-dev",
mojo.getGwtVersion(), "jar", ArtifactNameUtil.getPlatformName());
-
+
+ List remoteRepositories = mojo.getRemoteRepositories();
+
try {
- mojo.getResolver().resolve(gwtUser, null, mojo.getLocalRepository());
- mojo.getResolver().resolve(gwtDev, null, mojo.getLocalRepository());
+ mojo.getResolver().resolve(gwtUser, remoteRepositories, mojo.getLocalRepository());
+ mojo.getResolver().resolve(gwtDev, remoteRepositories, mojo.getLocalRepository());
items.add(gwtUser.getFile());
items.add(gwtDev.getFile());
} catch (ArtifactNotFoundException e) {
@@ -182,4 +186,4 @@
return items;
}
-}
\ No newline at end of file
+}
