How did you install your plugin? Did you build locally or downloaded from remote repository?
Look at maven-metadata-local.xml or maven-metadata-<repo>.xml file under M2_REPO/com/mycompany/maven/plugins directory, <repo> is the repository name from where the plugin was installed. You should see someting like <?xml version="1.0" encoding="UTF-8"?><metadata> <plugins> <plugin> <name>your plugin name</name> <prefix>prefix</prefix> <artifactId>your plugin artifactid</artifactId> </plugin> </metadata> If you do not see anything means the plugin did not specify prefix properly. Look at http://books.sonatype.com/maven-book/reference/writing-plugins-sect-plugin-prefix.html specifically example 17.6 which uses maven-plugin-plugin to declare prefix notation. 苏林冲 wrote: > > Hi, all > I have set below in setting.xml > <pluginGroups> > <pluginGroup>com.mycompany.maven.plugins</pluginGroup> > </pluginGroups> > > when i run myplugin:exec , maven print these in the console > > [INFO] Scanning for projects... > [INFO] Searching repository for plugin with prefix: 'myplugin'. > [INFO] > ------------------------------------------------------------------------ > [ERROR] BUILD ERROR > [INFO] > ------------------------------------------------------------------------ > [INFO] The plugin 'org.apache.maven.plugins:maven-myplugin-plugin' does > not > exist or no valid version could be found > [INFO] > ------------------------------------------------------------------------ > [INFO] For more information, run Maven with the -e switch > [INFO] > ------------------------------------------------------------------------ > [INFO] Total time: < 1 second > [INFO] Finished at: Fri Nov 21 13:05:34 CST 2008 > [INFO] Final Memory: 1M/2M > [INFO] > ------------------------------------------------------------------------ > > why does maven define the groupId "org.apache.maven.plugins" rather than " > com.mycompany.maven.plugins"? > > And below is also the log infomation with -X > > > + Error stacktraces are turned on. > Maven version: 2.0.9 > Java version: 1.5.0_16 > OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows" > [DEBUG] Building Maven user-level plugin registry from: 'C:\Documents and > Settings\sulinchong.pt\.m2\plugin-registry.xml' > [DEBUG] Building Maven global-level plugin registry from: 'D:\Program > Files\apache-maven-2.0.9\conf\plugin-registry.xml' > [INFO] Scanning for projects... > [INFO] Searching repository for plugin with prefix: 'myplugin'. > [DEBUG] Loading plugin prefixes from group: com.taobao.maven.plugins > -----> does > it work? > [DEBUG] Loading plugin prefixes from group: org.apache.maven.plugins > [DEBUG] Loading plugin prefixes from group: org.codehaus.mojo > [DEBUG] maven-myplugin-plugin: using locally installed snapshot > [DEBUG] Artifact not found - using stub model: Unable to determine the > latest version > > org.apache.maven.plugins:maven-myplugin-plugin:pom:LATEST > > > [DEBUG] Using defaults for missing POM > org.apache.maven.plugins:maven-myplugin-plugin:pom:LATEST > [DEBUG] maven-myplugin-plugin: using locally installed snapshot > [DEBUG] Artifact not found - using stub model: Unable to determine the > release version > > org.apache.maven.plugins:maven-myplugin-plugin:pom:RELEASE > > > [DEBUG] Using defaults for missing POM > org.apache.maven.plugins:maven-myplugin-plugin:pom:RELEASE > [INFO] > ------------------------------------------------------------------------ > [ERROR] BUILD ERROR > [INFO] > ------------------------------------------------------------------------ > [INFO] The plugin 'org.apache.maven.plugins:maven-myplugin-plugin' does > not > exist or no valid version could be found > [INFO] > ------------------------------------------------------------------------ > [DEBUG] Trace > org.apache.maven.lifecycle.LifecycleExecutionException: The plugin > 'org.apache.maven.plugins:maven-myplugin-plugin' does not exist or no > valid > version could be found > at > org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1303) > at > org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1542) > at > org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:405) > at > org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:137) > 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:585) > 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.version.PluginVersionNotFoundException: > The plugin 'org.apache.maven.plugins:maven-myplugin-plugin' does not exist > or no valid version could be found > at > org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:229) > at > org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:91) > at > org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:171) > at > org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1274) > ... 14 more > [INFO] > ------------------------------------------------------------------------ > [INFO] Total time: < 1 second > [INFO] Finished at: Fri Nov 21 13:08:21 CST 2008 > [INFO] Final Memory: 1M/2M > [INFO] > > And , i'm sure that i have deploy myplugin like this " > com.mycompany.maven.plugins:maven-myplugin-plugin:1.0". > -- > 漠洋(苏琳冲) > SuLinchong > Phone 13656669328 > Qq 387973308 > Msn sulinch...@hotmail.com > > -- View this message in context: http://www.nabble.com/Does-the-%3CpluginGroup%3E-in-the-setting.xml-work--tp20615404p21612726.html Sent from the Maven - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@maven.apache.org For additional commands, e-mail: users-h...@maven.apache.org