Thanks for the answer. So, I tried maven-checkstyle-plugin 2.2 and it didn't work either, but that's a good beginning to have the correct plugin version... In the xml checkstyle configuration file where modules are defined, i tried to change <module name="TreeWalker"> by <module name="com.puppycrawl.tools.checkstyle.TreeWalker">and it now works. I don't really understand why we have to specify the fully qualified name of this class, because it works fine when not using maven.
On Wed, Jun 4, 2008 at 11:47 PM, Dennis Lundberg <[EMAIL PROTECTED]> wrote: > The Checkstyle plugin version 2.1 uses Checkstyle 4.1. So you can't use > stuff from Checkstyle 4.3 in your Checkstyle configuration. > > Version 2.2 of the plugin, which is being released as we speak, uses > Checkstyle 4.4. Start by giving that version a try. > > > Julien Simon wrote: > >> Hi, >> I'm trying to integrate a checkstyle report in a maven project, but I'm >> facing a problem. The checkstyle report is based on a custom checkstyle >> check module I developed. >> I'm using maven 2.0.9, maven-checkstyle-plugin 2.1, and checkstyle 4.3 >> >> When I execute mvn checkstyle:checkstyle or mvn site, I get the following >> exception. I don't really understand why the TreeWalker can't be >> instantiated. >> >> Any help would be great! >> >> >> >> >> [ERROR] BUILD ERROR >> [INFO] >> ------------------------------------------------------------------------ >> [INFO] An error has occurred in Checkstyle report generation. >> >> Embedded error: Failed during checkstyle configuration >> Unable to instantiate TreeWalkerCheck >> [INFO] >> ------------------------------------------------------------------------ >> [DEBUG] Trace >> org.apache.maven.lifecycle.LifecycleExecutionException: An error has >> occurred in Checkstyle report generation. >> at >> >> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:583) >> at >> >> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:512) >> at >> >> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:482) >> 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.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:64) >> at >> >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> at java.lang.reflect.Method.invoke(Method.java:615) >> 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.MojoExecutionException: An error has >> occurred in Checkstyle report generation. >> at >> >> org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:79) >> at >> >> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451) >> at >> >> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558) >> ... 16 more >> Caused by: org.apache.maven.reporting.MavenReportException: Failed during >> checkstyle configuration >> at >> >> org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:488) >> at >> >> org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:98) >> at >> >> org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:73) >> ... 18 more >> Caused by: com.puppycrawl.tools.checkstyle.api.CheckstyleException: cannot >> initialize module TreeWalker - Unable to instantiate TreeWalker >> at com.puppycrawl.tools.checkstyle.Checker.setupChild(Checker.java:165) >> at >> >> com.puppycrawl.tools.checkstyle.api.AutomaticBean.configure(AutomaticBean.java:209) >> at >> >> org.apache.maven.plugin.checkstyle.CheckstyleReport.executeCheckstyle(CheckstyleReport.java:723) >> at >> >> org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:484) >> ... 20 more >> Caused by: com.puppycrawl.tools.checkstyle.api.CheckstyleException: Unable >> to instantiate TreeWalker >> at >> >> com.puppycrawl.tools.checkstyle.PackageObjectFactory.createModule(PackageObjectFactory.java:152) >> at com.puppycrawl.tools.checkstyle.Checker.setupChild(Checker.java:140) >> ... 23 more >> Caused by: com.puppycrawl.tools.checkstyle.api.CheckstyleException: Unable >> to instantiate TreeWalkerCheck >> at >> >> com.puppycrawl.tools.checkstyle.PackageObjectFactory.doMakeObject(PackageObjectFactory.java:94) >> at >> >> com.puppycrawl.tools.checkstyle.PackageObjectFactory.createModule(PackageObjectFactory.java:149) >> ... 24 more >> >> > > -- > Dennis Lundberg > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
