Major Description
When we make some mistake in the click.xml file on pages tags, Click throws the throwing javax.servlet.UnavailableException generic exception. Giving us no clues about the problem.
[Click] [debug] /border-template.htm -> CLASS NOT FOUND
[Click] [debug] /click/error.htm -> CLASS NOT FOUND
[Click] [debug] /click/not-found.htm -> CLASS NOT FOUND
[Click] [debug] /home.htm -> com.click.HomePage
[Click] [debug] click.xml pages:
java.lang.NullPointerException
at java.lang.Class.isAssignableFrom(Native Method)
at org.apache.click.service.XmlConfigService$PageElm.<init>(XmlConfigService.java:2032)
at org.apache.click.service.XmlConfigService.buildManualPageMapping(XmlConfigService.java:1088)
at org.apache.click.service.XmlConfigService.loadPages(XmlConfigService.java:1058)
at org.apache.click.service.XmlConfigService.onInit(XmlConfigService.java:259)
at org.apache.click.ClickServlet.initConfigService(ClickServlet.java:2054)
at org.apache.click.ClickServlet.init(ClickServlet.java:197)
at javax.servlet.GenericServlet.init(GenericServlet.java:241)
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:463)
at org.eclipse.jetty.servlet.ServletHolder.doStart(ServletHolder.java:283)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:771)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1222)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:676)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:455)
at org.mortbay.jetty.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:256)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:224)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:167)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:224)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:90)
at org.eclipse.jetty.server.Server.doStart(Server.java:260)
at org.mortbay.jetty.plugin.JettyServer.doStart(JettyServer.java:65)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:511)
at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:364)
at org.mortbay.jetty.plugin.JettyRunMojo.execute(JettyRunMojo.java:516)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
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:537)
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)
2012-06-14 11:44:51.612:WARN:/:ClickServlet: error while initializing Click servlet; throwing javax.servlet.UnavailableException
java.lang.NullPointerException
at java.lang.Class.isAssignableFrom(Native Method)
at org.apache.click.service.XmlConfigService$PageElm.<init>(XmlConfigService.java:2032)