Re: [equinox-dev] Running a compiled JSP servlet via Servlet extension p

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Re: [equinox-dev] Running a compiled JSP servlet via Servlet extension points

From: Thomas Watson <tjwatson@xxxxxxxxxx>
Date: Fri, 5 May 2006 08:30:37 -0500
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This may be a red herring but it looks like the the Activator for org.eclipse.equinox.servlet.ext (ExtActivator.start) is calling createExecutableExtension from the following portion of the stacktrace. This has been known to cause classloading errors. See bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=5875.

org.eclipse.core.runtime.CoreException: Plug-in web.workbench was unable to load class org.apache.jsp.TestJsp. at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:165) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:151) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51) at org.eclipse.equinox.servlet.ext.ServletManager.added(ServletManager.java:72) at org.eclipse.equinox.servlet.ext.ExtensionPointTracker.open(ExtensionPointTracker.java:66) at org.eclipse.equinox.servlet.ext.ServletManager.start(ServletManager.java:51) at org.eclipse.equinox.servlet.ext.HttpServiceCustomizer.addingService(HttpServiceCustomizer.java:43) at org.osgi.util.tracker.ServiceTracker$Tracked.trackAdding(ServiceTracker.java:1011) at org.osgi.util.tracker.ServiceTracker$Tracked.trackInitialServices(ServiceTracker.java:875) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:282) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:221) at org.eclipse.equinox.servlet.ext.ExtActivator.start(ExtActivator.java:27) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:995) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:989) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:970)

Tom

"Peter Neubauer" <pnb@xxxxxxxxxxx>
Sent by: equinox-dev-bounces@xxxxxxxxxxx

05/05/2006 07:00 AM

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Subject	[equinox-dev] Running a compiled JSP servlet via Servlet extension points

Hi, not sure this is the right forum but since I am using only equinox incubator projects to get this running ... Basically, I'm trying to register a basic JspServlet, like package org.apache.jsp; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.jasper.runtime.HttpJspBase; public class TestJsp extends HttpJspBase { @Override public void _jspService(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException { arg1.getOutputStream().println("hello jsp"); arg1.getOutputStream().flush(); } } via the org.eclipse.equinox.servlet.ext registry extension points. Usual servlets in the same bundle are no problem to load and register using the plugin.xml. However, having imported all jasper and javax.servlet packages from other library bundles into the current bundle, still on instantiating the servlet I get the stacktrace below. I'm running on Eclipse 3.2RC2 and with the servlet.ext from CVS, plus some other jars exposing the different LIBs. Any hints on this? I'm thinking this should be a normal servlet after all, and for the others the javax.servlet.Servlet is found too? But I have no experiences with jasper stuff. Cheers /peter org.eclipse.core.runtime.CoreException: Plug-in web.workbench was unable to load class org.apache.jsp.TestJsp. at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:165) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:151) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51) at org.eclipse.equinox.servlet.ext.ServletManager.added(ServletManager.java:72) at org.eclipse.equinox.servlet.ext.ExtensionPointTracker.open(ExtensionPointTracker.java:66) at org.eclipse.equinox.servlet.ext.ServletManager.start(ServletManager.java:51) at org.eclipse.equinox.servlet.ext.HttpServiceCustomizer.addingService(HttpServiceCustomizer.java:43) at org.osgi.util.tracker.ServiceTracker$Tracked.trackAdding(ServiceTracker.java:1011) at org.osgi.util.tracker.ServiceTracker$Tracked.trackInitialServices(ServiceTracker.java:875) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:282) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:221) at org.eclipse.equinox.servlet.ext.ExtActivator.start(ExtActivator.java:27) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:995) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:989) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:970) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317) at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:329) at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1037) at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:573) at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:495) at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:275) at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:455) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:189) at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:291) org.eclipse.core.runtime.CoreException[1]: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:491) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:461) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:420) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:403) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:339) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:391) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:352) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:491) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:461) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:420) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:403) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:339) at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:379) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:352) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:491) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:461) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:420) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:403) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:339) at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:379) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:352) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:491) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:461) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:420) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:403) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:339) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:391) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:352) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83) at java.lang.ClassLoader.loadClass(Unknown Source) at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:147) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51) at org.eclipse.equinox.servlet.ext.ServletManager.added(ServletManager.java:72) at org.eclipse.equinox.servlet.ext.ExtensionPointTracker.open(ExtensionPointTracker.java:66) at org.eclipse.equinox.servlet.ext.ServletManager.start(ServletManager.java:51) at org.eclipse.equinox.servlet.ext.HttpServiceCustomizer.addingService(HttpServiceCustomizer.java:43) at org.osgi.util.tracker.ServiceTracker$Tracked.trackAdding(ServiceTracker.java:1011) at org.osgi.util.tracker.ServiceTracker$Tracked.trackInitialServices(ServiceTracker.java:875) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:282) at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:221) at org.eclipse.equinox.servlet.ext.ExtActivator.start(ExtActivator.java:27) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:995) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:989) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:970) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317) at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:329) at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1037) at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:573) at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:495) at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:275) at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:455) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:189) at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:291) _______________________________________________ equinox-dev mailing list equinox-dev@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/equinox-dev

References:
- [equinox-dev] Running a compiled JSP servlet via Servlet extension points
  - From: Peter Neubauer

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