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Re: [equinox-dev] Running a compiled JSP servlet via Servlet extension
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Thomas, this looks exactly like the problem I have. Actually I have seen teh double load attempt. Any way to avoid this?
/peter
-----Original message-----
From: Thomas Watson tjwatson@xxxxxxxxxx
Date: Fri, 5 May 2006 15:26:49 +0200
To: Equinox development mailing list equinox-dev@xxxxxxxxxxx
Subject: Re: [equinox-dev] Running a compiled JSP servlet via Servlet extension
points
> 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
> Please respond to
> Equinox development mailing list <equinox-dev@xxxxxxxxxxx>
>
>
> To
> equinox-dev@xxxxxxxxxxx
> cc
>
> 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)
>
> _______________________________________________
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> equinox-dev@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/equinox-dev
>
>
