1 Reply Latest reply on Jan 11, 2007 11:47 AM by gennadyjb

    ServletException: Wrapper cannot find servlet class

    bad_clam Newbie

      Hi, very new to JBoss and trying to move an existing application running on unix to W2K. I am using JBoss 3.2.3 (with embedded tomcat 4.1.29), JDK SE 1.4.2_04. I have worked through a few issues with the help of the forums here but cannot get passed this one. Any help is welcomed. Thanks in advance.

      Here is the stack trace:
      2004-05-10 15:22:45,556 INFO [org.jboss.web.localhost.Engine] StandardWrapper[/catalog_dev:default]: Loading container servlet default
      2004-05-10 15:22:45,572 INFO [org.jboss.web.localhost.Engine] StandardWrapper[/catalog_dev:apManager]: Marking servlet apManager as unavailable
      2004-05-10 15:22:45,587 ERROR [org.jboss.web.localhost.Engine] StandardContext[/catalog_dev]: Servlet /catalog_dev threw load() exception
      javax.servlet.ServletException: Wrapper cannot find servlet class com.icc.webcat.util.ApManager or a class it depends on
      at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:891)
      at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:823)
      at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3422)
      at org.apache.catalina.core.StandardContext.start(StandardContext.java:3623)
      at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:821)
      at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
      at org.jboss.web.tomcat.tc4.EmbeddedTomcatService.createWebContext(EmbeddedTomcatService.java:549)
      at org.jboss.web.tomcat.tc4.EmbeddedTomcatService.performDeploy(EmbeddedTomcatService.java:309)
      at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:428)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:832)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:824)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:642)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:605)
      at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
      at $Proxy6.deploy(Unknown Source)
      at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:302)
      at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:476)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:201)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:274)
      at org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:192)
      at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:976)
      at $Proxy0.start(Unknown Source)
      at org.jboss.system.ServiceController.start(ServiceController.java:394)
      at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
      at $Proxy4.start(Unknown Source)
      at org.jboss.deployment.SARDeployer.start(SARDeployer.java:226)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:832)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:642)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:605)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:589)
      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:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
      at $Proxy5.deploy(Unknown Source)
      at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:384)
      at org.jboss.system.server.ServerImpl.start(ServerImpl.java:291)
      at org.jboss.Main.boot(Main.java:150)
      at org.jboss.Main$1.run(Main.java:395)
      at java.lang.Thread.run(Thread.java:534)
      2004-05-10 15:22:45,681 ERROR [org.jboss.web.localhost.Engine] ----- Root Cause -----
      java.lang.ClassNotFoundException: com.icc.webcat.util.ApManager
      at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
      .
      .
      .

      Here is the servlet in the web.xml
      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
      <web-app>
      [snip]

      <servlet-name>apManager</servlet-name>
      <servlet-class>com.icc.webcat.util.ApManager</servlet-class>
      <init-param>
      <param-name>loglevel</param-name>
      <param-value>DEBUG</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>

      [snip]
      </web-app>

      I have double checked that my jars are in the correct directories.


      Regards.