Failed to load servlet: java.lang.ClassNotFoundException

Question

I've been working on a project with other developers and we've all have our own sections of a large web application that we are working on. When we are each done working on our part we send our JSPs, Beans, and servlets to the lead developer that then deploys one EAR file on our Test/QA server. I now asked the tech lead if he could send me the EAR file so I can load the application in its entirety on my local machine. When I start up the server, I get the error "Failed to load servlet: java.lang.ClassNotFoundException" for each one of my servlets. Even if the servlet path is correct I still get that error. I also tried removing the servlet in the web.xml file and then adding it again, but I still get that error. Has anyone experienced anything like this before? Is this error appearing because I have two projects (my part of the application with only my code and the complete project from the EAR file) that point to the same servlets? I'm not sure how to resolve this. Any advice would be greatly appreciated. Thanks in advance!

Answer 1

That's what I thought too. But I'm installing an EAR file exported directly from another persons computer and the application is working fine on his machine. So the EAR file will automatically place the servlets in their proper path and directory structure when I import it. In any case I checked the paths myself and they are correct (the servlet file does exist in the same path). I also removed the servlet from the web.xml file and added it again through the websphere UI so if there was any miss-type in the directory path it would have been corrected by websphere. I also tried making a minor change to the servlet file and resaving it thinking that it might correct something or do something that would allow my websphere environment to see/recognize the existance of the servlet, but that did not work. I'm out of ideas. Does anyone have any suggestions? Here is a part of my log file if it helps: Thanks!
*** Starting the server ***
IBM WebSphere Application Server, Release 4.0.4
Advanced Single Server Edition for Multiplatforms
Copyright IBM Corp., 1997-2001
************ Start Display Current Environment ************
WebSphere AEs 4.0.4 ptf40230.02 running with process name localhost/Default Server and process id 3188
Host Operating System is Windows 2000, version 5.0
Java version = J2RE 1.3.1 IBM Windows 32 build cn131w-20020710 ORB130 (JIT enabled: jitc), Java Compiler = jitc, Java VM name = Classic VM
server.root = C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4
Java Home = C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4\java\jre
ws.ext.dirs = C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/java/lib;C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/classes;C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/lib;C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/lib/ext;C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/web/help;C:/Program Files/IBM/WebSphere Studio/wstools/eclipse/plugins/com.ibm.etools.websphere.tools.common_5.0.1/runtime/wasListener.jar;C:/Program Files/IBM/WebSphere Studio/wstools/eclipse/plugins/com.ibm.etools.webservice_5.0.1/runtime/worf.jar
Classpath = C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/properties;C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/lib/bootstrap.jar;C:/Program Files/IBM/WebSphere Studio/wstools/eclipse/plugins/com.ibm.etools.websphere.tools.common_5.0.1/runtime/wteServers.jar;C:/Program Files/IBM/WebSphere Studio/wstools/eclipse/plugins/com.ibm.etools.websphere.tools.common_5.0.1/runtime/wasToolsCommon.jar
Java Library path = C:\Program Files\IBM\WebSphere Studio\runtimes\aes_v4/bin;C:\Program Files\IBM\WebSphere Studio\eclipse\jre\bin;.;C:\WINNT\system32;C:\WINNT;C:\Program Files\CA\Dcs\DMScripting\;C:\Program Files\CA\DCS\CAWIN\;C:\oracle\ora81\bin;C:\Program Files\Oracle\jre\1.1.7\bin;C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\CA_APPSW;C:\TNGSD\BIN;C:\Program Files\QuickTime\QTSystem\;C:\PROGRA~1\MICROS~2\Office;C:\Program Files\Microsoft SQL Server\80\Tools\BINN
Current trace specification = *=all=disabled
************* End Display Current Environment *************
[9/13/06 9:25:18:620 EDT] 64a937ec Server U Version : 4.0.4
[9/13/06 9:25:18:636 EDT] 64a937ec Server U Edition: Advanced Single Server Edition for Multiplatforms
[9/13/06 9:25:18:636 EDT] 64a937ec Server U Build date: Thu Sep 05 00:00:00 EDT 2002
[9/13/06 9:25:18:636 EDT] 64a937ec Server U Build number: ptf40230.02
[9/13/06 9:25:21:933 EDT] 64a937ec DrAdminServer I WSVR0053I: DrAdmin available on port 7000
[9/13/06 9:25:21:995 EDT] 64a937ec ResourceBinde I WSVR0049I: Binding Session Persistence datasource as jdbc/Session
[9/13/06 9:25:22:136 EDT] 64a937ec ResourceBinde I WSVR0049I: Binding IDS as jdbc/IDS
[9/13/06 9:25:23:120 EDT] 64a937ec ServletEngine A SRVE0161I: IBM WebSphere Application Server - Web Container. Copyright IBM Corp. 1998-2001
[9/13/06 9:25:23:183 EDT] 64a937ec ServletEngine A SRVE0162I: Servlet Specification Level: 2.2
[9/13/06 9:25:23:183 EDT] 64a937ec ServletEngine A SRVE0163I: Supported JSP Specification Level: 1.1
[9/13/06 9:25:23:292 EDT] 64a937ec ServletEngine A SRVE0167I: Session Manager is Configured - Initializing...
[9/13/06 9:25:23:401 EDT] 64a937ec CacheManager A DYNA0011E: Servlet cache file dynacache.xml not found; caching is disabled
[9/13/06 9:25:23:417 EDT] 64a937ec ServletEngine A SRVE0169I: Loading Web Module: IBM Universal Test Client.
[9/13/06 9:25:23:761 EDT] 64a937ec WebGroup I SRVE0091I: [Servlet LOG]: JSP 1.1 Processor: init
[9/13/06 9:25:23:792 EDT] 64a937ec WebGroup I SRVE0091I: [Servlet LOG]: SimpleFileServlet: init
[9/13/06 9:25:24:511 EDT] 64a937ec ServletEngine A SRVE0169I: Loading Web Module: IDS.
[9/13/06 9:25:24:683 EDT] 64a937ec WebGroup I SRVE0091I: [Servlet LOG]: JSP 1.1 Processor: init
[9/13/06 9:25:24:683 EDT] 64a937ec WebGroup I SRVE0091I: [Servlet LOG]: SimpleFileServlet: init
[9/13/06 9:25:24:698 EDT] 64a937ec WebGroup I SRVE0091I: [Servlet LOG]: InvokerServlet: init
[9/13/06 9:25:24:714 EDT] 64a937ec WebGroup X Servlet Error-[SettingsServlet]: Failed to load servlet: java.lang.ClassNotFoundException: com.comp.ids.admin.servlet.SettingsServlet
     at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java:382)
     at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:248)
     at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
     at com.ibm.ws.classloader.ReloadableClassLoader.loadClass(ReloadableClassLoader.java:79)
     at java.beans.Beans.instantiate(Beans.java:216)
     at java.beans.Beans.instantiate(Beans.java:77)
     at com.ibm.servlet.engine.webapp.WebAppServletManager.loadServlet(WebAppServletManager.java:141)
     at com.ibm.servlet.engine.webapp.WebAppServletManager.loadAutoLoadServlets(WebAppServletManager.java:325)
     at com.ibm.servlet.engine.webapp.WebApp.loadServletManager(WebApp.java:1218)
     at com.ibm.servlet.engine.webapp.WebApp.init(WebApp.java:145)
     at com.ibm.servlet.engine.srt.WebGroup.loadWebApp(WebGroup.java:259)
     at com.ibm.servlet.engine.srt.WebGroup.init(WebGroup.java:168)
     at com.ibm.servlet.engine.ServletEngine.addWebApplication(ServletEngine.java:652)
     at com.ibm.ws.runtime.WebContainer.install(WebContainer.java:36)
     at com.ibm.ws.runtime.Server.startModule(Server.java:617)
     at com.ibm.ws.runtime.StandardServer.initializeModules(StandardServer.java:333)
     at com.ibm.ws.runtime.StandardServer.initializeRuntime0(StandardServer.java:349)
     at com.ibm.ws.runtime.Server.initializeRuntime(Server.java:884)
     at com.ibm.ws.runtime.StandardServer.main(StandardServer.java:519)
     at java.lang.reflect.Method.invoke(Native Method)
     at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:158)
     at com.ibm.etools.websphere.tools.runner.api.ServerRunnerV4$1.run(ServerRunnerV4.java:56)
Message was edited by:
MCJasper