Can TLD jar can access through EAR / APP-INF/lib folder

Hi All,
If I have a TLD files into jar file and their specific classes are also into jar file .
Now can access those jar through EAR file APP-INF/lib folder or else its must to access through WEB-INF/lib folder.
any pointer will be great.
Regards,
Kal.

I suggest you assume that's how it's supposed to work, and get that to work most efficiently. I have no idea what you were trying to achieve by putting the taglib jar in APP-INF/lib. Perhaps you have multiple webapps and you wanted to avoid multiple instances of the taglib jar? If that's the case, I believe you could use WebLogic "shared application libraries" (I don't think that's the correct term), where you deploy a jar file as an application library, and the weblogic.xml file in each webapp that uses it would specify the name of the application library it uses.

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<pre>
EAR
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</pre>
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Weblogic version: 10.3.3
Platform: Linux x86-64 bit
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for some reason, it is always giving ClassNotFoundException for the classes inside the jars. This does not happen
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I'm experiencing a ClassNotFoundException errors in WebLogic 9.1 running with JDK 1.5.0_04 when I try to start an ear application that has defined, in the web module, a servlet for which the base class is inside an ear library which in turns try to get a class defined in the web module using Class.forName(...) during it's initializzation.
I've made a test ear project with the following structure:
prova.ear
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---- test.jar
------- com.ServletProva
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---------- com.ClasseDaLeggere
---------- com.ServletProvaDue [extends com.ServletProva]
------- web.xml
the content of web.xml is the following:
<?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">
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     <servlet-mapping>
          <servlet-name>ServletProva</servlet-name>
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     </servlet-mapping>
     <welcome-file-list>
          <welcome-file>index.html</welcome-file>
          <welcome-file>index.htm</welcome-file>
          <welcome-file>index.jsp</welcome-file>
          <welcome-file>default.html</welcome-file>
          <welcome-file>default.htm</welcome-file>
          <welcome-file>default.jsp</welcome-file>
     </welcome-file-list>
</web-app>
And the content of the com.ServletProva class is:
package com;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ServletProva extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
     public ServletProva() {
          super();
     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
     public void init() throws ServletException {
          try {
               Class.forName("com.ClasseDaLeggere");
          } catch (Exception e) {
               throw new ServletException(e);
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Trying to start the application i get the following error:
<4-ago-2008 15.57.32 CEST> <Warning> <Deployer> <BEA-149078> <Stack trace for message 149004
weblogic.application.ModuleException: [HTTP:101216]Servlet: "ServletProva" failed to preload on startup in Web application: "/prova".
java.lang.ClassNotFoundException: com.ClasseDaLeggere
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:222)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:195)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:130)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at com.ServletProva.init(ServletProva.java:38)
at com.ServletProvaDue.init(ServletProvaDue.java:37)
at javax.servlet.GenericServlet.init(GenericServlet.java:256)
at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:276)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:68)
at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58)
at weblogic.servlet.internal.StubLifecycleHelper.<init>(StubLifecycleHelper.java:48)
at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:493)
at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:1688)
at weblogic.servlet.internal.WebAppServletContext.loadServletsOnStartup(WebAppServletContext.java:1665)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1585)
at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2678)
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:874)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:326)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:114)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:25)
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:640)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:252)
at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:154)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:80)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:567)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:
131)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:101)
at weblogic.deploy.internal.targetserver.operations.StartOperation.doCommit(StartOperation.java:126)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:329)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:845)
at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1246)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:432)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:161
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(Deployment
ReceiverCallbackDeliverer.java:181)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiv
erCallbackDeliverer.java:12)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCal
lbackDeliverer.java:67)
at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:876)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:326)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:114)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
Truncated. see log file for complete stacktrace
java.lang.ClassNotFoundException: com.ClasseDaLeggere
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:222)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:195)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:130)
Truncated. see log file for complete stacktrace
Someone can help me to figure out this problem?

Check out this recent thread:
Re: weblogic 10 ear problem-urgent
If you're still having issues, then I recommend using the IDE tooling for WebLogic to do this in WTP or Workshop, then Export the EAR/WAR which will give you the structure.

Help with APP-INF/lib inside EAR

I have an EAR task in my ANT script, how do I add jars into APP-INF/
lib inside EAR ?
I dont want to create a folder structure in my project, only EAR
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<EAR root> /APP-INF/lib
Edited by: Taranfx_com on Oct 12, 2008 4:49 AM

try using prefer-web-inf-classes in the weblogic.xml file in your WAR file
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EAR project facet and APP-INF/lib

Hello,
I have four Workshop 10.3 projects which comprise an EAR. The projects are like this:
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- MyCommonLibControls (Project Facets: Utility Module 1.0, WebLogic Utility Module Extensions 10.3, ...)
- MyCommonLibSchemas (Project Facets: Utility Module 1.0, WebLogic Utility Module Extensions 10.3, ...)
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I tried to "hack my way around this" by creating an empty "dummy.jar" file and placing it in the EarContent folder of the "MyCommonLib" project and editing application.xml by hand. However, when I export an EAR, it does not make it into the archive (even if I add it to the J2EE Module Dependencies of the EAR project MyCommonLib) and therefore deployment fails because the dummy.jar referenced in my application.xml does not exist.
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Edited by: akarypid on Nov 4, 2010 2:29 AM

Hello,
Thank you for your input; the WAR approach works, although I don't like the idea of publishing web pages by importing the shared library.
However, I was hoping for an approach that would use the "standard J2EE" jar packaging approach whereby a project that is marked as a utilitiy module is not placed in the APP-INF/lib (thisi is weblogic-specific) but rather placed in the EAR's root and published in the standard application.xml as:
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Hi,
You can try to set the value true for prefer-web-inf-classes element which will cause the classes which are located in the directory \WEB-INF\lib of a Web application to be loaded in preference to classes loaded in the application or system class loader. This way we can be sure that the classes from the lib folder would be picked and used for this application.
Things to do:
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2) Add the following entries inside ”<APPLICATION_EAR>/META-INF/weblogic-application.xml” (You need to add the packages available in your JAR files which you want to be loaded from your application in Below)
<?xml version=”1.0″ encoding=”ISO-8859-1″?>
<weblogic-application xmlns=”http://www.bea.com/ns/weblogic/90″>
*<prefer-application-packages>*
<package-name>org.apache.*</package-name>
<package-name>org.apache.xerces.*</package-name>
<package-name>org.apache.xalan.*</package-name>
<package-name>org.apache.xmlcommons.*</package-name>
<package-name>org.apache.xerces.jaxp.*</package-name>
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NOTE: if you Don’t have an EAR File (Enterprise Application) Then First place all the JARs in “<WEB_APPLICATION>/WEB-INF/lib” And then you can perform ClassLoader Filtering by Adding the Following Entry in “<WEB_APPLICATION>/WEB-INF/weblogic.xml”
<weblogic-web-app xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns=”http://www.bea.com/ns/weblogic/90″ xsi:schemaLocation=”http://www.bea.com/ns/weblogic/90 http://www.bea.com/ns/weblogic/90/weblogic-web-app.xsd”>
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You can even go through the following link:
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Few more links which might help you:
Search for: prefer-web-inf-classes
http://download.oracle.com/docs/cd/E12840_01/wls/docs103/webapp/weblogic_xml.html
Search for: Configuring a FilteringClassLoader
http://download.oracle.com/docs/cd/E12840_01/wls/docs103/programming/classloading.html#wp1098468
Regards,
Ravish Mody
http://middlewaremagic.com/weblogic/
Come, Join Us and Experience The Magic…

APP-INF\lib

Hello,
I am migrating an ear from a j2ee1.4 websphere to javaee6 weblogic. As part of migrating from j2ee1.4 to javaee6, I made a change to the packaging. In j2ee1.4, our EAR had all the dependent jars for our 4 WARS in the root directory. I moved all the jars from root to APP-INF\lib.
I have been getting errors on classloading of hibernate/antlr jars. I would like to know if moving the jars to APP-INF/lib is right and non-problematic. Do I have to mandatorily use <library-ref> anywhere? Do I have to refer anywhere such as classpath in Manifest.mf or anyother place to tell weblogic about the location of jars?
Regards,
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If it's an archived EAR, you can find the exploded contents under the
server's .wlnotdelete directory.
APP-INF/lib jar files are also copied under the same directory.
-- Rob
Krish wrote:
If I have a jar file under APP-INF/lib in an EAR file, do the classes inside the
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[svn] 1494: + Copy jgroups.jar to qa-regress/WEB-INF/lib folder

Revision: 1494
Author: [email protected]
Date: 2008-04-30 12:29:37 -0700 (Wed, 30 Apr 2008)
Log Message:
+ Copy jgroups.jar to qa-regress/WEB-INF/lib folder
+ Add a clustered destination to remoting-config.mods.xml for codecoverage
+ Add url-load-balancing,class and default attributes to cluster definition in services-config.mods.xml for codecoverage
checkintests: passed
Modified Paths:
blazeds/trunk/qa/apps/qa-regress/WEB-INF/flex/remoting-config.mods.xml
blazeds/trunk/qa/apps/qa-regress/WEB-INF/flex/services-config.mods.xml
blazeds/trunk/qa/apps/qa-regress/build.xml

Please see following Sun Alert.
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101905-1
The document contains links to the patches that fix this problem.

Can TLD jar can access through EAR / APP-INF/lib folder

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