Error Loading Webappclassloader Jboss
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Org.apache.catalina.core.applicationcontext Log Severe: Error Loading Webappclassloader
Servlets Error loading WebappClassLoader delegate: false elay Raja Greenhorn Posts: 27
Error Loading Webappclassloader Classnotfoundexception
posted 7 years ago If i give the url for example http://IPName/Servlet then i 'm getting the error in log which is shown below. though i parent classloader org apache catalina loader standardclassloader had specified the servlet in web.xml java.lang.ClassNotFoundException: com.XXX.YYY.Servlet at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at org.apache.catalina.core.StandardWrapper$1.run(StandardWrapper.java:1077) at java.security.AccessController.doPrivileged(Native Method) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1073) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:808) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) [Servlet] - Allocate exception for servlet ervlet java.lang.ClassNotFoundException: XXXX.YYYY.Servlet at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at org.apache.catalina.core.StandardWrapper$1.run(StandardWrapper.java:1077) at java.security.AccessController.doPrivileged(Native Method) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1073) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:808) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.apache.catalina.core.StandardH
java.security.SecureClassLoader java.net.URLClassLoader org.apache.catalina.loader.WebappClassLoader All Implemented Interfaces: Lifecycle public class WebappClassLoaderextends java.net.URLClassLoaderimplements Lifecycle Specialized web application class loader. This class loader is a full reimplementation of the URLClassLoader from the JDK. It is desinged to be fully compatible with a normal URLClassLoader, although its internal behavior may be completely different. IMPLEMENTATION NOTE - This class loader faithfully follows the delegation model recommended in the specification. The system class loader will be queried first, then https://coderanch.com/t/422349/Servlets/java/Error-loading-WebappClassLoader-delegate-false the local repositories, and only then delegation to the parent class loader will occur. This allows the web application to override any shared class except the classes from J2SE. Special handling is provided from the JAXP XML parser interfaces, the JNDI interfaces, and the classes from the servlet API, which https://docs.jboss.org/jbossweb/latest/api/org/apache/catalina/loader/WebappClassLoader.html are never loaded from the webapp repository. IMPLEMENTATION NOTE - Due to limitations in Jasper compilation technology, any repository which contains classes from the servlet API will be ignored by the class loader. IMPLEMENTATION NOTE - The class loader generates source URLs which include the full JAR URL when a class is loaded from a JAR file, which allows setting security permission at the class level, even when a class is contained inside a JAR. IMPLEMENTATION NOTE - Local repositories are searched in the order they are specified in the JarRepository. IMPLEMENTATION NOTE - No check for sealing violations or security is made unless a security manager is present. Version: $Revision: 1237 $ $Date: 2009-11-03 02:55:48 +0100 (Tue, 03 Nov 2009) $ Author: Remy Maucherat, Craig R. McClanahan Nested Class Summary protected class WebappClassLoader.PrivilegedFindResource Field Summary protected java.security.Permission https://community.oracle.com/thread/1718827 post a blank message. Please type your message and try again. More discussions in AVK Portability All PlacesOracle CommunityArchived ForumsAVK Portability This discussion is archived 0 Replies Latest reply on Dec 22, 2005 6:53 PM by 843844 J2EE Packaging - Error Loading WebAppClassLoader 843844 Dec 22, 2005 6:53 PM I have seen variations of this theme in the forum, but I am not quite sure if error loading the solutions apply to my situation. I have a Java Web Start app deployed and sort of running on JBoss A/S. I have treated the Web Start app as a web app and the following is my ear file layout: (I will eventually have MDBs) META-INF\application.xml META-INF\MANIFEST.MF mysql-connector-java-3.1.12-bin.jar qsender.jar (just a standalone test app) totalvu-servlet.jar - database access servlet totalvu.war (the web start app's jar is in error loading webappclassloader here) The war file layout: META-INF\MANIFEST.MF WEB-INF\lib\jardiff.jar WEB-INF\lib\jnlp-servlet.jar WEB-INF\lib\jnlp.jar WEB-INF\jboss-web.xml (inconsequential at this point) WEB-INF\web.xml totalvu.jar (the web start app's main, etc) totalvu.jnlp index.html shared.jar common.jar (servlets wants some of these classes) utilities.jar moreshared.jars (you get the idea) The problem is that inside totalv-servlet.jar there is a servlet that my web start app uses to access a database. This servlet needs to know about some shared classes, so I wanted to keep the servlet jar in the ear file as shown above. Seems like all the docs say that servlets have to go in the WEB-INF\classes folder as loose classes. This seems to be ok if the servlet is to support your canonical web app, but that isn't what I have. I have the proper entries in application.xml and web.xml. I actually had this working long enough to fully test the servlet for 3 days and then I started getting "Error Loading WebAppClassLoader" errors during deployment. The class loader for the web app cannot find the servlet that I have defined in the web.xml file even though the app server found it and deployed it along with every other module I had defined in the application.xml file