Re: Tomcat in Eclipse Error 500 java.lang.ClassNotFoundException
Yeh that was just a dodgy hack to get around my initial errors when using javac. I found out later the reason why javac wasn't working on my servlet class was because servlet-api.jar wasn't on the classpath, after adding that I was able to compile it the normal way. Also the solution is NOT to put it in the WEB-INF folder, you need to have your .class file in the build/classes/Yourpackage folder. Pid * wrote: On 10/06/2010 03:20, Vitalstatistix wrote: SOLVED: There was no HelloServlet.class file so I had to put an empty main method into the HelloServlet.java class and run it to generate the HelloServlet.class file, then I placed the class file in the WEB-INF folder and it all worked fine. Er, what? 1. There's no need for an empty main method. 2. We usually just compile a .java file to get a .class p Vitalstatistix wrote: Hey, I've just been working on this tutorial here: http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html It has been pretty good and I've got the jsp page to show the time but when I try going to the HelloServlet I get the error 500. http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html Error Report type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Wrapper cannot find servlet class com.example.servlets.HelloServlet or a class it depends on org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) root cause java.lang.ClassNotFoundException: com.example.servlets.HelloServlet org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) web.xml file generated in my Eclipse web project ?xml version=1.0 encoding=UTF-8? web-app xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xmlns=http://java.sun.com/xml/ns/javaee; xmlns:web=http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; xsi:schemaLocation=http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; id=WebApp_ID version=2.5 display-nameFirstWebProject/display-name welcome-file-list welcome-fileindex.html/welcome-file welcome-fileindex.htm/welcome-file welcome-fileindex.jsp/welcome-file welcome-filedefault.html/welcome-file welcome-filedefault.htm/welcome-file welcome-filedefault.jsp/welcome-file /welcome-file-list servlet description/description display-nameHelloServlet/display-name servlet-nameHelloServlet/servlet-name servlet-classcom.example.servlets.HelloServlet/servlet-class /servlet servlet-mapping servlet-nameHelloServlet/servlet-name url-pattern/HelloServlet/url-pattern /servlet-mapping /web-app Sorry I don't know how to add code tags in this forum. I'm using Tomcat 6. I've made no changes to ANY web.xml files, I simply followed that short basic tutorial step by step. My HelloServlet.java class is exactly the same as in the tutorial and is in the same package. Could you please tell me why it can't seem to find the class? Thanks heaps, :) -- View this message in context: http://old.nabble.com/Tomcat-in-Eclipse-Error-500-java.lang.ClassNotFoundException-tp28830890p28851220.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Tomcat in Eclipse Error 500 java.lang.ClassNotFoundException
Hey, I've just been working on this tutorial here: http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html It has been pretty good and I've got the jsp page to show the time but when I try going to the HelloServlet I get the error 500. http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html Error Report type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Wrapper cannot find servlet class com.example.servlets.HelloServlet or a class it depends on org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) root cause java.lang.ClassNotFoundException: com.example.servlets.HelloServlet org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) web.xml file generated in my Eclipse web project ?xml version=1.0 encoding=UTF-8? web-app xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xmlns=http://java.sun.com/xml/ns/javaee; xmlns:web=http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; xsi:schemaLocation=http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; id=WebApp_ID version=2.5 display-nameFirstWebProject/display-name welcome-file-list welcome-fileindex.html/welcome-file welcome-fileindex.htm/welcome-file welcome-fileindex.jsp/welcome-file welcome-filedefault.html/welcome-file welcome-filedefault.htm/welcome-file welcome-filedefault.jsp/welcome-file /welcome-file-list servlet description/description display-nameHelloServlet/display-name servlet-nameHelloServlet/servlet-name servlet-classcom.example.servlets.HelloServlet/servlet-class /servlet servlet-mapping servlet-nameHelloServlet/servlet-name url-pattern/HelloServlet/url-pattern /servlet-mapping /web-app Sorry I don't know how to add code tags in this forum. I'm using Tomcat 6. I've made no changes to ANY web.xml files, I simply followed that short basic tutorial step by step. My HelloServlet.java class is exactly the same as in the tutorial and is in the same package. Could you please tell me why it can't seem to find the class? Thanks heaps, :) -- View this message in context: http://old.nabble.com/Tomcat-in-Eclipse-Error-500-java.lang.ClassNotFoundException-tp28830890p28830890.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat in Eclipse Error 500 java.lang.ClassNotFoundException
Hey thanks 4 the response, Yes, I do have: package com.example.servlets; At the top of my HelloServlet.java file. So still stuck :( Vitalstatistix wrote: Hey, I've just been working on this tutorial here: http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html It has been pretty good and I've got the jsp page to show the time but when I try going to the HelloServlet I get the error 500. http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html Error Report type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Wrapper cannot find servlet class com.example.servlets.HelloServlet or a class it depends on org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) root cause java.lang.ClassNotFoundException: com.example.servlets.HelloServlet org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) web.xml file generated in my Eclipse web project ?xml version=1.0 encoding=UTF-8? web-app xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xmlns=http://java.sun.com/xml/ns/javaee; xmlns:web=http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; xsi:schemaLocation=http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; id=WebApp_ID version=2.5 display-nameFirstWebProject/display-name welcome-file-list welcome-fileindex.html/welcome-file welcome-fileindex.htm/welcome-file welcome-fileindex.jsp/welcome-file welcome-filedefault.html/welcome-file welcome-filedefault.htm/welcome-file welcome-filedefault.jsp/welcome-file /welcome-file-list servlet description/description display-nameHelloServlet/display-name servlet-nameHelloServlet/servlet-name servlet-classcom.example.servlets.HelloServlet/servlet-class /servlet servlet-mapping servlet-nameHelloServlet/servlet-name url-pattern/HelloServlet/url-pattern /servlet-mapping /web-app Sorry I don't know how to add code tags in this forum. I'm using Tomcat 6. I've made no changes to ANY web.xml files, I simply followed that short basic tutorial step by step. My HelloServlet.java class is exactly the same as in the tutorial and is in the same package. Could you please tell me why it can't seem to find the class? Thanks heaps, :) -- View this message in context: http://old.nabble.com/Tomcat-in-Eclipse-Error-500-java.lang.ClassNotFoundException-tp28830890p28837645.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat in Eclipse Error 500 java.lang.ClassNotFoundException
SOLVED: There was no HelloServlet.class file so I had to put an empty main method into the HelloServlet.java class and run it to generate the HelloServlet.class file, then I placed the class file in the WEB-INF folder and it all worked fine. Thanks Vitalstatistix wrote: Hey, I've just been working on this tutorial here: http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html It has been pretty good and I've got the jsp page to show the time but when I try going to the HelloServlet I get the error 500. http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/index.html Error Report type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Wrapper cannot find servlet class com.example.servlets.HelloServlet or a class it depends on org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) root cause java.lang.ClassNotFoundException: com.example.servlets.HelloServlet org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Unknown Source) web.xml file generated in my Eclipse web project ?xml version=1.0 encoding=UTF-8? web-app xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xmlns=http://java.sun.com/xml/ns/javaee; xmlns:web=http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; xsi:schemaLocation=http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd; id=WebApp_ID version=2.5 display-nameFirstWebProject/display-name welcome-file-list welcome-fileindex.html/welcome-file welcome-fileindex.htm/welcome-file welcome-fileindex.jsp/welcome-file welcome-filedefault.html/welcome-file welcome-filedefault.htm/welcome-file welcome-filedefault.jsp/welcome-file /welcome-file-list servlet description/description display-nameHelloServlet/display-name servlet-nameHelloServlet/servlet-name servlet-classcom.example.servlets.HelloServlet/servlet-class /servlet servlet-mapping servlet-nameHelloServlet/servlet-name url-pattern/HelloServlet/url-pattern /servlet-mapping /web-app Sorry I don't know how to add code tags in this forum. I'm using Tomcat 6. I've made no changes to ANY web.xml files, I simply followed that short basic tutorial step by step. My HelloServlet.java class is exactly the same as in the tutorial and is in the same package. Could you please tell me why it can't seem to find the class? Thanks heaps, :) -- View this message in context: http://old.nabble.com/Tomcat-in-Eclipse-Error-500-java.lang.ClassNotFoundException-tp28830890p28838037.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
