Hi, I am trying to invoke a servlet on tomcat4 on win98, the servlet is in the directory c:\tomcat4\classes. The servlet file is HelloWWW2.class. When I enter the URL - http://localhost:8080/servlet/HelloWWW2 I get an error message, as below. I am pretty sure that tomcat is set up ok because I get to the main tomcat index page when I enter the URL http://localhost:8080/ Here is the lengthy error message: A Servlet Exception Has Occurred Exception Report: javax.servlet.ServletException: Cannot allocate servlet instance for path /servlet/HelloWWW2 at org.apache.catalina.servlets.InvokerServlet.serveRequest(Unknown Source) at org.apache.catalina.servlets.InvokerServlet.doGet(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source) at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardContext.invoke(Unknown Source) at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.valves.AccessLogValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.connector.http.HttpProcessor.process(Unknown Source) at org.apache.catalina.connector.http.HttpProcessor.run(Unknown Source) at java.lang.Thread.run(Thread.java:484) Root Cause: java.lang.NoClassDefFoundError: HelloWWW2 (wrong name: coreservlets/HelloWWW2) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at java.net.URLClassLoader.defineClass(URLClassLoader.java:248) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at org.apache.catalina.loader.StandardClassLoader.findClass(Unknown Source) at org.apache.catalina.loader.StandardClassLoader.loadClass(Unknown Source) at org.apache.catalina.loader.StandardClassLoader.loadClass(Unknown Source) at org.apache.catalina.loader.WebappClassLoader.loadClass(Unknown Source) at org.apache.catalina.loader.WebappClassLoader.loadClass(Unknown Source) at org.apache.catalina.core.StandardWrapper.load(Unknown Source) at org.apache.catalina.core.StandardWrapper.allocate(Unknown Source) at org.apache.catalina.servlets.InvokerServlet.serveRequest(Unknown Source) at org.apache.catalina.servlets.InvokerServlet.doGet(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source) at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardContext.invoke(Unknown Source) at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.valves.AccessLogValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.connector.http.HttpProcessor.process(Unknown Source) at org.apache.catalina.connector.http.HttpProcessor.run(Unknown Source) at java.lang.Thread.run(Thread.java:484)
[This message has been edited by Chris Gray (edited September 25, 2001).]
mocca az
Ranch Hand
Joined: Mar 07, 2001
Posts: 93
posted
0
the servlet is in the directory c:\tomcat4\classes. The servlet file is HelloWWW2.class. When I enter the URL - http://localhost:8080/servlet/HelloWWW2 I get an error message, as below. I am pretty sure that tomcat is set up ok because I get to the main tomcat index page when I enter the URL http://localhost:8080/ Here is the lengthy error message: In the situation described above, your servlet should live in the C:\Tomcat\webapps\servlet\WEB-INF\classes\HelloWWW2.class In your WEB-INF directory you must have configured deployment descriptor (web.xml) file, in which you must "register" your servlet.
I agree. Here's the link: http://ej-technologies/jprofiler - if it wasn't for jprofiler, we would need to
run our stuff on 16 servers instead of 3.
0
