Hi all,
We have successfully deployed some servlets using JBoss 4.0.1. We are now
trying to use the Velocity template engine (which we have used running just
tomcat and apache). When accessing the servlet all we get is the exception
below, saying that the class is not a servlet.
| javax.servlet.ServletException: Class
com.transactive.online.submission.LoanSubmitServlet is not a Servlet
|
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66)
|
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:150)
|
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54)
|
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
| org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
|
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
|
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
|
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
|
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
| java.lang.Thread.run(Thread.java:536)
|
| root cause
|
| java.lang.ClassCastException
|
com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:293)
| javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
|
com.transactive.online.submission.LoanSubmitServlet.<init>(LoanSubmitServlet.java:35)
| sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
|
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
|
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
| java.lang.reflect.Constructor.newInstance(Constructor.java:274)
| java.lang.Class.newInstance0(Class.java:306)
| java.lang.Class.newInstance(Class.java:259)
|
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66)
|
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:150)
|
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54)
|
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
| org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
|
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
|
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
|
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
|
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
| java.lang.Thread.run(Thread.java:536)
|
Here is the code for the servlet:
| package com.transactive.online.submission;
|
| import java.io.FileNotFoundException;
| import java.io.IOException;
| import java.util.Properties;
|
| import javax.naming.InitialContext;
| import javax.naming.NamingException;
| import javax.rmi.PortableRemoteObject;
| import javax.servlet.ServletConfig;
| import javax.servlet.http.HttpServletRequest;
| import javax.servlet.http.HttpServletResponse;
|
| import org.apache.velocity.Template;
| import org.apache.velocity.app.Velocity;
| import org.apache.velocity.context.Context;
| import org.apache.velocity.exception.ParseErrorException;
| import org.apache.velocity.exception.ResourceNotFoundException;
| import org.apache.velocity.servlet.VelocityServlet;
|
| public class LoanSubmitServlet extends /*HttpServlet*/ VelocityServlet
| {
| /*public void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException
| {
| PrintWriter out = response.getWriter();
| out.print("<HTML><H1>TEST</H1></HTML>");
| out.flush();
| return;
| }*/
|
| LoanSubmit loanSubmit = null;
| public LoanSubmitServlet() throws NamingException
| {
| javax.naming.Context ctx = new InitialContext();
| LoanSubmitHome home = (LoanSubmitHome)
PortableRemoteObject.narrow(ctx.lookup("LoanSubmit"), LoanSubmit.class);
| try
| {
| loanSubmit = home.create();
| }
| catch(Exception e) {}
| }
|
| protected Properties loadConfiguration(ServletConfig config) throws
IOException, FileNotFoundException
| {
| Properties p = new Properties();
| String path = config.getServletContext().getRealPath("/vm");
| if(path == null)
| {
| System.out.println(" SampleServlet.loadConfiguration()
: unable to get "
| + "the current
webapp root. Using '/'. Please fix.");
| path = "/";
| }
| p.setProperty(Velocity.FILE_RESOURCE_LOADER_PATH, path);
| p.setProperty("runtime.log", path + "velocity.log");
| return p;
| }
|
| public Template handleRequest(HttpServletRequest request,
HttpServletResponse response, Context ctx)
| {
| Template outty = null;
| try
| {
| outty = getTemplate("login.vm");
| }
| catch(ParseErrorException pee)
| {
| System.out.println("parse error for template " + pee);
| }
| catch(ResourceNotFoundException rnfe)
| {
| System.out.println("template not found " + rnfe);
| }
| catch(Exception e)
| {
| System.out.println("Error " + e);
| }
| return outty;
| }
| }
|
Changing it to a HttpServlet and implementing the doGet method works as
expected, its just when we extend VelocityServlet that it throws the exception.
Any help on this matter would be greatly appreciated.
Cheers,
Ryan Thomas
TransActive Systems
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