servlets thread: =?gb2312?B?UmU6IFtzZXJ2bGV0c10gY2FuJ3QgZ2V0IHNlcnZsZXRzIHRvIHJ1biBvbiB0b21jYXQ=?=
post protected?public?
or get method?
> i have the proper entries in the web.xml and server.xml, so thats
> definately not the problem. however, when i do run my servlet, i get this
> error message:
>
> ---------------------------------------------------------------------------
>
> Error: 500
> Location: /meetthestudent/servlet/helloworld
> Internal Servlet Error:
>
> java.lang.NullPointerException
> at java.lang.ClassLoader.resolveClass0(Native Method)
> at java.lang.ClassLoader.resolveClass(ClassLoader.java:545)
> at org.apache.tomcat.loader.AdaptiveClassLoader.loadClass
> (AdaptiveClassLoader.java, Compiled Code)
> at org.apache.tomcat.loader.AdaptiveServletLoader.loadClass
> (AdaptiveServletLoader.java:174)
> at org.apache.tomcat.core.ServletWrapper.loadServlet
> (ServletWrapper.java:265)
> at org.apache.tomcat.core.ServletWrapper.init
> (ServletWrapper.java:289)
> at org.apache.tomcat.core.Handler.service(Handler.java:254)
> at org.apache.tomcat.core.ServletWrapper.service
> (ServletWrapper.java:372)
> at org.apache.tomcat.core.ContextManager.internalService
> (ContextManager.java:812)
> at org.apache.tomcat.core.ContextManager.service
> (ContextManager.java:758)
> at
> org.apache.tomcat.service.http.HttpConnectionHandler.processConnection
> (HttpConnectionHandler.java:213)
> at org.apache.tomcat.service.TcpWorkerThread.runIt
> (PoolTcpEndpoint.java, Compiled Code)
> at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
> (ThreadPool.java, Compiled Code)
> at java.lang.Thread.run(Thread.java:479)
>
> ---------------------------------------------------------------------------
>
> the code of the servlet is as follows:
>
> ---------------------------------------------------------------------------
>
> package helloworld;
> /**
> * <p>Title: </p>
> * <p>Description: </p>
> * <p>Copyright: Copyright (c) 2003</p>
> * <p>Company: </p>
> * @author not attributable
> * @version 1.0
> */
>
> import javax.servlet.http.HttpServlet;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
> import javax.servlet.ServletException;
>
> import java.io.IOException;
> import java.io.PrintWriter;
>
> public class HelloWorld extends HttpServlet {
> protected void doPost (HttpServletRequest request, HttpServletResponse
> response) throws ServletException, IOException {
> response.setContentType("text/html");
> PrintWriter out = response.getWriter();
> out.println("<html>\n\t<body>\n\t\t<basefont
> face=\"verdana\">\n\t\tHello World!\n\t</body>\n</html>");
> out.close();
> }
> }
>
> ---------------------------------------------------------------------------
>
> what's the problem? thanx for any help, i would immensely appreciate it!
>
> -Tom
>
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