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Author

servlet exception with code

Ron Isac
Greenhorn

Joined: Dec 22, 2004
Posts: 9
when i run the servlet the following exception display in the browser.

all the jar files are in classspath.




HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:222)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)

root cause

java.lang.NoSuchMethodError: org.apache.xerces.dom.ElementImpl.<init>(Lorg/apache/xerces/dom/DocumentImpl;Ljava/lang/String V
at TempServlet.doGet(TempServlet.java:26)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:696)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)


hai the code is bellow, the normal core java the process will sucess but

servlet the exception is display.


import java.io.*;

import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.*;
import org.apache.xerces.dom.*;
import org.apache.xalan.xslt.*;
import org.apache.xml.serialize.*;



public class TempServlet extends HttpServlet

{
public static FileOutputStream out;
public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
{

try
{
response.setContentType("text/html");
//PrintWriter pw=response.getWriter();

DocumentImpl doc = new DocumentImpl();


ElementImpl elem = new ElementImpl(doc,"LeaveStructure");

ElementImpl LeaveType = new ElementImpl(doc,"EmployeeName");
LeaveType.appendChild(doc.createTextNode("Name"));

elem.appendChild(LeaveType);


ElementImpl LeaveDescription = new ElementImpl(doc,"LeaveType");
LeaveDescription.appendChild(doc.createTextNode("Medical Leave"));
elem.appendChild(LeaveDescription);

ElementImpl NoDays = new ElementImpl(doc,"NoDays");
NoDays.appendChild(doc.createTextNode("10"));
elem.appendChild(NoDays);

Node root = elem;

doc.appendChild(elem);
OutputFormat formato = new OutputFormat(doc, "UTF-8", true);
StringWriter s = new StringWriter();
XMLSerializer ser = new XMLSerializer(s, formato);
ser.serialize(doc);
System.out.println(s.toString());

out = new FileOutputStream("i.html");
XSLTProcessor processor = XSLTProcessorFactory.getProcessor();
processor.process(new XSLTInputSource(doc),
new XSLTInputSource("List.xsl"),
new XSLTResultTarget(out));
processor.process(new XSLTInputSource(doc),
new XSLTInputSource("List.xsl"),
new XSLTResultTarget(response.getWriter()));
}catch(Exception e){e.printStackTrace();}
}
}

[ February 11, 2005: Message edited by: Ron Isac ]

[ February 11, 2005: Message edited by: Ron Isac ]
[ February 11, 2005: Message edited by: Ron Isac ]
Fisher Daniel
Ranch Hand

Joined: Sep 14, 2001
Posts: 582
Hi,
Could you please give us the source code of TempServlet?
Because the problem is at TempServlet class line 26 (inside method doGet()).

Thanks
daniel
 
 
subject: servlet exception with code