java servlet newbie problem

L

lasse_heinonen7

Hi, I can't get my Java servlets to work. Tomcat-4.1.31 and the example
servlets work fine.
I have added my own context "eka" under webapps.
The code builds ok:

package paketti1;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class Eka1 extends HttpServlet {

public void doGet ( HttpServletRequest request,
HttpServletResponse response )
throws ServletException, IOException {

response.setContentType("text/html");
PrintWriter out = response.getWriter();

out.println("<html>");
out.println("<head><title>He llo, Cruel
World!</title></head>");
out.println("<body>");
out.println("<h1>Hello, Cruel World !</h1>");
out.println("This is my last servlet.");
out.println("</body>");
}// end doGet

}///:~


This is what I have added to server.xml:
<Context path="/eka" docBase="eka" debug="0" reloadable="true" />

my web.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<servlet>
<servlet-name>Eka1</servlet-name>
<servlet-class>paketti1.Eka1</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>Eka1</servlet-name>
<url-pattern>/Eka1</url-pattern>
</servlet-mapping>

</web-app>

My class file is here:
/usr/local/jakarta-tomcat-4.1.31/webapps/eka/WEB-INF/classes/paketti1

I put this to address bar http://localhost:8080/eka/Eka1
and I received an error message:

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: Wrapper cannot find servlet class
paketti1.Eka1 or a class it depends on
at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:844)
at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:621)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:163)
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.ClassNotFoundException: paketti1.Eka1
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1407)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1252)
at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:838)
at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:621)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:163)
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)

Apache Tomcat/4.1.31

What have I done wrong?
Regars Lasse
 
G

Greger

Hi, I can't get my Java servlets to work. Tomcat-4.1.31 and the example
servlets work fine.
I have added my own context "eka" under webapps.
The code builds ok:

package paketti1;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class Eka1 extends HttpServlet {

public void doGet ( HttpServletRequest request,
HttpServletResponse response )
throws ServletException, IOException {

response.setContentType("text/html");
PrintWriter out = response.getWriter();

out.println("<html>");
out.println("<head><title>He llo, Cruel
World!</title></head>");
out.println("<body>");
out.println("<h1>Hello, Cruel World !</h1>");
out.println("This is my last servlet.");
out.println("</body>");
}// end doGet

}///:~


This is what I have added to server.xml:
<Context path="/eka" docBase="eka" debug="0" reloadable="true" />

my web.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<servlet>
<servlet-name>Eka1</servlet-name>
<servlet-class>paketti1.Eka1</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>Eka1</servlet-name>
Click to expand...
 
L

lasse_heinonen7

This didn't help:
HTTP Status 404 - /Eka1

type Status report

message /Eka1

description The requested resource (/Eka1) is not available.
Apache Tomcat/4.1.31


Greger kirjoitti:
 
J

Juha Laiho

(e-mail address removed) said:
Hi, I can't get my Java servlets to work. Tomcat-4.1.31 and the example
servlets work fine.
I have added my own context "eka" under webapps.
Click to expand...

Pretty much everything seems ok.
The code builds ok:

package paketti1;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class Eka1 extends HttpServlet {
Click to expand...

I suppose the generated class file is named Eka1.class (note the capital
E in the file name)?
This is what I have added to server.xml:
<Context path="/eka" docBase="eka" debug="0" reloadable="true" />
Click to expand...

Looks good. You could try increasing the debug level, though.
My class file is here:
/usr/local/jakarta-tomcat-4.1.31/webapps/eka/WEB-INF/classes/paketti1
Click to expand...

Seems correct. Does the Tomcat runtime account (so, the user account
under which you're running the tomcat processes) have at least read
access to everything within webapps/eka?
javax.servlet.ServletException: Wrapper cannot find servlet class
paketti1.Eka1 or a class it depends on
Click to expand...

.... I wonder where/why this happens. The error message is clear, at
least.
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

jsp error 0
tomcat cannot refresh my webapps 5
java.lang.NoClassDefFoundError: org/aspectj/lang/Signature 2
app vendor telling porkies? 6
servlet exception 5
Servlet cannot deserialize file 0
broken pipe error messages thrown by tomcat -- how to suppress? 0
java.lang.NoClassDefFoundError 6

Members online

No members online now.
Total: 37 (members: 0, guests: 37)
Robots: 451

Forum statistics

Threads
473,769
Messages
2,569,580
Members
45,054
Latest member
TrimKetoBoost

Latest Threads

Top