surely it is a problem with your classpath not finding the servlet api
according to the root cause exception method and stack trace. Not sure
where tomcat keeps its servlet classes, probably in a servlet.jar or
j2ee.jar I would check that the jar file containing the servlet api classes
has not been corrupted and is in the classpaths for Tomcat - sorry if you
have already checked this....

root cause

java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet


 regards

 Michael Asbridge
 ____________________________
 Sun Certified Java 2 Programmer

 Application Developer (Advisory)
 (IBM Global Services(E-Business Application Services(Messaging Services)))

 location: IBM UK, North Harbour, F3T
 int tel: 258472
 ex tel: + 44 (0)2392 568472
 mobile: 07801 707 202

 "The first rule of Fight Club is: no smoking."


"Jorge Cambra" <[EMAIL PROTECTED]> on 10/10/2002 11:55:40

Please respond to [EMAIL PROTECTED]

To:    [EMAIL PROTECTED]
cc:
Subject:    Problems changing from Tomcat 3.2.2 to Tomcat 4.0.5




  Hello,

  I have programmed some web services that run okay in my Tomcat 3.2.2.
Then, I have installed in a different directory Tomcat 4.0.5 and installed
everything to get my services working exactly with the same configuration
that with my Tomcat 3.2.2 (same libraries, same classpath, ...). SOAP seems
to work fine, because some of the soap samples work fine, but not my
application. I'm using SOAP v2.3.1.

  In my Tomcat 4.0.5 I changed the setclasspath.bat file to modify the
Tomcat classpath like:

set
APP_LIBS=%BASEDIR%\common\lib\app\soap-services.jar;%BASEDIR%
\common\lib\app\utilCore.jar;%BASEDIR%\common\lib\app\coreCommon.jar
set
SOAP_LIBS=%BASEDIR%\common\lib\ext\xerces.jar;%BASEDIR%
\common\lib\ext\activation.jar;%BASEDIR%\common\lib\ext\mail.jar
set CLASSPATH=%SOAP_LIBS%;%APP_LIBS%;%JAVA_HOME%\lib\tools.jar


  Then, from the client that invokes the services I get the following
  error:

Executing service...
CALL before the call...[Header=null]
[methodName=consultaPeticionManosEnviadas]
[targetObjectURI=urn:ServiciosManosPruebaEjemplo]
[encodingStyleURI=http://schemas.xmlsoap.org/soap/encoding/]
[SOAPContext=[Parts={}]] [Params={[[name=container] [type=class
javax.activation.DataHandler] [value=javax.activation.DataHandler@65855a]
[encodingStyleURI=null]]}]

After the call: [Header=null] [methodName=null] [targetObjectURI=null]
[encodingStyleURI=null] [SOAPContext=[Parts={[cid:null type: text/xml;
charset=utf-8enc: null]}]] [fault=[Attributes={}]
[faultCode=SOAP-ENV:Server] [faultString=Exception from service object:
org/apache/soap/util/mime/ByteArrayDataSource]
[faultActorURI=/soap/servlet/rpcrouter] [DetailEntries=] [FaultEntries=]]
[Params={}]
There was an error: [Attributes={}] [faultCode=SOAP-ENV:Server]
[faultString=Exception from service object:
org/apache/soap/util/mime/ByteArrayDataSource]
[faultActorURI=/soap/servlet/rpcrouter] [DetailEntries=] [FaultEntries=]
Exception in thread "main" java.lang.NullPointerException
        at
empresa.manosPrueba.soap.services.ClienteSOAPEjemplo.main(ClienteSOAPEjemplo.java:145)



  I'm using a service that returns text information in a DataHandler. The
service fails aroud the code lines:

DataSource ds = new ByteArrayDataSource(textInformation, "text/xml");
DataHandler dh = new DataHandler(ds);
return dh;

  Because of the fault string
(org/apache/soap/util/mime/ByteArrayDataSource) I tried to add soap.jar to
the Tomcat 4.0.5 classpath, and then the rpcrouter servlet stops working.

  Does anybody have any idea of why my application that works fine with
Tomcat 3.2.2 doesn't work with Tomcat 4.0.5?

  Do I have to include soap.jar in the web application classpath?
  Any help would be really appreciated.
  Jorge

The servlet exception is:

type Exception report

message Internal Server Error

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

exception

javax.servlet.ServletException: Error allocating a servlet instance
 at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:659)
 at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

 at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)

 at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)

 at java.lang.Thread.run(Thread.java:484)


root cause

java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
 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$1.run(URLClassLoader.java:195)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
 at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1320)

 at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1254)

 at
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:867)

 at
org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:655)
 at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

 at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)

 at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)

 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
 at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)

 at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)

 at java.lang.Thread.run(Thread.java:484)




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