I have added a sample demonstrating ExceptionFaultListener. The sample directory name
is excfault. It is available through CVS right now, and will be included in the next
nightly build.
The key to making the ExceptionFaultListener class work is that the Exception
(Throwable, actually) that is thrown must have a serializer registered on the server
and a deserializer registered on the client. The sample uses ExcFaultException and
ExcFaultExceptionSerializer.
Scott Nichol
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----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, June 16, 2004 6:03 PM
Subject: ExceptionFaultListener
Scott,
Well, I have made a simple test about the ExceptionFaultListener problem.
I have emailed Eric M. Dashofy (one of the authors of ExceptionFaultListener),
and he said that he has't done any SOAP work in many years, and he doubt
that any of the code he have still works.
_____________________________________________________________________________________
For the test, I wrote a simple server, that all it does, is throw an Exception:
public class Server
{
public void test() throws Exception
{
throw new Exception("This is a test of the server throwing an Exception");
}
}
_____________________________________________________________________________________
I also wrote a simple client, that tries to invoke the test method, and
display an exception, if one is caught trying to make the invoke, or the
fault otherwise. The code is:
public class Client
{
public static void main(String args[])
{
org.apache.soap.rpc.Call RPCCall = new org.apache.soap.rpc.Call();
String URLSoap;
java.net.URL url = null;
java.util.Vector parameters = new java.util.Vector();
URLSoap = "http://localhost:8080/soap/servlet/rpcrouter";;
RPCCall.setTargetObjectURI("Server") ;
RPCCall.setMethodName("test");
RPCCall.setEncodingStyleURI(org.apache.soap.Constants.NS_URI_SOAP_ENC);
RPCCall.setParams(parameters);
org.apache.soap.rpc.Response r = null;
try{
url = new java.net.URL(URLSoap);}
catch(Exception e)
{
System.out.println("Exception trying to construct the URL: " + e.getMessage());
System.exit(0);
}
try{
r = RPCCall.invoke(url, "");}
catch(Exception e)
{
System.out.println("\nException captured trying to inovke a service:
" + e.getMessage());
System.exit(0);
}
if (r.generatedFault())
{
org.apache.soap.Fault f = r.getFault();
java.util.Vector v = f.getDetailEntries();
System.out.println("SOAP Fault captured\nNumber of elements in the detail
entries vector: " + v.size() + "\n");
for (int i = 0; i < v.size(); i++)
System.out.println("Class of detail entry " + i + ": " + v.get(i).getClass());
System.out.println("\nFault toString: " + f.toString());
}
}
}
_____________________________________________________________________________________
The deployment descriptor is the following:
<isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment";
id="Server">
<isd:provider type="java"
scope="Application"
methods="test">
<isd:java class="Server" static="false"/>
</isd:provider>
<isd:faultListener>org.apache.soap.server.ExceptionFaultListner</isd:faultListener>
</isd:service>
_____________________________________________________________________________________
Using the client with SOAP 2.3.1 (production), I obtained the following
result:
Exception captured trying to inovke a service: Unsupported response content
type "text/html; charset=ISO-8859-1", must be: "text/xml".
Response was:
<html><head><title>Apache Tomcat/5.0.18 - Informe de
Error</title><style><!--H1
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;}
H2
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;}
H3
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;}
BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;}
B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;}
P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A
{color : black;}A.name {color : black;}HR {color : #525D76;}--></style>
</head><body><h1>Estado HTTP 500 - </h1><HR
size="1"
noshade><p><b>type</b> Informe de
Excepción</p><p><b>mensaje</b>
<u></u></p><p><b>descripción</b> <u>El
servidor encontró un error interno () que hizo que no pudiera rellenar este
requerimiento.</u></p><p><b>excepción</b>
<pre>javax.servlet.ServletException: Error building response envelope:
java.lang.NullPointerException
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:418)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
</pre></p><p><b>nota</b> <u>La traza
completa de la causa de este error se encuentra en los archivos de diario
de Tomcat.</u></p><HR size="1" noshade><h3>Apache
Tomcat/5.0.18</h3></body></html>
_____________________________________________________________________________________
And using the SOAP nightly build (2004-04-07), I obatined the following
result:
SOAP Fault captured
Number of elements in the detail entries vector: 1
Class of detail entry 0: class org.apache.crimson.tree.ElementNode2
Fault toString: [Attributes={}] [faultCode=SOAP-ENV:Server] [faultString=Exception
from service object: This is a test of the server throwing
an Exception] [faultActorURI=/soap/servlet/rpcrouter] [DetailEntries=
[(0)=<stackTrace>java.lang.Exception: This is a test of the server throwing
an Exception
at Server.test(Server.java:5)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.soap.server.RPCRouter.invoke(Unknown Source)
at org.apache.soap.providers.RPCJavaProvider.invoke(Unknown Source)
at org.apache.soap.server.http.RPCRouterServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:195)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
</stackTrace>]
] [FaultEntries=]
_____________________________________________________________________________________
Sorry about the extension of the email.
I really don't know anything how Apache SOAP works internally, but if you
give me an idea of where can I start studying to get to the bottom of the
matter of the problem, and it doesn't take too long, I could do it.
Thanks very much,
tizo
