Re: AxisFault with custom exception

Lorenzo Dalla Vecchia Sat, 22 Jan 2005 06:35:49 -0800

I checked the website and tried following its guidelines: nothing. Everything works: the WSDL and the WSDD are correct but at the time the exception is throwed the <detail> item of the SOAP response does not contain exception fileds but only that "hostname" thing.

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"; xmlns:xsd="http://www.w3.org/2001/XMLSchema"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> <soapenv:Body> <soapenv:Fault> <faultcode>soapenv:Server.userException</faultcode> <faultstring>test.MyException</faultstring> <detail> <ns1:hostname xmlns:ns1="http://xml.apache.org/axis/";>atlantis</ns1:hostname> </detail> </soapenv:Fault> </soapenv:Body> </soapenv:Envelope>

Other ideas? It must have happened before... it almost looks like an Axis bug.

--
Lorenzo

-----Messaggio Originale----- Da: "Sunil Kothari" <[EMAIL PROTECTED]> A: <[EMAIL PROTECTED]> Data invio: sabato 22 gennaio 2005 14.35 Oggetto: Re: AxisFault with custom exception

Note that the exception class fields come under details element. And here's how its sent to the client:

?xml version="1.0" encoding="UTF-8"?>

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"; xmlns:xsd="http://www.w3.org/2001/XMLSchema"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>

<soapenv:Body>

 <soapenv:Fault>

  <faultcode>soapenv:Server.generalException</faultcode>

  <faultstring></faultstring>

  <detail>

   <ns1:fault href="#id0" xmlns:ns1="urn:banktest"/>

   <ns2:exceptionName
xmlns:ns2="http://xml.apache.org/axis/";>example.MyException</ns2:exceptionNa
me>

  </detail>

 </soapenv:Fault>

 <multiRef id="id0" soapenc:root="0"
soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";
xsi:type="ns3:MyException"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:ns3="urn:banktest">

  <errorDesc xsi:type="xsd:string">Invalid date format</errorDesc>

  <errorCode xsi:type="xsd:int">1220</errorCode>

 </multiRef>

</soapenv:Body>

</soapenv:Envelope>

[CUT]

A very good reference on exception handling is here:

Web services programming tips and tricks: Exception Handling with JAX-RPC
URL: http://www-106.ibm.com/developerworks/xml/library/ws-tip-jaxrpc.html

----- Original Message -----
From: "Lorenzo Dalla Vecchia" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, January 22, 2005 5:53 PM
Subject: AxisFault with custom exception

Hello everyone.

I'm new to Axis and to this mailing list and I'm having a hard time trying to throw custom exceptions from my Axis web service.

I'm working with a simple test project. Here's my exception class:

public class MyException
    extends Exception
{
    private String nome1;
    private String nome2;

    public MyException(String nome1, String nome2)
    {
        this.nome1 = nome1;
        this.nome2 = nome2;
    }
    public void setNome1(String nome1) {
        this.nome1 = nome1;
    }
    public String getNome1() {
        return nome1;
    }
    public void setNome2(String nome2) {
        this.nome2 = nome2;
    }
     public String getNome2() {
        return nome2;
    }
}

I followed the "bean" pattern to have Axis serialize it automatically.
Java2WSDL produces the following description for the exception, which I
think is correct.

      <complexType name="MyException">
        <sequence>
          <element name="nome1" nillable="true" type="xsd:string"/>
          <element name="nome2" nillable="true" type="xsd:string"/>
        </sequence>
      </complexType>

I then execute WSDL2Java to generate proxy client classes and WSDD
descriptors. Here is the type binding in deply.wsdd:

      <typeMapping
        xmlns:ns=http://test
        qname="ns:MyException"
        type="java:text.proxy.MyException"
        serializer="org.apache.axis.encoding.ser.BeanSerializerFactory"

deserializer="org.apache.axis.encoding.ser.BeanDeserializerFactory"

        encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";
      />
Now, the part where the problem arises. I build a simple client that calls

a

method throwing MyException and here's the result:

AxisFault
 faultCode:

{http://schemas.xmlsoap.org/soap/envelope/}Server.userException

 faultSubcode:
 faultString: test.MyException
 faultActor:
 faultNode:
 faultDetail:
 {http://xml.apache.org/axis/}hostname:atlantis

test.MyException
 at

org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder.java:2
21)

at

org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:12
8)

at

org.apache.axis.encoding.DeserializationContext.endElement(DeserializationCo
ntext.java:1083)

 at org.apache.crimson.parser.Parser2.maybeElement(Unknown Source)
 at org.apache.crimson.parser.Parser2.content(Unknown Source)
 at org.apache.crimson.parser.Parser2.maybeElement(Unknown Source)
 at org.apache.crimson.parser.Parser2.content(Unknown Source)
 at org.apache.crimson.parser.Parser2.maybeElement(Unknown Source)
 at org.apache.crimson.parser.Parser2.parseInternal(Unknown Source)
 at org.apache.crimson.parser.Parser2.parse(Unknown Source)
 at org.apache.crimson.parser.XMLReaderImpl.parse(Unknown Source)
 at javax.xml.parsers.SAXParser.parse(Unknown Source)
 at

org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext
.java:226)

 at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:645)
 at org.apache.axis.Message.getSOAPEnvelope(Message.java:424)
 at

org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnderstandChe
cker.java:62)

 at org.apache.axis.client.AxisClient.invoke(AxisClient.java:173)
 at org.apache.axis.client.Call.invokeEngine(Call.java:2719)
 at org.apache.axis.client.Call.invoke(Call.java:2702)
 at org.apache.axis.client.Call.invoke(Call.java:2378)
 at org.apache.axis.client.Call.invoke(Call.java:2301)
 at org.apache.axis.client.Call.invoke(Call.java:1758)
 at test.proxy.HelloStub.sayHello(HelloStub.java:147)
 at test.Client.main(Client.java:23)
Exception in thread "main"

"atlantis" is my computer netbios name. What is this AxisFault? I suspect it may be a problem with deserialization since the returned SOAP reply (captured with TCPMonitor) is:

<soapenv:Envelope

xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";

xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
  <soapenv:Body>
    <soapenv:Fault>
      <faultcode>soapenv:Server.userException</faultcode>
      <faultstring>test.MyException</faultstring>
      <detail>
        <ns1:hostname
xmlns:ns1="http://xml.apache.org/axis/";>atlantis</ns1:hostname>
      </detail>
    </soapenv:Fault>
  </soapenv:Body>
</soapenv:Envelope>

Since MyException carries two Strings (say "string1" and "string2"),
shouldn't it look like <faultstring>test.MyException: string1,
string2</faultstring> or something like that?

When I throws Exception instances (not subclasses) they got serialized

with

<faultstring>java.lang.Exception: message</faultstring> and work. Also
there's no problem with throwing RemoteException.

I'm using the latest Axis 1.2RC2 since Axis 1.1 refused to serialize
Exception subclasses due to the "cause" field of type Throwable that was
added in JVM 1.4 (wich I'm using).

Please help me: I'm completely lost.
Thanks in advance.

--
Lorenzo

Re: AxisFault with custom exception

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