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From "Veprinsky, Michael" <Michael.Veprin...@dig.com>
Subject RE: [SPAM] - Re: [SPAM] - Re: Problems getting user exceptions to work - Found word(s) check out in the Text body - Found word(s) check out in the subject
Date Thu, 06 Apr 2006 03:07:04 GMT
Hello!
I decided to piggy-back on this thread... I am having similar problems.

Thom,
What did you mean? I suppose recommend changing WSDL definition but a)
my WSDL is auto-published so I can't really change it and b) even if I
do, it does not change the XML that server generates and that is totally
language-specific which kinda violates the purpose. Or did you mean
something else?

I am using Axis 1.3. I have following questions:
1) Is there a way to set server to use SOAP 1.2 (RTFMs are welcome, just
tell where)?
2) Is there a way to specify custom values for faultcode/faultstring?
Best I could get was my exception being serialized into XML under
details but then I have to process it as XML :-\
3) Overall, I need to publish a web service that is going to be used
from different platforms. Is my best bet to just give up faults
altogether and use some custom base result structure with generic error
passing engine? Any recommendations (again, RTFMs are welcome)

I do not expect much success since the envelope XSD itself is pretty
limiting (http://schemas.xmlsoap.org/soap/envelope, toward the end),
it's just those two fields and freeform XML "details". SOAP 1.2 looks a
little better but without documentation it did not help much either.

Any recommendations/insights are welcome.
Thank you,
-Michael

___________________
Tell a man there are 300 billion stars in the universe and he'll believe
Tell him a bench has wet paint on it and he'll have to touch to be sure
                          -- /usr/bin/fortune


-----Original Message-----
From: Thom Hehl [mailto:hehlt@asset.com] 
Sent: Thursday, March 30, 2006 1:47 PM
To: axis-user@ws.apache.org
Subject: Re: [SPAM] - Re: [SPAM] - Re: Problems getting user exceptions
to work - Found word(s) check out in the Text body - Found word(s) check
out in the subject


Have a look at this:

Give him This:
_____original type def from imported xsd___________________
  <complexType name="InvalidDateException">
   <sequence/>
  </complexType>

_____also needed in wsdl file___________
    <wsdl:message name="InvalidDateExceptionFault">
        <wsdl:part name="InvalidDateExceptionType" 
type="ns:InvalidDateException"/>
    </wsdl:message>

*(in the portType operation definition for a method throwing a fault)*
<wsdl:fault name="InvalidDateExceptionFault" 
message="ns:InvalidDateExceptionFault"/>

*(in the binding operation definintion for a method throwing a fault)*
<wsdl:fault name="InvalidDateExceptionFault">
    <soap:fault use="literal" name="InvalidDateExceptionFault"/>
</wsdl:fault>



Jack Lund wrote:

> See, I'm not really sure. The JAX/RPC spec is kinda hazy on how
> exceptions are handled, and how the soap fault maps to an exception. 
> Here's what I'm seeing come back from the server:
>
> <?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.userException</faultcode>
>        <faultstring>com.foobar.ecommerce.beans.InvalidDateException: A

> valid date must be specified in the form of MM/DD/YYYY.</faultstring>
>        <detail>
>            <com.foobar.ecommerce.beans.InvalidDateException 
> xsi:type="ns1:InvalidDateException" xmlns:ns1="urn:ClaimsData"/>
>            <ns2:hostname 
>
xmlns:ns2="http://xml.apache.org/axis/">staportal01.stratarc.net</ns2:ho
stname> 
>
>        </detail>
>        </soapenv:Fault>
>    </soapenv:Body>
> </soapenv:Envelope>
>
> And here's what the corresponding part of the WSDL looks like:
>
> <wsdl:types>
>  <schema targetNamespace="urn:ClaimsData"
> xmlns="http://www.w3.org/2001/XMLSchema">
>   <import namespace="http://hib.ecommerce.foobar.com"/>
>   <import 
> namespace="http://portal01.foobar.com:8080/axis/services/ClaimsData"/>
>   <import namespace="http://dao.ecommerce.foobar.com"/>
>   <import namespace="http://beans.ecommerce.foobar.com"/>
>   <import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
>   <complexType name="Claim">
>    <sequence>
>     <element name="amount" type="xsd:double"/>
>     <element name="claimDate" nillable="true" type="xsd:dateTime"/>
>     <element name="claimDesc" nillable="true" type="xsd:string"/>
>     <element name="claimID" type="xsd:long"/>
>     <element name="claimNumber" nillable="true" type="xsd:string"/>
>     <element name="claimStatus" nillable="true" type="xsd:string"/>
>     <element name="claimStatusName" nillable="true"
type="xsd:string"/>
>     <element name="formattedDate" nillable="true" type="xsd:string"/>
>     <element name="policy" nillable="true" type="xsd:anyType"/>
>     <element name="policyHolder" nillable="true" type="xsd:string"/>
>     <element name="provider" nillable="true" type="xsd:anyType"/>
>    </sequence>
>   </complexType>
>   <complexType name="InvalidDateException">
>    <sequence/>
>   </complexType>
>  </schema>
>
> What makes me think the serialization isn't working is that the
> definition of the InvalidDateException is pretty much empty. However, 
> it also looks like there's enough information in the passed soap 
> message to be able to deserialize the exception properly, so I don't 
> really know what's going on here.
>
> Do you (or anybody) have an example of what a "good" soap fault mapped
> from a java exception looks like?
>
> Thanks.
>
> -Jack
>
>
> Thom Hehl wrote:
>
>> Hmmm. Check your SOAP messae. Our problem is that we're sending the
>> correct data from the server and the error happens during 
>> deserialization. If that's not it, it's a different problem.
>>
>> Jack Lund wrote:
>>
>>> Thanks! I'd love to hear the workaround - I've tried everything I
>>> can. It looks like the problem is that the server side doesn't 
>>> really know how to serialize the exception, even though it should.
>>>
>>> -Jack
>>>
>>> Thom Hehl wrote:
>>>
>>>> We had EXACTLY the same problem! We just found it and found a
>>>> work-around, but believe this to be a bug in AXIS that should be 
>>>> fixed. The guy on our team that found it was going to write 
>>>> something up for the list. I'll ask him to step this up a bit as it

>>>> would be of benefit to you.
>>>>
>>>> Jack Lund wrote:
>>>>
>>>>> Yeah, I can see that that would be easier. Unfortunately, I have
>>>>> no control over the exceptions being thrown - I just need the 
>>>>> client-side to be able to catch them *as* the exceptions that are 
>>>>> originally thrown. I also am doing dynamic proxying rather than 
>>>>> stubs/skeletons, so it makes it that more complicated.
>>>>>
>>>>> >From the debugging I've been able to do, it looks like the fault
>>>>> coming across contains the fully-qualified package name of the
>>>>> exception class, but for some reason on the client side it's not 
>>>>> creating the exception. Since this is an area where there's 
>>>>> practically no documentation, I'm finding myself pretty much 
>>>>> randomly trying different things and seeing if they work.
>>>>>
>>>>> The user's guide is really vague about this subject:
>>>>>
>>>>> "If a method is marked as throwing an Exception that is not an
>>>>> instance or a subclass of java.rmi.RemoteException, then things 
>>>>> are subtly different. The exception is no longer a SOAP Fault, but

>>>>> described as a wsdl:fault in the WSDL of the method. According to 
>>>>> the JAX-RPC specification, your subclass of Exception must have 
>>>>> accessor methods to access all the fields in the object to be 
>>>>> marshalled /and/ a constructor that takes as parameters all the 
>>>>> same fields (i.e, arguments of the same name and type). This is a 
>>>>> kind of immutable variant of a normal JavaBean 
>>>>> <http://java.sun.com/products/javabeans>. The fields in the object

>>>>> must be of the datatypes that can be reliably mapped into WSDL.
>>>>>
>>>>> If your exception meets this specification, then the WSDL
>>>>> describing the method will describe the exception too, enabling 
>>>>> callers to create stub implementations of the exception, 
>>>>> regardless of platform."
>>>>>
>>>>> I was kind of hoping someone else out there would have had some
>>>>> experience with getting this to work.
>>>>>
>>>>> -Jack
>>>>>
>>>>> Jarmo Doc wrote:
>>>>>
>>>>>> I have an Axis client stub which was generated from WSDL. *All*
>>>>>> of the client-side user-defined exceptions extend 
>>>>>> org.apache.axis.AxisFault.
>>>>>>
>>>>>> The equivalent exceptions at the server also extend
>>>>>> org.apache.axis.AxisFault, rather than Exception.
>>>>>>
>>>>>> This is a decidedly dodgy area, imo, especially when it comes to
>>>>>> interop with non-Axis clients.
>>>>>>
>>>>>>
>>>>>>> From: Jack Lund <jack.lund@stagrp.com>
>>>>>>> Reply-To: axis-user@ws.apache.org
>>>>>>> To: axis-user@ws.apache.org
>>>>>>> Subject: RE: Problems getting user exceptions to work
>>>>>>> Date: Wed, 29 Mar 2006 14:51:47 -0600
>>>>>>>
>>>>>>> Nope, didn't work. Wouldn't think it would - AxisFault isn't
a
>>>>>>> subclass of InvalidDateException.
>>>>>>>
>>>>>>> -Jack
>>>>>>>
>>>>>>> Jarmo Doc wrote:
>>>>>>>
>>>>>>>> Try doing this:
>>>>>>>>
>>>>>>>> catch (AxisFault ex)
>>>>>>>> {
>>>>>>>> if (ex instanceof InvalidDateException)
>>>>>>>> {
>>>>>>>> InvalidDateException myex = (InvalidDateException)ex; //
deal 
>>>>>>>> with myex here }
>>>>>>>> // deal with others here
>>>>>>>> }
>>>>>>>>
>>>>>>>>
>>>>>>>>> From: Jack Lund <jack.lund@stagrp.com>
>>>>>>>>> Reply-To: axis-user@ws.apache.org
>>>>>>>>> To: axis-user@ws.apache.org
>>>>>>>>> Subject: Problems getting user exceptions to work
>>>>>>>>> Date: Wed, 29 Mar 2006 12:21:33 -0600
>>>>>>>>>
>>>>>>>>> Hi. I'm using axis 1.2.1, and I'm trying to get the exceptions
>>>>>>>>> sent by my service thrown to the client. For instance,
my 
>>>>>>>>> service can throw an "InvalidDateException" exception,
which 
>>>>>>>>> is a subclass of java.lang.Exception, and I want the
client 
>>>>>>>>> code to get that exception. What little is said on the
axis 
>>>>>>>>> website about this implies that it should "just work",
but it 
>>>>>>>>> doesn't seem to - what I get on the other side is an
AxisFault

>>>>>>>>> with the message string from my exception embedded inside.
>>>>>>>>>
>>>>>>>>> Is there something special I have to do, on either side,
to
>>>>>>>>> get this to work?
>>>>>>>>>
>>>>>>>>> Thanks.
>>>>>>>>>
>>>>>>>>> -Jack
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________________________
>>>>>>>> __
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>>>>>>>>
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>>>>>>
>>>>
>>>
>>
>

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