Right. We use the WSDL to build java from, not the other way round. The
problem is a bug in axis. We're going to write it up when we get the
chance. In the meantime, you will need to decide whether or not to
modify the WSDL.
I will bet that if you look at the XML coming from the server, it is
correct. The problem lies in the de-serialization of the fault. This is
a work-around for that problem.
Veprinsky, Michael wrote:
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
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-----Original Message-----
From: Thom Hehl [mailto:[EMAIL PROTECTED]
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 <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]>
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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