SOAP Server in JAVA <-> SOAP Client in C#

Question

I have a problem with a SOAP Server written in JAVA, the project is running as a windows service and not as a webserver (e.g. GLASSFISH). So the problem is, everytime I make a request from a C# .NET client, the JAVA SOAP server is not able to parse the request. The called function gets a NULL value as input parameter.

The communictaion with JAVA clients, SoapUI, aso. works perfectly but the .NET (C#) clients are sending maleformed requests I think. Because the project is already existing and installed a lot of times, I can't develope it in C#. I've read a lot of threads with similar problems, but I couldn't find any solution for my case.

I just wrote some simple test cases to show you the problem in a short way.

JAVA Code:

main.java
//...
Endpoint endpoint = Endpoint.create(new WS());
endpoint.publish("http://0.0.0.0:8081/test"); 
//...

WS.java
//...
@WebService(serviceName = "WS")
@SOAPBinding(style = SOAPBinding.Style.RPC)
public class WS {
    @WebMethod(operationName = "echo")
    public String echo(@WebParam(name = "val") String val) {
        return val;
    }
}

The WSDL:

<definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsp="http://www.w3.org/ns/ws-policy" xmlns:wsp1_2="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://webj/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://webj/" name="WS">
<types/>
<message name="echo">
    <part name="val" type="xsd:string"/>
</message>
<message name="echoResponse">
    <part name="return" type="xsd:string"/>
</message>
<portType name="WS">
    <operation name="echo">
        <input wsam:Action="http://webj/WS/echoRequest" message="tns:echo"/>
        <output wsam:Action="http://webj/WS/echoResponse" message="tns:echoResponse"/>
    </operation>
</portType>
<binding name="WSPortBinding" type="tns:WS">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="rpc"/>
    <operation name="echo">
        <soap:operation soapAction=""/>
        <input>
            <soap:body use="literal" namespace="http://webj/"/>
        </input>
        <output>
            <soap:body use="literal" namespace="http://webj/"/>
        </output>
    </operation>
</binding>
<service name="WS">
    <port name="WSPort" binding="tns:WSPortBinding">
        <soap:address location="http://xxx:8081/test"/>
    </port>
</service>

C# Request

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
    <SOAP-ENV:Header/>
    <s:Body>
        <echo xmlns="http://webj/">
            <val xmlns="http://webj/">TEST</val>
        </echo>
    </s:Body>
</s:Envelope>

JAVA Request

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:std="http://webj/">
    <SOAP-ENV:Header/>
    <SOAP-ENV:Body>
        <std:echo>
            <val>TEST</val>
        </std:echo>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

The problem seems to be the namespave of the parameter "val":

 <echo xmlns="http://webj/">
   <val xmlns="http://webj/">TEST</val>
 </echo>

I've already tested this case in JAVA by adding a namespace to the parameter "val" manually and got the same problem. In C# I've tried with generated WebReferences and ServiceReferences.

(e.g. ServiceReference)

TestService.WSClient proxy = new TestService.WSClient();
String results = proxy.echo("TEST");

Can someone tell me how I can get the JAVA server compatible for .NET requests please? Thanks for help!

Answer 1

Are you using Java JDK 1.8? Because I don't think C# .NET is sending the namespace for the parameter, but it's sending an empty namespace like this:

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
    <SOAP-ENV:Header/>
    <s:Body>
        <echo xmlns="http://webj/">
            <val xmlns="">TEST</val>
        </echo>
    </s:Body>
</s:Envelope>

Java JDK 1.8 contains a JAX-WS version with a bug. The empty namespaces of the requests of your C# client will be parsed completely wrong, just like your C# example above.

Try using the newsest version of >JAX-WS<.

>Here< you can find the description how to implement the libs.