Re: Can't invoke method with multiple arguments

Linus Kamb Thu, 10 Feb 2005 13:51:47 -0800

I confess to being perpetually befuddled by the seeming inconsistencies between axis wsdd "style" terminology versus web-service / SOAP "style".

So how does the below requirement fit with the axis "Message style" service (which I thought of as some sort of "pure" doc/lit) which allows the following service method signatures (from axis user guide)?

public Element [] method(Element [] bodies);
public SOAPBodyElement [] method (SOAPBodyElement [] bodies);
public Document method(Document body);
public void method(SOAPEnvelope req, SOAPEnvelope resp);

That seems to say to me that document/literal can have several Elements in the body.

I implemented a web service that accepted several Element objects. It worked fine, except that I had to go through the whole call.invoke() mumbo-jumbo on the client side.

Thanks,
Linus

On Feb 10, 2005, at 12:36 PM, Anne Thomas Manes wrote:

This is not a bug -- this is a requirement of SOAP. The child element
of the SOAP body indicates to the SOAP processor how to handle the
request. This child element must provide a unique signature so that
the SOAP processor can figure it out. The SOAP specification doesn't
specify how to process more than one child element in the SOAP body.
The WS-I Basic Profile has clarified this point and specified a rule
that says that the SOAP body must contain at most one child element.
When using document/literal, you must wrap your parameters with a
single element, and this element must be used as the one and only
child element of the SOAP body. If you use the wrapped style, Axis
will do this for you automatically.
- Anne
On Tue, 8 Feb 2005 17:17:01 +0100, David Werner <[EMAIL PROTECTED]> wrote:
Hallo Ioan,
I'm quite stunned by this bug! Handling multiple parameters should be a basic functionality. In any case, many thanks for your reply! :-)
Ciao, Dave
-----Original Message-----
From: Ioan Berbece [mailto:[EMAIL PROTECTED]
Sent: Monday, February 07, 2005 8:50 PM
To: [EMAIL PROTECTED]
Subject: RE: Can't invoke method with multiple arguments
Hi Dave,
Last time I checked Axis 1.1 and Axis 1.2 RC2 didn't handle multiple message parts in a doc/lit web service. Take a look at this bug: http://issues.apache.org/jira/browse/AXIS-621 which has an attachment for an attempted fix in Call.java (client side). I also attempted a fix for the server side in RPCProvider.java, but I'm not sure whether the fix is a proper one (although the functional tests pass with the fix in place in Axis 1.2 RC2). I have to say here that I'm a bit disappointed to see that this bug (and I believe there are others related) hasn't received the attention it requires (right now it seems it spans two versions: 1.1 and 1.2 - not sure what the story is in Axis 2.0). If you want my proposed fix email me privately.
Thanks,
IB
-----Original Message-----
From: David Werner [mailto:[EMAIL PROTECTED]
Sent: February 7, 2005 1:50 PM
To: [EMAIL PROTECTED]
Subject: RE: Can't invoke method with multiple arguments
Hallo,
I also tried to invoke the same service with a Call object and
explicitly
set the type of the parameters. This time I got anothter exception:
"org.xml.sax.SAXException: SimpleDeserializer encountered a child
element,
which is NOT expected, in something it was trying to deserialize."
Does anyone have an idea ...?
Bye, Dave
--------------------
 client code
--------------------
public class TestClient2
{
  public static void main(String [] args) {
    try {
       String endpoint =
         "http://localhost:1234/axis1.2rc2/services/test";;
       Service  service = new Service();
       Call     call    = (Call) service.createCall();
       call.setTargetEndpointAddress( new java.net.URL(endpoint) );
       call.setOperationName(new QName("urn:TestNS", "printLongs") );
call.addParameter("in6", org.apache.axis.Constants.XSD_LONG, javax.xml.rpc.ParameterMode.IN); call.addParameter("in7", org.apache.axis.Constants.XSD_LONG, javax.xml.rpc.ParameterMode.IN); call.setReturnType(org.apache.axis.Constants.XSD_STRING); String response = (String) call.invoke( new Object[] { 1L, 1L } ); System.out.println(response); } catch (Exception e) { System.err.println(e.toString()); } } }
--------------------
 exception
--------------------
AxisFault faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException faultSubcode: faultString: org.xml.sax.SAXException: SimpleDeserializer encountered a child element, which is NOT expected, in something it was trying to deserialize. faultActor: faultNode: faultDetail:

{http://xml.apache.org/axis/}stackTrace:org.xml.sax.SAXException: SimpleDeserializer encountered a child element, which is NOT expected, in something it was trying to deserialize. at org.apache.axis.encoding.ser.SimpleDeserializer.onStartChild(SimpleDe ser iali zer.java:143) at org.apache.axis.encoding.DeserializationContext.startElement(Deserial iza tion Context.java:1031) at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.ja va: 165) at org.apache.axis.message.MessageElement.publishToHandler(MessageElemen t.j ava: 1140) at org.apache.axis.message.RPCElement.deserialize(RPCElement.java:238) at org.apache.axis.message.RPCElement.getParams(RPCElement.java:386) at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider .ja va:1 48) at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java: 319 ) at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrateg y.j ava: 32) at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118) at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83) at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java: 450) at org.apache.axis.server.AxisServer.invoke(AxisServer.java:285) at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java: 653) at javax.servlet.http.HttpServlet.service(HttpServlet.java:763) at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBas e.j ava: 301) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) ....
-----Original Message-----
From: David Werner [mailto:[EMAIL PROTECTED]
Sent: Monday, February 07, 2005 3:35 PM
To: [EMAIL PROTECTED] Apache. Org
Subject: Can't invoke method with multiple arguments
Hi,
I haven't realized the whole problem, when I submitted the mail
with subject
'Problem with deserealizing boolean'. In fact, I can't invoke any
method
with more than a single argument, independent of the arguments'
(simple)
type! A java.lang.IllegalArgumentException is thrown, because
only the first
value can be deseserialized:
"Tried to invoke method public java.lang.String
test.server.TestSoapBindingImpl.printLongs(long,long) with arguments
java.lang.Long,null. The arguments do not match the signature."
Here's an example of a simple web service, that takes two longs and
should
return a string.
At the end of the mail I copied a part of Axis' log file, where only
the
first argument of printLongs is properly converted before the
exception is
thrown.
I would be really glad, if someone could give me a hint of what I'm
doing
wrong. ;-)
BTW, I'm using Axis 1.2RC2, Tomcat 5.0.19 and JDK 1.5 on Win XP.
Bye, Dave
-------------------------
 service implementation
------------------------
public class TestSoapBindingImpl implements test.server.Test{
  public String printLongs(long long_1, long long_2){
    return "long_1 = " +long_1 +", long_2 = " +long_2;
  }
}
--------------------
 client
--------------------
public class TestClient {
  public static void main (String[] args) throws Exception {
    TestService service = new TestServiceLocator();
    Test testProxy = service.gettest();
    long longVal = 1L;
    response = testProxy.printLongs(longVal, longVal);
    System.out.println(response);
  }
}
--------------------
 SOAP messsage
--------------------
<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>
      <in6 xmlns="urn:TestNS">1</in6>
      <in7 xmlns="urn:TestNS">1</in7>
   </soapenv:Body>
</soapenv:Envelope>
----------------- Axis' log file ----------------- ... 17555 org.apache.axis.message.SAXOutputter - SAXOutputter.startElement ['urn:TestNS' in6] 17555 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(startElem00) 17555 org.apache.axis.encoding.SerializationContext - Start element [urn:TestNS]:in6 17555 org.apache.axis.message.SAXOutputter - SAXOutputter.characters ['1'] 17766 org.apache.axis.message.SAXOutputter - SAXOutputter.endElement ['urn:TestNS' in6] 17766 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(endElem00) 17766 org.apache.axis.encoding.SerializationContext - End element in6 17766 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(empty00) 17766 org.apache.axis.utils.NSStack - NSPop (empty) 17766 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(bodyIs00) 17766 org.apache.axis.providers.java.RPCProvider - body is <in6 xmlns="urn:TestNS">1</in6> 17766 org.apache.axis.i18n.ProjectResourceBundle -
org.apache.axis.i18n.resource::handleGetObject(pushHandler00)
17766  org.apache.axis.encoding.DeserializationContext
        - Pushing handler [EMAIL PROTECTED]
17766  org.apache.axis.encoding.DeserializationContext
        - Enter: DeserializationContext::startPrefixMapping(,
urn:TestNS)
17766 org.apache.axis.utils.NSStack - NSPush (32) 17766 org.apache.axis.utils.NSStack - NSPush (32) 17766 org.apache.axis.encoding.DeserializationContext - Exit: DeserializationContext::startPrefixMapping() 17766 org.apache.axis.encoding.DeserializationContext - Enter: DeserializationContext::startElement(urn:TestNS, in6) 17766 org.apache.axis.message.RPCHandler - Enter: RPCHandler.onStartChild() 17766 org.apache.axis.i18n.ProjectResourceBundle -
org.apache.axis.i18n.resource::handleGetObject(typeFromAttr00)
17766  org.apache.axis.message.RPCHandler
        - Type from attributes is:  null
17876  org.apache.axis.message.RPCHandler
        - Exit: RPCHandler.onStartChild()
17886  org.apache.axis.i18n.ProjectResourceBundle
        -
org.apache.axis.i18n.resource::handleGetObject(pushHandler00)
17886 org.apache.axis.encoding.DeserializationContext - Pushing handler [EMAIL PROTECTED] 17886 org.apache.axis.encoding.DeserializationContext - Exit: DeserializationContext::startElement() 17886 org.apache.axis.encoding.DeserializationContext - Enter: DeserializationContext::endElement(urn:TestNS, in6) 17886 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(popHandler00) 17886 org.apache.axis.encoding.DeserializationContext - Popping handler [EMAIL PROTECTED] 17886 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(setValueInTarget00) 17886 org.apache.axis.encoding.DeserializerImpl - Set value 1 in target [EMAIL PROTECTED] 17886 org.apache.axis.i18n.ProjectResourceBundle - org.apache.axis.i18n.resource::handleGetObject(empty00) 17886 org.apache.axis.utils.NSStack - NSPop (empty) 17886 org.apache.axis.encoding.DeserializationContext - Popped element stack to
org.apache.axis.message.SOAPBody:Body
17886  org.apache.axis.encoding.DeserializationContext
        - Exit: DeserializationContext::endElement()
17886  org.apache.axis.i18n.ProjectResourceBundle
        - org.apache.axis.i18n.resource::handleGetObject(convert00)
17886  org.apache.axis.utils.JavaUtils
        - Trying to convert java.lang.Long to long
17886  org.apache.axis.i18n.ProjectResourceBundle
        - org.apache.axis.i18n.resource::handleGetObject(value00)
17886  org.apache.axis.providers.java.RPCProvider
        -   value:  1
17886  org.apache.axis.i18n.ProjectResourceBundle
        -
org.apache.axis.i18n.resource::handleGetObject(dispatchIAE00)
17986  org.apache.axis.providers.java.RPCProvider
        - Tried to invoke method public java.lang.String
test.server.TestSoapBindingImpl.printLongs(long,long) with arguments
java.lang.Long,null.  The arguments do not match the signature.
java.lang.IllegalArgumentException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorIm
pl.java:39
)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAc
cessorImpl
.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at
org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvide
r.java:384
)
      at
org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvi
der.java:2
81)
    at
org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java: 319 )
at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStra tegy.java: 32) at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118) at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83) at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java: 450) at org.apache.axis.server.AxisServer.invoke(AxisServer.java:285) at

org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java: 653)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
    at
org.apache.axis.transport.http.AxisServletBase.service(AxisServlet
Base.java:
301)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
  ...

Linus Kamb
[EMAIL PROTECTED]
(206) 547-0393 x106

Re: Can't invoke method with multiple arguments

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