webservice 通过 axis 1.4 调用接口，报错，请大侠们指点下问题在哪里

[吸尘器]

AxisFault
 faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server
 faultSubcode:
 faultString: Server was unable to process request. ---> String reference not
 set to an instance of a String.
Parameter name: s
 faultActor:
 faultNode:
 faultDetail:
        {http://xml.apache.org/axis/}stackTrace:Server was unable to process req
uest. ---> String reference not set to an instance of a String.
Parameter name: s
        at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder
.java:222)
        at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.
java:129)
        at org.apache.axis.encoding.DeserializationContext.endElement(Deserializ
ationContext.java:1087)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endEleme
nt(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanEndElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l$FragmentContentDriver.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(U
nknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next
(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanDocument(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
nknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
nknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown So
urce)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Un
known Source)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.p
arse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at org.apache.axis.encoding.DeserializationContext.parse(Deserialization
Context.java:227)
        at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
        at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
        at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnders
tandChecker.java:62)
        at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
        at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
        at org.apache.axis.client.Call.invoke(Call.java:2767)
        at org.apache.axis.client.Call.invoke(Call.java:2443)
        at org.apache.axis.client.Call.invoke(Call.java:2366)
        at org.apache.axis.client.Call.invoke(Call.java:1812)
        at com.soltoris.sisqp.webservice.client.SisqpToMes.testToMes(SisqpToMes.
java:31)
        at com.soltoris.sisqp.webservice.client.SisqpToMes.main(SisqpToMes.java:
13)

        {http://xml.apache.org/axis/}hostname:TQMS-PRD

Server was unable to process request. ---> String reference not set to an instan
ce of a String.
Parameter name: s
        at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder
.java:222)
        at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.
java:129)
        at org.apache.axis.encoding.DeserializationContext.endElement(Deserializ
ationContext.java:1087)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endEleme
nt(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanEndElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l$FragmentContentDriver.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(U
nknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next
(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanDocument(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
nknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
nknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown So
urce)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Un
known Source)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.p
arse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at org.apache.axis.encoding.DeserializationContext.parse(Deserialization
Context.java:227)
        at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
        at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
        at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnders
tandChecker.java:62)
        at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
        at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
        at org.apache.axis.client.Call.invoke(Call.java:2767)
        at org.apache.axis.client.Call.invoke(Call.java:2443)
        at org.apache.axis.client.Call.invoke(Call.java:2366)
        at org.apache.axis.client.Call.invoke(Call.java:1812)
        at com.soltoris.sisqp.webservice.client.SisqpToMes.testToMes(SisqpToMes.
java:31)
        at com.soltoris.sisqp.webservice.client.SisqpToMes.main(SisqpToMes.java:
13)

[吸尘器]

沉了

[吸尘器]

通过不懈努力终于解决了，调用webservice的方式有点局限，以以下方式调用不会报错

final Service service = new Service();
        try {
            final Call call = (Call) service.createCall();

            OperationDesc oper;
            ParameterDesc param;
            oper = new OperationDesc();
            oper.setName("DeviationReceive");
            param =
                    new ParameterDesc(new QName("http://www.hitachi.com/HITPHAMS", "jsonStr"), ParameterDesc.IN,
                            new QName("http://www.w3.org/2001/XMLSchema", "string"), String.class, false, false);
            // param.setOmittable(true);
            oper.addParameter(param);
            oper.setReturnType(new QName("http://www.w3.org/2001/XMLSchema", "string"));
            // oper.setReturnClass(String.class);
            // oper.setReturnQName(new QName("http://www.hitachi.com/HITPHAMS", "DeviationReceiveResult"));
            call.setOperation(oper);

            call.setTargetEndpointAddress(endpoint);
            call.setOperationName(new QName("http://www.hitachi.com/HITPHAMS", "DeviationReceive"));
            call.setSOAPActionURI("http://www.hitachi.com/HITPHAMS/DeviationReceive");
            call.setUseSOAPAction(true);

            final Object result = call.invoke(new Object[] {xmlStr});
            System.out.println(result);
        } catch (final Exception e) {
            e.printStackTrace();
        }

[吸尘器]

没人遇到过吗，或者我的问题不清楚需要补充什么。