Empty SOAP Body in Input Message Causes NPE on Axis 1.3

Ted Jones Mon, 12 Jun 2006 07:24:25 -0700

I am executing a web service with no input parameters so the SOAP body is empty like so:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body/>
</soapenv:Envelope>

I am getting an NPE returned before I even hit my Web Service, so I am assuming the exception is happening in Axis somewhere (I'm not seeing a stack trace). Here is the response:

<?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>java.lang.NullPointerException</faultstring>
   <detail/>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>

I get this using Coral and Systinet as my clients. When I generate an Axis client, I do not get an NPE but I get a node added to my body with the operation name in it (which I don't want to see as my logic depends on the body to be empty when no inputs are provided).

Here is the WSDL:

<definitions name="widgetServices" targetNamespace="http://com.widgets/test"
    xmlns="http://schemas.xmlsoap.org/wsdl/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns:tns="http://com.widgets/test"
    xmlns:schema1="http://www.widgets.com/bqt_Output">
   <types>
      <xsd:schema targetNamespace="http://com.widgets/test" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
         <xsd:import namespace="http://www.widgets.com/bqt_Output" schemaLocation="http://chicago:8080/test/servlet/ArtifactDocumentService/test/bqt_Output.xsd" />
      </xsd:schema>
   </types>
   <message name="bqt_SMALLA_getSMALLA_Input">
      <documentation>Input message for operation bqt_SMALLA/getSMALLA.</documentation>
   </message>
   <message name="bqt_SMALLA_getSMALLA_SMALLA_OutputMsg">
      <documentation>Output message for operation bqt_SMALLA/getSMALLA.</documentation>
      <part name="bqt_SMALLA_getSMALLA_SMALLA_OutputMsg" element="schema1:SMALLA_Output" />
   </message>
   <portType name="bqt_SMALLA">
      <operation name="getSMALLA">
         <input name="Input" message="tns:bqt_SMALLA_getSMALLA_Input" />
         <output name="SMALLA_OutputMsg" message="tns:bqt_SMALLA_getSMALLA_SMALLA_OutputMsg" />
      </operation>
   </portType>
   <binding name="bqt_SMALLA" type="tns:bqt_SMALLA">
      <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" />
      <operation name="getSMALLA">
         <soap:operation style="document" soapAction="bqt_WS.bqt_SMALLA.getSMALLA" />
         <input name="Input">
            <soap:body use="literal" />
         </input>
         <output name="SMALLA_OutputMsg">
            <soap:body use="literal" />
         </output>
      </operation>
   </binding>
   <service name="widgetsDataServices">
      <port name="bqt_SMALLA" binding="tns:bqt_SMALLA">
         <soap:address location="http://chicago:8080/test/services/service" />
      </port>
   </service>
</definitions>

Here is the WSDD:

<deployment name="test" xmlns="http://xml.apache.org/axis/wsdd/" 
            xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"
            xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance">
  <!-- note that either style="message" OR provider="java:MSG" both work -->
  <service name="service" provider="java:MSG">   
    <parameter name="className" value="com.widgets.soap.lds.service.DataServiceWebService" />
    <parameter name="allowedMethods" value="executeDataservice" />
  </service>
</deployment>

Any help would be greatly appreciated!

Thanks,

Ted Jones

Empty SOAP Body in Input Message Causes NPE on Axis 1.3

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