Java exception when invoking web service

Question

I am using JDeveloper 10.1.3.04 to deploy a PL/SQL function as a web service to 10gIAS. I can deploy the service, but when invoking it from the endpoint my SOAP output looks like this:
<?xml version="1.0" encoding="UTF-8" ?>
- <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
- <SOAP-ENV:Body>
- <SOAP-ENV:Fault>
<faultcode>SOAP-ENV:Server.Exception:</faultcode>
<faultstring>java.lang.NullPointerException</faultstring>
<faultactor>/GetAmountContextRoot/MyWebService1</faultactor>
</SOAP-ENV:Fault>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
Deploying what is essentially the same web service to the OC4J instance that comes with JDeveloper, my SOAP returns the expected value:
<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns0="http://devl29ieda/MyWebService2.wsdl/types/"><env:Body><ns0:returnAmountResponseElement><ns0:result>305249</ns0:result></ns0:returnAmountResponseElement></env:Body></env:Envelope>
I believe the problem is within the Java code created by the Web Service Wizard, but I do not know where.
Any help would be greatly appreciated.
Steven

Answer 1

Hi Steven,
You may want to look at the log on the server side to see if you have any hint that may help you track down where the NPE is comming from.
As you are using PL/SQL function, the other think you want to check is that the datasource information are properly defined in both environment.
Hope it helps,
-eric