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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=21929 Null pointer exception with integer parameters in doc/literal Summary: Null pointer exception with integer parameters in doc/literal Product: Axis Version: 1.1 Platform: PC OS/Version: Windows NT/2K Status: NEW Severity: Major Priority: Other Component: Serialization/Deserialization AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Axis Client returns a null pointer exception while integer input parameters are used in a doc/literal style service. The java code for the service is public class addtest { public int returnadd(int a,int b ) { return (a+b); } } The deployment file is <deployment xmlns="http://xml.apache.org/axis/wsdd/"; xmlns:java="http://xml.apache.org/axis/wsdd/providers/java";> <service name="addtest" style="document" > <parameter name="className" value="addtest"/> <parameter name="scope" value="session"/> <parameter name="allowedMethods" value="returnadd"/> </service> </deployment> I generated the stub classes from the wsdl file and WSDL2java tool My client code is public class client1 { public static void main(String args[]) { try { AddtestService service=new AddtestServiceLocator(); Addtest stub=service.getaddtest(new java.net.URL ("http://localhost:8080/axis/services/addtest";)); ((org.apache.axis.client.Stub)stub).setMaintainSession(true); int a=stub.returnadd(2,3); System.out.println("The service returns :"+a); } catch(Exception e) { System.out.println(e.toString()); } } } The error I got is given at the end of this message (It is a null pointer exception) Interestingly I ran some more tests the results of these are 1) This problem does not occur if one uses wrapped style document literal 2) The problem goes away if your returnadd method takes one input Eg public int returnadd(int a) { return a; } Ankit Gupta The Error Stack Trace java.lang.NullPointerException java.lang.NullPointerException at java.lang.reflect.Method.invoke(Native Method) at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.j ava:402) at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider .java:309) at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java: 333) at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrateg y.java:71) at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:150) at org.apache.axis.SimpleChain.invoke(SimpleChain.java:120) at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:481 ) at org.apache.axis.server.AxisServer.invoke(AxisServer.java:323) at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:85 4) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBas e.java:339) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:256) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve .java:246) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java: 2415) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:180) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche rValve.java:171) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:172) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex t.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:22 3) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java :594) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce ssConnection(Http11Protocol.java:392) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java :565) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP ool.java:619) at java.lang.Thread.run(Thread.java:479)
