Hi, I am developing a client with dynamic loading. So far, when I do the invocation, it works properly. However, if I invoke the same service several time within short period (let say , 10 seconds), I might get exception of "object is not an instance of declaring class".
If I trace the message being sent in/out, both are correct. Seems like the client could not serialize/deserialize it in a short period. Has anyone encountered this kind of problem? Appreciate if someone can explain what caused this exception. Thanks... Herbert ============================================================== <12:34:18:811> [DEBUG] [test.ws.consumer.rt.axis.invoker.RPCServiceInvoker]: inputMsg: <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><ns1:get Addresses soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xmlns:ns1="http://DefaultNamespace"/></soapenv:Body></soapenv:Envelope> <12:34:18:839> [DEBUG] [test.ws.consumer.rt.axis.invoker.RPCServiceInvoker]: outputMsg: <?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><ns1:get AddressesResponse soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xmlns:ns1="http://DefaultNamespace";><getAddressesReturn soapenc:arrayType="ns2:Address[2]" xsi:type="ns3:ArrayOf_tns1_Address" xmlns:ns2="http://object.prototype"; xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"; xmlns:ns3="http://test2003:8080/prototype/TestService.jws";><item href="#id0"/><item href="#id1"/></getAddressesReturn></ns1:getAddressesResponse><multiRef id="id0" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="ns4:Address" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"; xmlns:ns4="http://object.prototype";><phones soapenc:arrayType="ns4:Phone[2]" xsi:type="soapenc:Array"><item href="#id2"/><item href="#id3"/></phones><streetName xsi:type="soapenc:string">Street A</streetName><streetNo xsi:type="soapenc:string">10</streetNo><zip href="#id4"/></multiRef><multiRef id="id1" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="ns5:Address" xmlns:ns5="http://object.prototype"; xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";><phones soapenc:arrayType="ns5:Phone[2]" xsi:type="soapenc:Array"><item href="#id5"/><item href="#id6"/></phones><streetName xsi:type="soapenc:string">Street A</streetName><streetNo xsi:type="soapenc:string">10</streetNo><zip href="#id7"/></multiRef><multiRef id="id5" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="ns6:Phone" xmlns:ns6="http://object.prototype"; xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";><areaCode href="#id8"/><phoneNo xsi:type="soapenc:string">12993456</phoneNo></multiRef><multiRef id="id4" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="xsd:int" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>90</multiRef><mult iRef id="id3" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="ns7:Phone" xmlns:ns7="http://object.prototype"; xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";><areaCode href="#id9"/><phoneNo xsi:type="soapenc:string">654321</phoneNo></multiRef><multiRef id="id2" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="ns8:Phone" xmlns:ns8="http://object.prototype"; xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";><areaCode href="#id10"/><phoneNo xsi:type="soapenc:string">123456</phoneNo></multiRef><multiRef id="id6" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="ns9:Phone" xmlns:ns9="http://object.prototype"; xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";><areaCode href="#id11"/><phoneNo xsi:type="soapenc:string">65438821</phoneNo></multiRef><multiRef id="id7" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="xsd:int" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>90</multiRef><mult iRef id="id11" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="xsd:int" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>5</multiRef><multi Ref id="id8" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="xsd:int" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>4</multiRef><multi Ref id="id10" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="xsd:int" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>2</multiRef><multi Ref id="id9" soapenc:root="0" soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xsi:type="xsd:int" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>3</multiRef></soap env:Body></soapenv:Envelope> <12:34:18:917> [DEBUG] [test.ws.consumer.rt.axis.invoker.RPCServiceInvoker]: response size: 4022 <12:34:18:919> [ERROR] [test.ws.consumer.rt.axis.invoker.RPCServiceInvoker]: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:25) at java.lang.reflect.Method.invoke(Method.java:324) at test.ws.consumer.rt.axis.invoker.AXISServiceInvoker.invoke(Unknown Source) at test.ws.consumer.proxy.WSProxyImpl.invoke(Unknown Source) at test.ws.consumer.proxy.RemoteConsumer.invoke(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:25) at java.lang.reflect.Method.invoke(Method.java:324) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261) at sun.rmi.transport.Transport$1.run(Transport.java:148) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:144) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:7 01) at java.lang.Thread.run(Thread.java:534) Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class at org.apache.axis.AxisFault.makeFault(AxisFault.java:101) at org.apache.axis.client.Call.invoke(Call.java:2423) at org.apache.axis.client.Call.invoke(Call.java:2319) at org.apache.axis.client.Call.invoke(Call.java:1776) at ws_testService2.TestServiceSoapBindingStub.getAddresses(TestServiceSoapBindi ngStub.java:453) ... 18 more Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class at org.apache.axis.encoding.ser.BeanPropertyTarget.set(BeanPropertyTarget.java: 142) at org.apache.axis.encoding.DeserializerImpl.valueComplete(DeserializerImpl.jav a:255) at org.apache.axis.encoding.DeserializerImpl.endElement(DeserializerImpl.java:5 15) at org.apache.axis.encoding.DeserializationContext.endElement(DeserializationCo ntext.java:1077) at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:165) at org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java: 1138) at org.apache.axis.encoding.DeserializerImpl.startElement(DeserializerImpl.java :375) at org.apache.axis.encoding.DeserializationContext.startElement(Deserialization Context.java:1038) at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:159) at org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java: 1138) at org.apache.axis.encoding.DeserializerImpl.startElement(DeserializerImpl.java :375) at org.apache.axis.encoding.DeserializationContext.startElement(Deserialization Context.java:1038) at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:159) at org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java: 1138) at org.apache.axis.encoding.DeserializerImpl.startElement(DeserializerImpl.java :375) at org.apache.axis.encoding.DeserializationContext.startElement(Deserialization Context.java:1038) at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:159) at org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java: 1138) at org.apache.axis.message.RPCElement.deserialize(RPCElement.java:308) at org.apache.axis.message.RPCElement.getParams(RPCElement.java:342) at org.apache.axis.client.Call.invoke(Call.java:2420) ... 21 more <12:34:18:980> [ERROR] [test.ws.consumer.rt.axis.invoker.RPCServiceInvoker]: java.lang.NullPointerException at test.ws.consumer.rt.axis.invoker.AXISServiceInvoker.invoke(Unknown Source) at test.ws.consumer.proxy.WSProxyImpl.invoke(Unknown Source) at test.ws.consumer.proxy.RemoteConsumer.invoke(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:25) at java.lang.reflect.Method.invoke(Method.java:324) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261) at sun.rmi.transport.Transport$1.run(Transport.java:148) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:144) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:7 01) at java.lang.Thread.run(Thread.java:534)
