我的Java Web服务工作正常，但突然之间它会抛出以下错误。
请告诉我发生了什么事？什么是解决它的解决方案？
javax.xml.ws.soap.SOAPFaultException: java.lang.reflect.InvocationTargetException
at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(Unknown Source)
at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(Unknown Source)
at $Proxy31.getGPRSConBillData(Unknown Source)
at BillPostingService.postBill(BillPostingService.java:86)
at ManualBillPostingService.postBill(ManualBillPostingService.java:27)
at BatchBillPostingProcessor.postBill(BatchBillPostingProcessor.java:39)
at BatchBillPostingProcessor.run(BatchBillPostingProcessor.java:31)
CNO: 405000863 , Acknowledgement: E , Time millisec: -1347267052687
javax.xml.ws.soap.SOAPFaultException: java.lang.reflect.InvocationTargetException
at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(Unknown Source)
at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(Unknown Source)
at $Proxy31.getGPRSConBillData(Unknown Source)
at BillPostingService.postBill(BillPostingService.java:86)
at ManualBillPostingService.postBill(ManualBillPostingService.java:27)
at BatchBillPostingProcessor.postBill(BatchBillPostingProcessor.java:39)
at BatchBillPostingProcessor.run(BatchBillPostingProcessor.java:31)
javax.xml.ws.soap.SOAPFaultException: java.lang.reflect.InvocationTargetExceptio
nCNO: 405000570 , Acknowledgement: E , Time millisec: -1347267053187
at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(Unknown Source)
at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(Unknown Source)
at $Proxy31.getGPRSConBillData(Unknown Source)
at BillPostingService.postBill(BillPostingService.java:86)
at ManualBillPostingService.postBill(ManualBillPostingService.java:27)
at BatchBillPostingProcessor.postBill(BatchBillPostingProcessor.java:39)