在第一次访问Main - Entitlement - Policy部分时，我收到以下错误：
TID [-1234] [IS] [2015-05-07 11：11：03,046] ERROR - 尝试调用服务方法时发生异常getAllPolicies sun.reflect.NativeMethodAccessorImpl .invoke0（Native Method）sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:60）sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:37）java.lang.reflect.Method.invoke（Method.java:611） org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass（RPCUtil.java:212）org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic（RPCMessageReceiver.java:117)org.apache.axis2.receivers.AbstractInOutMessageReceiver . invokeBusinessLogic（AbstractInOutMessageReceiver.java:40）org.apache.axis2.receivers.AbstractMessageReceiver.receive（AbstractMessageReceiver.java:110）org.apache.axis2.engine.AxisEngine.receive（AxisEngine.java:180)org.apache.axis2 . transport.local.LocalTransportReceiver.processMessage（LocalTransportReceiver.java:169）o rg.apache.axis2.transport.local.LocalTransportReceiver.processMessage（LocalTransportReceiver.java:82）org.wso2.carbon.core.transports.local.CarbonLocalTransportSender.finalizeSendWithToAddress（CarbonLocalTransportSender.java:45）org.apache.axis2.transport . local.LocalTransportSender.invoke（LocalTransportSender.java:77）org.apache.axis2.engine.AxisEngine.send（AxisEngine.java:442）org.apache.axis2.description.OutInAxisOperationClient.send（OutInAxisOperation.java:430）org . apache.axis2.description.OutInAxisOperationClient.executeImpl（OutInAxisOperation.java:225）org.apache.axis2.client.OperationClient.execute（OperationClient.java:149）
与报告类似：see at this forum
在此先感谢您的帮助，如何修复此错误 .