[ERROR] Exception occurred while trying to invoke service method login
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
...
这个异常，一般是由于调用Mathod类的invoke()方法，该方法所代表的指定方法抛出异常时，或者调用Constructor类的newInstance()方法，该方法所代表的底层构造方法抛出异常时，由java.lang.reflect.InvocationTargetExceptio异常包装后作为新的异常抛出而产生，默认异常信息是NULL。
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