HTTP The server encountered an internal error () that prevented it from fulfilling this request.

在配置好從一個action跳轉到另一個action後，查詢出現了問題，保存action是可以運行的，而跳轉到查詢action就報錯：

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HTTP Status 500 -

---

 

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.lang.NullPointerException
	com.hycrm.action.user.ProductSearchAction.execute(ProductSearchAction.java:170)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodA