CodePudding user response:

A null pointer on the code

CodePudding user response:

Newspaper wrong is a problem of DAO layer, DAO layer code is inheritance does not generally have a fault, and see if it is call parameters, or returns null assignment problem

CodePudding user response:

Exception information said very understand, 105 lines of GoodsDaoImpl appeared a null pointer, and see what the object is null, and call the method