BUG | The interface returns abnormal data

Problem description:

The abnormal data is returned when testing the interface. This return format is not the return format defined by me.

Solution:

First break the point and find that the targetException is thrown, and the returned exception data should be derived from the exception, and then analyze the source code (comment code method) to locate the problem

The problem lies in this line of code. In the figure, the getSortOrder function is used to obtain the sort_order for comparison and sorting. When checking the database, it is found that the sort_order items are all null, so an exception is thrown

InvocationTargetException (Reflection Exception) of Java Exception Handling - fcyh - Blog Park (cnblogs.com)https://www.cnblogs.com/yjd_hycf_space/p/7765748.html