Introduction of mybatis invalid

Project scenario ：

Tips ： Here is a brief introduction to the background of the project ：

There is ｉｎｖａｌｉｄ　ｓｔａｔｅｍｅｎｔ

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Problem description

Tips ： The problems encountered in the project are described here ：
Main inspection ３ spot ：

Cause analysis ：

Tips ： Fill in the analysis of the problem here ：

One . introduce ＰＯＭ file
Two . Add configuration file ,
3、 ... and . Scan package in program
Check the namespace problem

Solution ：

Tips ： Fill in the specific solution to the problem here ：

Follow the solution