1. Import package mybatis 
(If you do not you can create your own package lib)
(Right-click to select all packages Add as Libray ...)
(Src folder, create a log4j.properties)
2. The establishment of a database and tables
3. The establishment of the entity class
(New Folder main -> Creating Food category)
4. Establish Mapper Interface
5. Establish sql mapping file
(Create config -> mapper -> FoodMapper .id fourth step of the method name is saveFood, parameterType input type: 'main.Food entity class path')
6. Establish sqlMapConfig.xml file
(Create a src directory -> sqlMapConfig.xml)
7. Writing test class
