创建maven项目: https://blog.youkuaiyun.com/weixin_39935028/article/details/80311019
找到dao-mapper -- setting ---> plugin --> free-mybaits-plugin
setting --> import
创建maven项目: https://blog.youkuaiyun.com/weixin_39935028/article/details/80311019
找到dao-mapper -- setting ---> plugin --> free-mybaits-plugin
setting --> import