-01 towering building a stage, the primary foundation - Chapter 2 single architecture design and preparation work -2-17 MyBatis reverse database generation tool

Code provided


MyMapper class is provided by the author

to use the configuration file.

Set the package name plus the class name of

the data source

pojo the package name and our actual project is the corresponding

open our project foodie-dev project.

There are com.imooc.pojo packet


mapper generated xml path of

our projects in this folder correspond

in reverse engineering file folder is also the path

mapper package names


generated need to set the table in the database

table corresponding to the database .

You can put all the tables in the database are pasted here

GeneratorDisplay. This class is used to run our xml

parsing, and then carry out mutual step by step operation. Reverse generated.

We just need the right to run this

warning can not control.

File generation

mapper swells into a lot mapper file suffix.

General Mapper inherited the

entity classes generated under pojo package

if the field is exactly the same, it is not in front of this @Column annotation. If the field is underlined in the database, the generated entity class will be changed to the camel, which is inside the java development specification.

Notes also will be displayed.

mapper corresponding xml

as we generated ResultMapper

Copy the generated files to the project in real

例如先拷贝mapper下的mapper类文件。



Ctrl+C在生成的项目里面复制，


实体类的复制

添加引用pom.xml内

api项目的application.yml

在逆向工程里面 复制这个类 过来


foodie-dev-mapper工程内。先创建一个包

然后再复制过来

这样这里的错误提示就没了。

not-empty在做更新操作或者插入的操作会有一些判断，这些判断的时候，会判断某一个属性是否为null，是否为空，

推荐不依赖框架给你追加 不为空，推荐用手写的方式去判断。

identity设置为MySql。数据方言。
4

安装编译，看看当前代码有没有问题。

运行api

以上逆向工具使用完成。

结束