public class MySQLCodeGenerator {
    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    public static void main(String[] args) {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        //设置项目位置，这里直接设置为绝对路径
        String projectPath = "D:\\WorkSpace\\IdeaProjects\\eshop-project\\eshop-user";
        //输出目录
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("三分恶");
        gc.setOpen(false);
        gc.setSwagger2(true);     //实体属性 Swagger2 注解
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/shop_user?characterEncoding=utf-8&allowMultiQueries=true&serverTimezone=GMT%2B8");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("root");
        mpg.setDataSource(dsc);

        //包配置
        PackageConfig pc = new PackageConfig();
        //模块名配置
        //pc.setModuleName(scanner("模块名"));
        pc.setParent("cn.fighter3");
        mpg.setPackageInfo(pc);

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };


        ///策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        //strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
        //【实体】是否为lombok模型
        strategy.setEntityLombokModel(true);
        //生成 @RestController 控制器
        strategy.setRestControllerStyle(true);
        // 公共父类
        //strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
        // 写于父类中的公共字段
        //strategy.setSuperEntityColumns("id");
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix(pc.getModuleName() + "_");
        mpg.setStrategy(strategy);
        mpg.execute();
    }
}

MP的代码生成器支持很多配置，包括基本配置、数据配置、数据库表配置等等。甚至可以自定义模板。具体可以查看：https://mybatis.plus/config/generator-config.html#基本配置

• 生成代码很简单，直接运行代码生成器类，输入表名就行了

• 生成的代码如下：

4、基本业务代码编写

接下来我们简单地在用户服务中编写一个基本的查看和增加的功能。

• 在resource目录下添加配置文件application.yml，写入相关配置：

# 数据源配置
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/shop_user?characterEncoding=utf-8&allowMultiQueries=true&serverTimezone=GMT%2B8
    username: root
    password: root

@SpringBootApplication
@MapperScan("cn.fighter3.mapper")
public class EshopUserApplication {

    public static void main(String[] args) {
        SpringApplication.run(EshopUserApplication.class, args);
    }
}

        <dependency>
            <groupId>cn.fighter3</groupId>
            <artifactId>eshop-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

/**
 * @Author: 三分恶
 * @Date: 2021/5/16
 * @Description: 统一结果返回类
 **/
@Data
@Builder
@AllArgsConstructor
public class CommonResult<T> implements Serializable {

    private static final long serialVersionUID = 1L;

    @Tolerate
    public CommonResult() {
    }

    private Integer code;
    private String message;
    private T data;

    public static CommonResult ok() {
        return CommonResult.builder().code(200).message("请求成功").build();
    }

    public static CommonResult ok(Object data) {
        return CommonResult.builder().code(200).message("请求成功").data(data).build();
    }

    public static CommonResult error(String message) {
        return CommonResult.builder().code(500).message("响应异常").build();
    }

}

/**
 * <p>
 * 用户表 前端控制器
 * </p>
 *
 * @author 三分恶
 * @since 2021-05-16
 */
@RestController
@RequestMapping("/shop-user")
@Api(value = "用户信息接口", tags = "用户接口")
public class ShopUserController {
    @Autowired
    private IShopUserService shopUserService;

    @PostMapping("/user/add")
    @ApiOperation(value = "添加用户接口")
    public CommonResult addUser(@RequestBody ShopUser shopUser) {
        this.shopUserService.save(shopUser);
        return CommonResult.ok();
    }

    @GetMapping("/user/get-by-id")
    @ApiOperation(value = "根据id获取用户信息接口")
    public CommonResult getUserById(@RequestParam Integer id) {
        ShopUser shopUser = this.shopUserService.getById(id);
        return CommonResult.ok(shopUser);
    }

}