1.POM依赖引入

//mp核心文件
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.5.1</version>
</dependency>
//mp生成器依赖
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
    <version>3.5.1</version>
</dependency>
//mp默认模板依赖，默认velocity模板，也可framemark模板
<dependency>
    <groupId>org.apache.velocity</groupId>
    <artifactId>velocity</artifactId>
    <version>1.7</version>
</dependency>

2.代码生成器开始类

package com.ge.mp.utils;

import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.OutputFile;


import java.util.Collections;

/**
 * mp代码生成器
 * by 老土鹅
 * @since 2022-03-26
 */
public class CodeGenerator {

    public static void main(String[] args) {
        generate();
    }

    private static void generate() {
        FastAutoGenerator.create("jdbc:mysql://localhost:3306/qing?serverTimezone=GMT%2b8", "root", "123456")
                .globalConfig(builder -> {
                    builder.author("老土鹅") // 设置作者
//                          .enableSwagger() // 开启 swagger 模式
                            .fileOverride() // 覆盖已生成文件
                            .outputDir("D:\小白做毕设2022\mybatis-plus\src\main\java\"); // 指定输出目录
                })
                .packageConfig(builder -> {
                    builder.parent("com.ge.mp") // 设置父包名
                            .moduleName(null) // 设置父包模块名
                            .pathInfo(Collections.singletonMap(OutputFile.mapperXml, "D:\2022\mybatis-plus\src\main\resources\mapper\")); // 设置mapperXml生成路径
                })
                .strategyConfig(builder -> {
                    builder.entityBuilder().enableLombok();
                    builder.mapperBuilder().enableMapperAnnotation().build();
                    builder.controllerBuilder().enableHyphenStyle()  // 开启驼峰转连字符
                            .enableRestStyle();  // 开启生成@RestController 控制器
                    builder.addInclude("sys_user") // 设置需要生成的表名
                            .addTablePrefix("t_", "sys_"); // 设置过滤表前缀
                })
//                .templateEngine(new FreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板
                .execute();

    }
}

3.properties配置项（选）：对小白友好的配置，控制台输出sql语句

mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

4.检查mp配置文件的@MapperScan有没有写好

5.成功生成

6.mp没有提供controller模板如有需要增删改查模板，下方自取即可

controller.Java.vm放在resources下templates文件再启动代码生成器

package ${package.Controller};

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
import java.util.List;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

import ${package.Service}.${table.serviceName};
import ${package.Entity}.${entity};

#if(${restControllerStyle})
import org.springframework.web.bind.annotation.RestController;
#else
import org.springframework.stereotype.Controller;
#end
#if(${superControllerClassPackage})
import ${superControllerClassPackage};
#end

/**
 * <p>
 * $!{table.comment} 前端控制器
 * </p>
 *
 * @author ${author}
 * @since ${date}
 */
#if(${restControllerStyle})
@RestController
#else
@Controller
#end
@RequestMapping("#if(${package.ModuleName})/${package.ModuleName}#end/#if(${controllerMappingHyphenStyle})${controllerMappingHyphen}#else${table.entityPath}#end")
#if(${kotlin})
class ${table.controllerName}#if(${superControllerClass}) : ${superControllerClass}()#end

#else
#if(${superControllerClass})
public class ${table.controllerName} extends ${superControllerClass} {
#else
public class ${table.controllerName} {
#end

@Resource
private ${table.serviceName} ${table.entityPath}Service;

// 新增或者更新
@PostMapping
public boolean save(@RequestBody ${entity} ${table.entityPath}) {
        return ${table.entityPath}Service.saveOrUpdate(${table.entityPath});
        }

@DeleteMapping("/{id}")
public Boolean delete(@PathVariable Integer id) {
        return ${table.entityPath}Service.removeById(id);
        }
        
//勾选删除
@PostMapping("/del/batch")
public boolean deleteBatch(@RequestBody List<Integer> ids) {
        return ${table.entityPath}Service.removeByIds(ids);
        }

@GetMapping
public List<${entity}> findAll() {
        return ${table.entityPath}Service.list();
        }

@GetMapping("/{id}")
public ${entity} findOne(@PathVariable Integer id) {
        return ${table.entityPath}Service.getById(id);
        }

@GetMapping("/page")
public Page<${entity}> findPage(@RequestParam Integer pageNum,
                                @RequestParam Integer pageSize) {
        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
        queryWrapper.orderByDesc("id");
        return ${table.entityPath}Service.page(new Page<>(pageNum, pageSize), queryWrapper);
        }



}

#end