1.依赖

        <!-- 代码生成器 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>1.7</version>
        </dependency>

2.生成代码类utils.CodeGenerator

package com.xingyu.demo.utils;

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

import java.util.Collections;

public class CodeGenerator {

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

    private static void generate() {
        FastAutoGenerator.create("jdbc:mysql://localhost:3306/zhang?serverTimezone=GMT%2b8", "root", "123456")
                .globalConfig(builder -> {
                    builder.author("张星宇") // 设置作者
                            .enableSwagger() // 开启 swagger 模式
                            .fileOverride() // 覆盖已生成文件
                            .outputDir("E:\\代码\\后台管理系统\\springboot\\src\\main\\java"); // 指定输出目录
                })
                .packageConfig(builder -> {
                    builder.parent("com.xingyu.demo") // 设置父包名
                            .moduleName(null) // 设置父包模块名
                            .pathInfo(Collections.singletonMap(OutputFile.mapperXml, "E:\\代码\\后台管理系统\\springboot\\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.创建模板templates\controller.java.vm

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
        public Boolean delete(@PathVariable Integer id) {
                return ${table.entityPath}Service.removeById(id);
        }

        @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,
                                        @RequestParam(defaultValue = "") String username,
                                        @RequestParam(defaultValue = "") String email,
                                        @RequestParam(defaultValue = "") String address) {
                QueryWrapper<User> queryWrapper = new QueryWrapper<>();
                if (!"".equals(username)) {
                queryWrapper.like("username", username);
                }
                if (!"".equals(email)) {
                queryWrapper.like("email", email);
                }
                if (!"".equals(address)) {
                queryWrapper.like("address", address);
                }
                queryWrapper.orderByDesc("id");
                return ${table.entityPath}Service.page(new Page<>(pageNum, pageSize), queryWrapper);
        }

        }

#end