一、导入坐标依赖

前置依赖，需要用到 mybatis,mysql驱动,lombok插件以及swapper.(因为后面接口测试文档，所以swapper也配了)

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--mybatis 启动器-->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.3.1</version>
</dependency>

<!-- mysql数据源驱动 -->
<dependency>
    <groupId>com.mysql</groupId>
    <artifactId>mysql-connector-j</artifactId>
    <scope>runtime</scope>
</dependency>
<!--lombok插件-->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
</dependency>
<!--swagger 集成-->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-boot-starter</artifactId>
    <version>3.0.0</version>
</dependency>

mybatis-plus 代码生成器的依赖，mybatis-plus生成器依赖于mybatis-plus

<!--mybatis-plus-->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.5.3.1</version>
</dependency>
<!--mybatis-plus代码生成器-->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
    <version>3.5.3.1</version>
</dependency>
<!--mybatis-plus 代码生成器的模板引擎-->
<dependency>
    <groupId>org.apache.velocity</groupId>
    <artifactId>velocity-engine-core</artifactId>
    <version>2.3</version>
</dependency>

二、配置快速代码生成器

package com.robin.codegenerator.utils;

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

import java.sql.Types;
import java.util.Collections;

/*
* 代码生成器配置类
*/
public class CodeGenerator {

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

    public static void generator(){
        FastAutoGenerator.create("jdbc:mysql://localhost:3306/robin?characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false",
                                 "root", "root")
            .globalConfig(builder -> {
                builder.author("robin") // 设置作者
                    .enableSwagger() // 开启 swagger 模式
                    .fileOverride() // 覆盖已生成文件
                    .outputDir("D:\\IdeaProjects\\CodeGenerator\\src\\main\\java"); // 指定输出目录
            })
            .dataSourceConfig(builder -> builder.typeConvertHandler((globalConfig, typeRegistry, metaInfo) -> {
                int typeCode = metaInfo.getJdbcType().TYPE_CODE;
                if (typeCode == Types.SMALLINT) {
                    // 自定义类型转换
                    return DbColumnType.INTEGER;
                }
                return typeRegistry.getColumnType(metaInfo);

            }))
            .packageConfig(builder -> {
                builder.parent("com.robin.codegenerator") // 设置父包名
                    .moduleName(null) // 设置父包模块名
                    .pathInfo(Collections.singletonMap(OutputFile.xml, "D:\\IdeaProjects\\CodeGenerator\\src\\main\\resources\\mapper")); // 设置mapperXml生成路径
            })
            .strategyConfig(builder -> {                    
                builder.controllerBuilder().enableHyphenStyle(); // 开启驼峰转连字符
                builder.controllerBuilder().enableRestStyle(); //开启生成@RestController 控制器
                builder.entityBuilder().enableLombok(); // 配置lombok 对实体类的策略配置Lombok的getter setter
                builder.addInclude("sys_user") // 设置需要生成的表名
                    .addTablePrefix("sys_", "t_"); // 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();
    }
}

三、自定义代码生成器模板

自定义代码生成器模板，需要我们找到依赖中代码生成器的模板配置文件。（以自定义controller的生成器模板为例子）

盘符:\仓库地址\com\baomidou\mybatis-plus-generator\3.5.3.1\mybatis-plus-generator-3.5.3.1.jar!\templates\controller.java.vm

在这里插入图片描述

自己需要定义哪些模板就找到对应的文件，copy一份到resources/templates目录下

在这里插入图片描述

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

#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;

@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);
}

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

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

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

}

#end