介绍
AutoGenerator 是 MyBatis-Plus 的代码生成器，通过 AutoGenerator 可以快速生成 Entity、Mapper、Mapper XML、Service、Controller 等各个模块的代码，极大的提升了开发效率。
对于单表的增删改查可以将上述模块自动生成完毕
官方文档
MyBatis-Plus代码生成器新版
使用步骤
1.添加依赖
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.5.1</version>
</dependency>
<!-- 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.在utils包下面创建配置类CodeGenerator
根据注释修改
package com.example.demo.utils;
import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.OutputFile;
import java.util.Collections;
/**
* @Author Alva
* @Date 2022/7/27 0:17
* @PackageName:com.example.demo.utils
* @ClassName: CodeGenerator
* @Description: Mybatis-Plus代码生成器
*/
public class CodeGenerator {
public static void main(String[] args) {
generate();
}
private static void generate() {
FastAutoGenerator.create("jdbc:mysql://localhost:3306/wei?serverTimezone=GMT%2b8", "root", "123456")
.globalConfig(builder -> {
builder.author("alva") // 设置作者
.fileOverride() // 覆盖已生成文件
.outputDir("E:\\桌面\\demo\\src\\main\\java\\"); // 指定输出目录
})
.packageConfig(builder -> {
builder.parent("com.example.demo") // 设置父包名
.moduleName(null) // 设置父包模块名
.pathInfo(Collections.singletonMap(OutputFile.mapperXml, "E:\\桌面\\demo\\src\\main\\resources\\mapper")); // 设置mapperXml生成路径
})
.strategyConfig(builder -> {
builder.entityBuilder().enableLombok();
// 设置需要生成的表名--需要的时候直接替换表名即可
builder.addInclude("w_user")
.addTablePrefix("w_"); // 设置过滤表前缀
})
.execute();
}
}3.添加相应配置
1.找到依赖包下面的模板
比如vm后缀的controller模板，粘贴到自己项目的template包
2.导入包
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
import java.util.List;3.统一规范接口（增删改查）
package ${package.Controller};
##自动生成代码模板
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("/save")
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);
}
@PostMapping("/delbyids")
public boolean deleteBatch(@RequestBody List<Integer> ids) {
return ${table.entityPath}Service.removeByIds(ids);
}
@GetMapping("/findAll")
public List<${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<${entity}> queryWrapper = new QueryWrapper<>();
queryWrapper.orderByDesc("id");
return ${table.entityPath}Service.page(new Page<>(pageNum, pageSize), queryWrapper);
}
}
#end4.启动CodeGenerator类，自动生成
package com.example.houtaisystem.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 com.example.houtaisystem.service.IUserService;
import com.example.houtaisystem.entity.User;
import org.springframework.stereotype.Controller;
/**
* <p>
* 前端控制器
* </p>
*
* @author alva
* @since 2022-07-23
*/
@RestController
@RequestMapping("/user")
public class UserController {
@Resource
private IUserService userService;
// 新增或者更新
@PostMapping("/save")
public boolean save(@RequestBody User user) {
return userService.saveOrUpdate(user);
}
@DeleteMapping("/{id}")
public boolean delete(@PathVariable Integer id) {
return userService.removeById(id);
}
@PostMapping("/delbyids")
public boolean deleteBatch(@RequestBody List<Integer> ids) {
return userService.removeByIds(ids);
}
@GetMapping("/findAll")
public List<User> findAll() {
return userService.list();
}
@GetMapping("/{id}")
public User findOne(@PathVariable Integer id) {
return userService.getById(id);
}
@GetMapping("/page")
public Page<User> findPage(@RequestParam Integer pageNum,
@RequestParam Integer pageSize,
@RequestParam String name) {
QueryWrapper<User> queryWrapper = new QueryWrapper<>();
queryWrapper.orderByDesc("id");
queryWrapper.like("name",name)//根据名字去查找
return userService.page(new Page<>(pageNum, pageSize), queryWrapper);
}
}
注意
生成之后再mapper包下面的生成类上添加注解@Mapper