mybatis-plus 的官网：https://baomidou.com/
1、安装
- mp的依赖
<!-- 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>
MP网址：https://baomidou.com/pages/779a6e/#%E4%BD%BF%E7%94%A8
2.CodeGenerator.java
package com.xiao.utils;
import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.OutputFile;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import java.util.Collections;
public class CodeGenerator {
public static void main(String[] args) {
generate();
}
private static void generate() {
FastAutoGenerator.create("jdbc:mysql://localhost:3306/tests?useUnicode=true&characterEncoding=UTF-8&useSSL=false" +
"&serverTimezone=UTC&serverTimezone=GMT%2b8", "root", "123456")
.globalConfig(builder -> {
builder.author("xiaxiao") // 设置作者
.enableSwagger() // 开启 swagger 模式
.fileOverride() // 覆盖已生成文件
.outputDir("D:\\code\\javacode\\springboot\\houduan\\hou2\\src\\main\\java\\"); // 指定输出目录
})
.packageConfig(builder -> {
builder.parent("com.xiao") // 设置父包名
.moduleName(null) // 设置父包模块名
.pathInfo(Collections.singletonMap(OutputFile.mapperXml,
"D:\\code\\javacode\\springboot\\houduan\\hou2\\src\\main\\resources\\mapper\\")); // 设置mapperXml生成路径
})
.strategyConfig(builder -> {
//lobok插件
// builder.entityBuilder().enableLombok();
// //加 mapper 注解
// 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();
}
}
- 生成后的框架
3.自定义Controller模板：
- 原本控制模板就只生成这样
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});
}
//删除
@DeleteMapping("/{id}")
public Boolean delete(@PathVariable Integer id) {
return ${
table.entityPath}Service.removeById(id);
}
//多项删除
@PostMapping("/del/batch")
public boolean deleteBatch(@RequestBody List<Integer> ids) {
return ${
table.entityPath}Service.removeByIds(ids);
}
//查询所有数据
@GetMapping
public List<${
entity}> findAll() {
return ${
table.entityPath}Service.list();
}
//根据id查询
@GetMapping("/{id}")
public ${
entity} findOne(@PathVariable Integer id) {
return ${
table.entityPath}Service.getById(id);
}
//分页查询
@GetMapping("/page")
public Page<${
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
- UserController.java
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.xiao.service.IUserService;
import com.xiao.entity.User;
import org.springframework.stereotype.Controller;
/**
* <p>
* 前端控制器
* </p>
*
* @author xiaxiao
* @since 2022-05-27
*/
@RestController
@RequestMapping("/user")
public class UserController {
@Resource
private IUserService userService;
// 新增或者更新
@PostMapping
public boolean save(@RequestBody User user) {
return userService.saveOrUpdate(user);
}
//删除
@DeleteMapping("/{id}")
public Boolean delete(@PathVariable Integer id) {
return userService.removeById(id);
}
//多项删除
@PostMapping("/del/batch")
public boolean deleteBatch(@RequestBody List<Integer> ids) {
return userService.removeByIds(ids);
}
//查询所有数据
@GetMapping
public List<User> findAll() {
return userService.list();
}
//根据id查询
@GetMapping("/{id}")
public User findOne(@PathVariable Integer id) {
return userService.getById(id);
}
//分页查询
@GetMapping("/page")
public Page<User> 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 userService.page(new Page<>(pageNum, pageSize), queryWrapper);
}
}