啦啦啦啦啦，富贵同学又开始开坑了，出了个免费的专栏，主要给大家从0基础开始用springBoot集成第三方的插件或者功能，如果这篇专栏能帮到你，一定不要忘了点一个赞哦！！欢迎大家收藏分享
富贵同学发现好多人都不喜欢看官方文档，怕看不懂，其实我也是这样，有没有和我一样喜欢看博客而不看官方文档的。
官方文档：
快速开始
既然这样今天给大家讲一下springboot集成mybatisplus，其实在这个前面我还写了一篇文章，是将controller层给抽取出来，只要继承了basecontrol类就可以实现增删改查，分页查询，条件查询等复杂的功能，请大家移至这篇文章上观看
MybatisPlus不好用，帅小伙一气之下写了个MybatisPlusPro
第一步，导入jar包
<!--Mybatis-Plus--> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.4.2</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.22</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>
第二步，编写dao类，其实mybatisplus很简单，就是dao层实现basemapper就可以实现增删改查了
import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.wangfugui.mybatisplus.dao.domain.User; import org.springframework.stereotype.Repository; /** * @author MaSiyi * @version 1.0.0 2021/12/11 * @since JDK 1.8.0 */ @Repository public interface UserDao extends BaseMapper<User> { }
对，就完了。。。。
第三步，调用他的方法
package com.wangfugui.mybatisplus.service.impl; import com.wangfugui.mybatisplus.dao.UserDao; import com.wangfugui.mybatisplus.dao.domain.User; import com.wangfugui.mybatisplus.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * @author MaSiyi * @version 1.0.0 2021/12/11 * @since JDK 1.8.0 */ @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; /** * 增 * * @param user * @Param: [user] * @return: java.lang.String * @Author: MaSiyi * @Date: 2021/12/11 */ @Override public String insert(User user) { userDao.insert(user); return "ok"; } /** * 改 * * @param user * @Param: [user] * @return: java.lang.String * @Author: MaSiyi * @Date: 2021/12/11 */ @Override public String update(User user) { userDao.update(user,null); return "ok"; } /** * 查 * * @param id * @Param: [id] * @return: java.lang.String * @Author: MaSiyi * @Date: 2021/12/11 */ @Override public User getOne(Integer id) { return userDao.selectById(id); } /** * 删 * * @param id * @Param: [id] * @return: java.lang.String * @Author: MaSiyi * @Date: 2021/12/11 */ @Override public String delete(Integer id) { userDao.deleteById(id); return "ok"; } }
第四步，controller测试
import com.wangfugui.mybatisplus.dao.domain.User; import com.wangfugui.mybatisplus.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; /** * @author MaSiyi * @version 1.0.0 2021/12/11 * @since JDK 1.8.0 */ @RestController @RequestMapping("/user") public class UserController { @Autowired private UserService userService; @PostMapping("/insert") public String insert(@RequestBody User user) { return userService.insert(user); } @PostMapping("/update") public String update(@RequestBody User user) { return userService.update(user); } @GetMapping("/getOne") public User getOne(@RequestParam Integer id) { return userService.getOne(id); } @GetMapping("/delete") public String delete(@RequestParam Integer id) { return userService.delete(id); } }
最后附上我的“mybatispluspro”的类：
import cn.hutool.core.util.StrUtil; import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.baomidou.mybatisplus.extension.service.IService; import com.wangfugui.apprentice.common.util.ApprenticeUtil; import com.wangfugui.apprentice.common.util.ResponseUtils; import com.wangfugui.apprentice.dao.dto.PageParamDto; import io.swagger.annotations.ApiOperation; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestParam; import java.util.List; /** 核心公共controller类 * @Param: * @return: * @Author: MaSiyi * @Date: 2021/11/26 */ public class BaseController<S extends IService<E>, E> { @Autowired protected S baseService; @ApiOperation("增") @PostMapping("/insert") public ResponseUtils insert(@RequestBody E entity) { baseService.save(entity); return ResponseUtils.success("添加成功"); } @ApiOperation("删") @PostMapping("/deleteById") public ResponseUtils delete(@RequestBody List<Integer> ids) { baseService.removeByIds(ids); return ResponseUtils.success("添加成功"); } @ApiOperation("改") @PostMapping("/updateById") public ResponseUtils updateById(@RequestBody E entity) { baseService.updateById(entity); return ResponseUtils.success("添加成功"); } @ApiOperation("查") @GetMapping("/getById") public ResponseUtils getById(@RequestParam Integer id) { return ResponseUtils.success(baseService.getById(id)); } @ApiOperation("存") @PostMapping("/save") public ResponseUtils save(@RequestBody E entity) { baseService.saveOrUpdate(entity); return ResponseUtils.success("添加成功"); } @ApiOperation("list查") @PostMapping("/list") public ResponseUtils list(@RequestBody E entity) { QueryWrapper<E> queryWrapper = ApprenticeUtil.getQueryWrapper(entity); List<E> list = baseService.list(queryWrapper); return ResponseUtils.success(list); } @ApiOperation("page查") @PostMapping("/page") public ResponseUtils page(@RequestBody PageParamDto<E> pageParamDto) { //限制条件 if (pageParamDto.getPage() < 1) { pageParamDto.setPage(1); } if (pageParamDto.getSize() > 100) { pageParamDto.setSize(100); } Page<E> page = new Page<>(pageParamDto.getPage(), pageParamDto.getSize()); QueryWrapper<E> queryWrapper = new QueryWrapper<>(); //升序 String asc = pageParamDto.getAsc(); if (!StrUtil.isEmpty(asc) && !"null".equals(asc)) { String[] split = asc.split(","); queryWrapper.orderByAsc(split); } //降序 String desc = pageParamDto.getDesc(); if (!StrUtil.isEmpty(desc) && !"null".equals(desc)) { String[] split = desc.split(","); queryWrapper.orderByDesc(split); } Page<E> ePage = baseService.page(page, queryWrapper); return ResponseUtils.success(ePage); } @ApiOperation("获取数量") @PostMapping("/count") public ResponseUtils count(@RequestBody E entity) { QueryWrapper<E> queryWrapper = ApprenticeUtil.getQueryWrapper(entity); long count = baseService.count(queryWrapper); return ResponseUtils.success(count); } }
好了，就是这么的简单，完整代码请移至SpringBoot+MybatisPlus 查看
