简介
MyBatis-Plus（简称 MP）是一个 MyBatis 的增强工具，在 MyBatis 的基础上只做增强不做改变，为简化开发、提高效率而生。
这是官方阐述，我就不废话了，直接上代码和干货
开始整合
GItHUB 项目地址:https://github.com/564580134/MyBatisPlus
创建项目
- File ->new ->project -project initializr
- 项目名称: mybatis_plus
- 包路径: com.mybatis_plus
下面我们开始进行application.yml、model、mapper、service、serviceImpl、controller的创建维护工作
1、pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.mybatis_plus</groupId>
<artifactId>mybatis_plus</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>mybatis_plus</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- Druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.16</version>
</dependency>
<!-- mybatis-plus SpringBoot整合 -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.3.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2、model
package com.mybatis_plus.model;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
import java.io.Serializable;
/**
* @Description: 用户信息
* @Author: LiuRunYong
* @Date: 2020/4/22
**/
@Data
@AllArgsConstructor
@NoArgsConstructor
@Accessors(chain = true)
@TableName(value = "user")
public class UserModel implements Serializable {
/**
* 用户主键
*/
private Integer userId;
/**
* 用户名
*/
private String userName;
/**
* 用户账号
*/
private String account;
/**
* 用户密码
*/
private String password;
/**
* 用户电话
*/
private String phone;
/**
* 用户性别(0:男,1:女)
*/
private Integer sex;
/**
* 用户年龄
*/
private Integer age;
/**
* 用户状态
*/
private Integer status;
}
3、mapper
- 此处需要赘述一下 如果要使用MyBatisPlus插件 那就在mapper 接口集成一下BaseMapper<实体Bean>
- 这样的你mapper接口 就具备了CRUD功能
package com.mybatis_plus.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.mybatis_plus.model.UserModel;
/**
* @Description:
* @Author: LiuRunYong
* @Date: 2020/4/22
**/
public interface UserMapper extends BaseMapper<UserModel> {
}
4、service
package com.mybatis_plus.service;
import com.mybatis_plus.model.UserModel;
import java.util.List;
/**
* @Description:
* @Author: LiuRunYong
* @Date: 2020/4/22
**/
public interface UserService {
/**
* 查询所有用户信息
*
* @return list
*/
List<UserModel> selectALlUserList();
}
5、serviceImpl
package com.mybatis_plus.impl;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.mybatis_plus.mapper.UserMapper;
import com.mybatis_plus.model.UserModel;
import com.mybatis_plus.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.annotation.Resource;
import java.util.List;
/**
* @Description:
* @Author: LiuRunYong
* @Date: 2020/4/22
**/
@Service
@Transactional(rollbackFor = Exception.class)
public class UserServiceImpl implements UserService {
final UserMapper userMapper;
public UserServiceImpl(UserMapper userMapper) {
this.userMapper = userMapper;
}
@Override
public List<UserModel> selectALlUserList() {
return userMapper.selectList(new QueryWrapper<>());
}
}
6、controller
package com.mybatis_plus.controller;
import com.mybatis_plus.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
/**
* @Description:
* @Author: LiuRunYong
* @Date: 2020/4/22
**/
@Slf4j
@RestController
@RequestMapping("/user/")
public class UserController {
final UserService userService;
public UserController(UserService userService) {
this.userService = userService;
}
@GetMapping("list")
public Map<String, Object> listAll() {
Map<String, Object> result = new HashMap<>();
result.put("code", 200);
result.put("data", userService.selectALlUserList());
result.put("msg", "success");
return result;
}
}
7、application.yml
# 服务端口号
server:
port: 10324
# 数据库相关配置
spring:
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://127.0.0.1:10224/mybatis_plus?characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai
username: 用户
password: 密码
激动人心的测试
OK到此就算把MyBatisPlus和SpringBoot整合成功，下一篇我们及介绍怎么使用更牛的 CRUD
备注: 此系列以后周更新一次 讨论群聊
转载：https://blog.csdn.net/qq_36481052/article/details/105678069
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