springboot整合mybatis

一、项目结构展示

二、开始整合

1、引入pom依赖

进入Maven中央仓库选择自己所需要的依赖，maven仓库地址：Maven Central

完整Maven依赖如下：

    4.0.0

    com.mgx
    springboot-mgx
    0.0.1-SNAPSHOT
    springboot-mgx
    springboot项目整合

    
        org.springframework.boot
        spring-boot-starter-parent
        2.1.4.RELEASE
    

    
        1.8
        UTF-8
        UTF-8
    

    
        
        
            org.springframework.boot
            spring-boot-starter-web
        

        
        
            org.projectlombok
            lombok
            true
        

        
        
            mysql
            mysql-connector-java
            8.0.27
        

        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            1.3.2
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
                2.1.4.RELEASE
            
        
    

2、添加application 或 bootstrap 配置

server:
  # 端口号
  port: 8080

spring:
  # 配置数据源
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/mgx_test?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
    driver-class-name: com.mysql.cj.jdbc.Driver

# 配置mybatis
mybatis:
  #指定位置扫描Mapper接口对应的XML文件 classpath:xml文件位置
  mapper-locations: classpath:mapper/*.xml
  #指定扫描包位置让mybatis自动扫描到指定义的entity包下
  type-aliases-package: com.mgx.entity

3、创建表

CREATE TABLE `t_info_user` (
  `id` bigint(11) NOT NULL AUTO_INCREMENT COMMENT '自增主键',
  `name` varchar(64) NOT NULL COMMENT '姓名',
  `phone` varchar(11) NOT NULL COMMENT '手机号',
  `age` int(3) NOT NULL COMMENT '年龄',
  `sex` int(1) NOT NULL COMMENT '性别  0-女 1-男 2-其他',
  `address` varchar(255) NOT NULL COMMENT '家庭地址',
  `income` decimal(19,2) DEFAULT NULL COMMENT '年收入',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户基础信息表';

4、项目结构

5、类内容

UserController

package com.mgx.controller;

import com.mgx.entity.InfoUser;
import com.mgx.service.UserService;
import org.apache.ibatis.annotations.Param;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;

/**
 * @author mgx
 * @date 2023/9/15 3:25 PM
 */
@RestController
@RequestMapping("/user")
public class UserController {

    @Resource
    private UserService userService;

    @PostMapping("/addUserInfo")
    public String addUserInfo(@RequestBody InfoUser infoUser) {
        boolean flag = userService.addUserInfo(infoUser);
        if (flag){
            return "添加成功!";
        } else {
            return "添加失败!";
        }
    }

    @GetMapping("/getUserInfo")
    public InfoUser getUserInfo(@Param("id") Long id) {
        return userService.getUserInfo(id);
    }

    @DeleteMapping("/deleteUserInfo")
    public String deleteUserInfo(@Param(value = "id") Long id){
        boolean flag = userService.deleteUserInfo(id);
        if (flag){
            return "删除成功!";
        } else {
            return "删除失败!";
        }
    }

    @PutMapping("/updateUserInfo")
    public String updateUserInfo(@RequestBody InfoUser infoUser){
        boolean flag = userService.updateUserInfo(infoUser);
        if (flag){
            return "更新成功!";
        } else {
            return "更新失败!";
        }
    }

}

UserService

package com.mgx.service;

import com.mgx.entity.InfoUser;

/**
 * @author mgx
 * @date 2023/9/15 3:38 PM
 */
public interface UserService {

    boolean addUserInfo(InfoUser infoUser);

    InfoUser getUserInfo(Long id);

    boolean deleteUserInfo(Long id);

    boolean updateUserInfo(InfoUser infoUser);
}

UserServiceImpl

package com.mgx.service.impl;

import com.mgx.entity.InfoUser;
import com.mgx.mapper.InfoUserMapper;
import com.mgx.service.UserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @author mgx
 * @date 2023/9/15 3:38 PM
 */
@Service
public class UserServiceImpl implements UserService {

    @Resource
    private InfoUserMapper infoUserMapper;

    @Override
    public boolean addUserInfo(InfoUser infoUser) {
        int addRow = infoUserMapper.insert(infoUser);
        return addRow == 1;
    }

    @Override
    public InfoUser getUserInfo(Long id) {
        return infoUserMapper.selectByPrimaryKey(id);
    }

    @Override
    public boolean deleteUserInfo(Long id) {
        int deleteRow = infoUserMapper.deleteByPrimaryKey(id);
        return deleteRow == 1;
    }

    @Override
    public boolean updateUserInfo(InfoUser infoUser) {
        int updateRow = infoUserMapper.updateByPrimaryKeySelective(infoUser);
        return updateRow == 1;
    }


}

InfoUser

package com.mgx.entity;

import java.math.BigDecimal;

/**
 * 用户基础信息表
 * @author mgx
 */
public class InfoUser {
    /**
    * 自增主键
    */
    private Long id;

    /**
    * 姓名
    */
    private String name;

    /**
    * 手机号
    */
    private String phone;

    /**
    * 年龄
    */
    private Integer age;

    /**
    * 性别  0-女 1-男 2-其他
    */
    private Integer sex;

    /**
    * 家庭地址
    */
    private String address;

    /**
    * 年收入
    */
    private BigDecimal income;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public BigDecimal getIncome() {
        return income;
    }

    public void setIncome(BigDecimal income) {
        this.income = income;
    }
}

InfoUserMapper

package com.mgx.mapper;

import com.mgx.entity.InfoUser;

/**
 * @author  mgx
 * @date  2023/9/15 3:29 PM
 */
public interface InfoUserMapper {

    int deleteByPrimaryKey(Long id);

    int insert(InfoUser record);

    int insertSelective(InfoUser record);

    InfoUser selectByPrimaryKey(Long id);

    int updateByPrimaryKeySelective(InfoUser record);

    int updateByPrimaryKey(InfoUser record);

}

InfoUserMapper.xml

  
    
    
    
    
    
    
    
    
    
  
  
    
    id, `name`, phone, age, sex, address, income
  
  
    
    select 
    
    from t_info_user
    where id = #{id,jdbcType=BIGINT}
  
  
    
    delete from t_info_user
    where id = #{id,jdbcType=BIGINT}
  
  
    
    insert into t_info_user (`name`, phone, age, 
      sex, address, income
      )
    values (#{name,jdbcType=VARCHAR}, #{phone,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER}, 
      #{sex,jdbcType=INTEGER}, #{address,jdbcType=VARCHAR}, #{income,jdbcType=DECIMAL}
      )
  
  
    
    insert into t_info_user
    
      
        `name`,
      
      
        phone,
      
      
        age,
      
      
        sex,
      
      
        address,
      
      
        income,
      
    
    
      
        #{name,jdbcType=VARCHAR},
      
      
        #{phone,jdbcType=VARCHAR},
      
      
        #{age,jdbcType=INTEGER},
      
      
        #{sex,jdbcType=INTEGER},
      
      
        #{address,jdbcType=VARCHAR},
      
      
        #{income,jdbcType=DECIMAL},
      
    
  
  
    
    update t_info_user
    
      
        `name` = #{name,jdbcType=VARCHAR},
      
      
        phone = #{phone,jdbcType=VARCHAR},
      
      
        age = #{age,jdbcType=INTEGER},
      
      
        sex = #{sex,jdbcType=INTEGER},
      
      
        address = #{address,jdbcType=VARCHAR},
      
      
        income = #{income,jdbcType=DECIMAL},
      
    
    where id = #{id,jdbcType=BIGINT}
  
  
    
    update t_info_user
    set `name` = #{name,jdbcType=VARCHAR},
      phone = #{phone,jdbcType=VARCHAR},
      age = #{age,jdbcType=INTEGER},
      sex = #{sex,jdbcType=INTEGER},
      address = #{address,jdbcType=VARCHAR},
      income = #{income,jdbcType=DECIMAL}
    where id = #{id,jdbcType=BIGINT}
  

SpringbootMgxApplication

package com.mgx;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author mgx
 */
@MapperScan("com.mgx.mapper")
@SpringBootApplication
public class SpringbootMgxApplication {

    public static void main(String[] args) {
        System.out.println("开始启动");
        SpringApplication.run(SpringbootMgxApplication.class, args);
        System.out.println("启动成功");
    }

}

三、验证springboot整合mybatis是否成功

1、启动项目，端口号8080

2、使用postman调用接口

增：

改：

查：

删： 

 

 到此springboot整合mybatis成功。