SpringBoot权限管理开发实战2-集成MyBatis

1月18日，北京，聊聊2025如何加入技术开发？

1.添加依赖

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.1</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

关于依赖的版本，可以到项目官网查看，mybatis-spring-boot-starter的项目地址是https://github.com/mybatis/spring-boot-starter，readme里可以看到版本匹配关系，tags里可以看到版本号

2.添加代码生成插件，使用的插件是MyBatis官方提供的MyBatis Generator

<plugin>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-maven-plugin</artifactId>
    <version>1.3.7</version>
    <configuration>
        <configurationFile>
            src/main/resources/mybatis/generatorConfig.xml
        </configurationFile>
        <overwrite>true</overwrite>
        <verbose>true</verbose>
    </configuration>
    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
    </dependencies>
</plugin>

3.添加config包，在config包下创建Mybatis配置类

package cn.gintone.guard.config;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

@Configuration
@MapperScan("cn.gintone.guard.**.dao")
public class MybatisConfig {
    @Autowired
    private DataSource dataSource;

    @Bean
    public SqlSessionFactory sqlSessionFactory() throws Exception{
        SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        sessionFactoryBean.setTypeAliasesPackage("cn.gintone.guard.**.model");//扫描Model
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        sessionFactoryBean.setMapperLocations(resolver.getResources("classpath*:**/sqlmap/*.xml"));//扫描映射文件
        return sessionFactoryBean.getObject();
    }
}

遇到了@MapperScan注解不识别的问题，修改mybatis-spring-boot-starter的版本号为2.0.0，问题解决，再改回2.1.1还是可以用

4.修改application.yml，添加数据源配置

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/guard?useUnicode=true&zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: 123456

5.创建数据表

DROP TABLE IF EXISTS `sys_user`;
CREATE TABLE `sys_user` (
  `id` bigint(20) NOT NULL COMMENT '编号',
  `name` varchar(50) NOT NULL COMMENT '用户名',
  `nick_name` varchar(150) DEFAULT NULL COMMENT '昵称',
  `avatar` varchar(150) DEFAULT NULL COMMENT '头像',
  `password` varchar(100) DEFAULT NULL COMMENT '密码',
  `salt` varchar(40) DEFAULT NULL COMMENT '加密盐',
  `email` varchar(100) DEFAULT NULL COMMENT '邮箱',
  `mobile` varchar(100) DEFAULT NULL COMMENT '手机号',
  `status` tinyint(4) DEFAULT NULL COMMENT '状态  0：禁用   1：正常',
  `dept_id` bigint(20) DEFAULT NULL COMMENT '机构ID',
  `create_by` varchar(50) DEFAULT NULL COMMENT '创建人',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  `last_update_by` varchar(50) DEFAULT NULL COMMENT '更新人',
  `last_update_time` datetime DEFAULT NULL COMMENT '更新时间',
  `del_flag` tinyint(4) DEFAULT '0' COMMENT '是否删除  -1：已删除  0：正常',
  PRIMARY KEY (`id`),
  UNIQUE KEY `name` (`name`),
  UNIQUE KEY `nick_name_UNIQUE` (`nick_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户管理';

INSERT INTO `sys_user` VALUES ('1', 'admin', '超管', null, 'bd1718f058d8a02468134432b8656a86', 'YzcmCZNvbXocrsz9dm8e', 'admin@qq.com', '13612345678', '1', '4', 'admin', '2020-09-19 11:11:11', 'admin', '2020-09-19 11:11:11', '0');

6.生成MyBatis模块，包括Model,DAO,XML映射文件，手动编写比较麻烦，使用上面配置的插件自动生成

在idea中找到生成命令，双击即可

7.编写服务接口

package cn.gintone.guard.service.impl;

import cn.gintone.guard.dao.SysUserMapper;
import cn.gintone.guard.model.SysUser;
import cn.gintone.guard.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class SysUserServiceImpl implements SysUserService {
    @Autowired
    private SysUserMapper sysUserMapper;
    @Override
    public List<SysUser> selectAll() {
        return sysUserMapper.selectAll();
    }
}

8.编写控制器

package cn.gintone.guard.controller;

import cn.gintone.guard.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("user")
public class SysUserController {
    @Autowired
    private SysUserService sysUserService;
    @GetMapping("/all")
    public Object selectAll(){
        return sysUserService.selectAll();
    }
}

9.运行测试

完整前后台代码托管在gitee上，地址 https://gitee.com/gintone/Guard