1.入门案例

  1.1 pom依赖引用

<dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.5.3.1</version>
</dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.49</version>
</dependency>

  1.2 yml配置文件

spring:datasource:driver -class-name: com.mysql.jdbc.Driverurl: jdbc: mysql://192.168.2.17:3306/test?useUnicode=true&characterEncoding=utf-8username: rootpassword: roottype: com.zaxxer.hikari.HikariDataSource

  1.3 启动类

@SpringBootApplication
@MapperScan("com.atguigu.mybatisplus.mapper")
public class MybatisplusApplication {public static void main(String[] args) {SpringApplication.run(MybatisplusApplication.class, args);}
}

  1.4 添加实体

package com.atguigu.boot.bean;
@Data
@TableName("t_user")
public class User {private int id;private String userName;private int age;
}

  1.5 添加mapper接口

package com.atguigu.boot.mapper;
@Mapper
public interface UserMapper extends BaseMapper<t_user> {}

  1.6 测试

@GetMapping("all")
public List<User> getAll()
{List<User> users = this.userMapper.selectList(null);return users;
}

  1.7 添加日志

mybatis-plus:
  configuration:
    map-underscore-to-camel-case: false
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

2.基本CRUD

  2.1 插入

  2.2 删除

  2.3 修改

  2.4 查询

  2.5 通用Service

3.常用注解

4.条件构造器和常用接口

5.插件

6.通用枚举

7.代码生成器

8.多数据源

9.MyBatisX插件