第一步,导入tk mybatis依赖

<!-- 通用tk mapper -->
<dependency>
    <groupId>tk.mybatis</groupId>
    <artifactId>mapper-spring-boot-starter</artifactId>
    <version>2.1.5</version>
    <exclusions>
        <!-- 排除spring的自带jdbc -->
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </exclusion>
    </exclusions>
</dependency>

第二步,配置mapper接口，继承通用mapper
例如:
public interface UserMapper extends Mapper<UmsMember>

第三步,在实体类中配置通用mapper的主键和主键返回策略,添加ID属性中
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)

然后在属性上添加注解,例如:

/**账号*/
@Column(name = "username")
private String username;

/**密码*/
@Column(name = "password")
private String password;

第四步,配置spring boot启动类扫描器MapperScan注解，使用通用mapper的tk.mybatis.spring.annotation.MapperScan包
@MapperScan(basePackages = "com.*.*.*.mapper")