SpringBoot集成Mybatis-Plus

1.maven依赖

     com.baomidou
     mybatis-plus-boot-starter
     3.4.3.1
 
 
 
     mysql
     mysql-connector-java
     runtime
 

2.yaml配置

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/haha?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF-8
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver

mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #开启sql日志
    map-underscore-to-camel-case: true # 该配置就是将带有下划线的表字段映射为驼峰格式的实体类属性
    mapper-locations: classpath:mapper/*.xml #配置xml地址

3.实体类

@Data
@ApiModel
@TableName(value = "user") //mybatis-plus注解
public class UserEntity implements Serializable {
    private static final long serialVersionUID = 1903236519513043621L;

    @ApiModelProperty("id")
    private Long id;
    
    @ApiModelProperty("名称")
    private String name;

    @ApiModelProperty("性别")
    private Integer sex;

    @ApiModelProperty("日期")
    private Date date;

}

4.DAO
dao接口需要继承baseMapper，泛型为实体类

public interface UserDao extends baseMapper {
}

5.service
service接口需要继承IService，泛型为实体类

public interface UserService extends IService {
}

6.serviceImpl
serviceImpl实现service接口，并继承ServiceImpl类，泛型为DAO接口和实体类

@Service
public class UserServiceImpl extends ServiceImpl implements PersonService {
}

7.xml

注：记得在启动类加上@MapperScan(basePackages = “com.example.dao”)注解，或者在每个dao加上@Mapper