Mybatis框架实体类字段与数据库表字段不一致导致查询该字段的值一直为null

public class BasicInfo {
private Integer basic_id;
private String name;
private String gender;
private Integer age;
private String address;
private String email;
private String phone;
private String school;
private String introduce;

//……（此处省略setter和getter方法）
}

create table `basic_info`
(
`basic_id` int not null auto_increment,
`name` varchar(16),
`gender` varchar(4) ,
`age` int default '0',
`address` varchar(64),
`email` varchar(32),
`tel` varchar(16),
`school` varchar(64),
`introdece` varchar(1024),
`user_id` int,

primary key (`basic_id`),
key `fk_basicinfo_account` (`user_id`),

constraint `fk_basicinfo_account` foreign key (`user_id`) references `account` (`id`)

) engine=InnoDB default charset=utf8 |

<select id="queryById" parameterType="int" resultType="BasicInfo">
select basic_id,name,gender, age,school,tel
from basic_info
where basic_id = #{id}
</select>

@Override
public BasicInfo queryById(Integer id) {
BasicInfo basicInfo = null;
SqlSession session = MybatisSessionManage.getSqlSessionAutoCommit();
basicInfo = session.selectOne("basicinfo.queryById", id);
return basicInfo;
}

解决方法

<select id="queryById" parameterType="int" resultType="BasicInfo">
select basic_id,name,gender, age,school,tel as phone
from basic_info
where basic_id = #{id}
</select>

resultType

resultMap

<resultMap id="basicInfoMapper" type="BasicInfo">
<id column="basic_info" property="basic_id" />
<result column="name" property="name" />
<result column="gender" property="gender" />
<result column="age" property="age" />
<result column="address" property="address" />
<result column="email" property="email" />
<result column="tel" property="phone" />
<result column="school" property="school" />
<result column="introduce" property="introduce" />
</resultMap>

<select id="queryByIdAndMapper"  resultMap="basicInfoMapper" parameterType="int">
select basic_id,name,gender, age,school,tel
from basic_info
where basic_id = #{id}
</select>