@Select select a record with null columns，these columns are filled with columns' value that are not null

I am using myBatis in springboot web project, I got a table in my database like this:

I also have a bean class(User) has fields just like the table’s structure:

public class User {
    public String loginId, loginPassword, name;
    public String enrollTime, gender, address, email;
    public User(String loginId, String loginPassword, String name, String gender, String address, String email) {
        this.loginId = loginId;
        this.loginPassword = loginPassword;
        this.name = name;
        this.gender = gender;
        this.address = address;
        this.email = email;
    }
    // getters and setters
}

myBatis mapper was written like this:

@Mapper
public interface UserMapper {
    @Select("select * from users where loginId=#{loginId}")
    public User GetUserByLoginId(@Param("loginId") String loginId);
}

When I call userMapper.GetUserByLoginId(“2”)，myBatis give me the User object like this:

It can be seen that the address and email fileds should have been null but was filled by other fileds’ value. I wonder what’s the problem with MyBatis, should I add some other annotation to fix this?

[Paper-Folding]

I know what’s going on.As I continue to test, a field in my model has a slightly different name from that in my database field, which leads to null value mis-match. Apologize for wasting your time.

[Paper-Folding]

@Paper-Folding Hello, I think you mapper is wrong , mapper mapping you can check it.

No,mapper should be correct. This problem occurs in mysql database when several fields are varchar, and some of the records among these columns are null. I solved the problem for now by modifying default value of varchar fileds in my database from null to to EMPTY_STRING. As soon as I complete the current on-going project, I’ll provide a repro. (Sorry for my being busy now, MyBatis is a still a powerful tool for me.Thanks for all of your developers’ hard work!)