Spring JDBC 为具有值的列返回空值

Spring JDBC returning null values for columns with values

我对 spring-boot-starter-data-jdbc:2.6.2 的体验很奇怪。 两个相似的查询返回不同的结果。当我在存储库中使用 @Query 时,如下所示,我返回了几列,但其余列返回为 null。

@Repository
public interface StaffRepository extends CrudRepository<Staff, Long> {
    @Query(value = "select * FROM staff WHERE email = :email and deleted = false")
    Staff findStaffByEmail(String email);
}

Returns:

Staff(id=2, firstName=null, middleName=null, lastName=null, email=geek@mail.com, password=a$sa.48mjYIYa/0Z9ck8J.ReYAxu8qzA062zUCUWZfYWs/h7BwTh28G, ntkenNo=null, phoneNumber=null, branch=Nairobi branch, roles=[], loginDisabled=false, emailVerified=false, deleted=false, failedLoginAttempts=0, createdAt=null, updatedAt=null)

但是当我使用 jdbcTemplate.queryForMap 实现它时,如下所示,我得到了正确的结果所有具有它们值的列

Map<String, Object> map = jdbcTemplate.queryForMap("select * FROM staff WHERE email = ? and deleted = false", email);
        System.out.println(map);

返回:

{id=2, firstName=John, middleName=Doe, lastName=Doesto, email=geek@mail.com, password=a$sa.48mjYIYa/0Z9ck8J.ReYAxu8qzA062zUCUWZfYWs/h7BwTh28G, ntkenNo=1234, phoneNumber=+14255550100, branch=Nairobi branch, roles=[], deleted=false, createdAt=2021-12-27 19:32:36.0, updatedAt=null, loginDisabled=false, emailVerified=false, failedLoginAttempts=0}

我上面的代码可能有什么问题。

我正在使用 Mysql 数据库。

下面是 Staff entity 其映射不起作用

package com.myapp.models;

import lombok.*;
import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Table;

@Data
@Table("staff")
@Builder(toBuilder = true, builderClassName = "Builder")
@NoArgsConstructor
@AllArgsConstructor
public class Staff {
    @Id
    Integer id;
    Long bankId;
    String firstName, middleName, lastName, email, password, ntkenNo, phoneNumber, branch, roles;
    boolean loginDisabled, emailVerified, deleted;
    int failedLoginAttempts;
    String createdAt, updatedAt;
}

然而,这是一个具有相同定义和查询但工作正常的实体:

package com.myapp.models;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Table;

@Data
@Table("sys_admins")
@Builder(toBuilder = true, builderClassName = "Builder")
@NoArgsConstructor
@AllArgsConstructor
public class SysAdmins {
    @Id
    Integer id;
    String name, email, password, role;
}

存储库查询:

package com.rmauth.repositories;

import com.rmauth.models.SysAdmins;
import org.springframework.data.jdbc.repository.query.Query;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface SysAdminsRepository extends CrudRepository<SysAdmins, Long> {

    @Query(value = "select * FROM sys_admins WHERE email = :email and deleted = false")
    SysAdmins findByEmail(String email);

}

我看不出为什么第一个不起作用。

如 M. Deinum 所述。然而,映射失败是个问题,因为我想继续利用 Lombok 来简化 POJOS 的工作。我决定直接使用 jdbcTemplateBeanPropertyRowMapper 而不是使用 @Query,这需要我实现 Mapper class 从而增加样板代码。我只需要简单而动态的方法。

Staff staff =  jdbcTemplate.queryForObject("select * FROM staff WHERE email = ? and deleted = false", new BeanPropertyRowMapper<>(Staff.class), email);