java - 获取 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException : Unknown column

Question

我决定测试 Spring Boot。我的项目有下一个依赖项:JPA、MySql、WEB。我创建了简单的 MySql 数据库。这是其中的一个表格:

CREATE TABLE `rawtype` (
  `rtId` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `rtName` varchar(50) COLLATE utf8_unicode_ci NOT NULL,
  PRIMARY KEY (`rtId`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci

这是该表的域:

import javax.persistence.*;
import java.io.Serializable;

@Entity
@Table(name="rawtype")
public class Rawtype implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @Column(name="rtId", nullable = false)
    @GeneratedValue
    private int rtId;

    @Column(name="rtName", nullable = false)
    private String rtName;

    protected Rawtype() {
    }

    public Rawtype(int rtId, String rtName) {
        this.rtId = rtId;
        this.rtName = rtName;
    }

    public int getRtId() {
        return rtId;
    }

    public void setRtId(int rtId) {
        this.rtId = rtId;
    }

    public String getRtName() {
        return rtName;
    }

    public void setRtName(String rtName) {
        this.rtName = rtName;
    }

    @Override
    public String toString() {
        return "Rawtype{" +
                "rtId=" + rtId +
                ", rtName='" + rtName + '\'' +
                '}';
    }
}

尝试使用 JpaRepository 方法从该表获取所有行

  List<T> findAll();

在日志中我看到 Hibernate 执行了这个查询:

select rawtype0_.rt_id as rt_id1_0_, rawtype0_.rt_name as rt_name2_0_ from rawtype rawtype0_

我收到此错误:

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'rawtype0_.rt_id' in 'field list'

有人可以建议我该怎么做吗？谢谢。

附注

RawtypeRepository.java

import org.springframework.data.jpa.repository.JpaRepository;
import domain.Rawtype;

public interface RawtypeRepository extends JpaRepository<Rawtype,Integer> {
    }

RawtypeServiceImpl.java

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import domain.Rawtype;

import java.util.List;

@Service
@Transactional
public class RawtypeServiceImpl implements RawtypeService{

    @Autowired
    RawtypeRepository rawtypeRepository;

    public List<Rawtype> findAll() {
        return rawtypeRepository.findAll();
    }
}

Answer 1

感谢@aribeiro 为我提供了这个 link我发现了我的错误。列的名称不应采用驼峰命名法。因此我改变了

@Column(name="rtId", nullable = false) 至

@Column(name="rtid", nullable = false)

现在程序运行良好。