我决定测试Spring Boot。我的项目具有下一个依赖项:JPA,MySql,WEB。我创建了简单的MySql数据库。这是一张表格:
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
这是此表的域:
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方法从该表中获取所有行
List<T> findAll();
在日志中,我看到Hibernate执行以下查询:
select rawtype0_.rt_id as rt_id1_0_, rawtype0_.rt_name as rt_name2_0_ from rawtype rawtype0_
我得到这个错误:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'rawtype0_.rt_id' in 'field list'
谁能建议我该怎么办?
谢谢。
附言
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();
}
}
最佳答案
感谢@aribeiro为我提供了这个link,我发现了我的错误。
列的名称不应为camelCase。因此我改变了
@Column(name =“ rtId”,nullable = false)到
@Column(name =“ rtid”,nullable = false)
现在程序运行正常。