以下是我的JSON请求示例:
{
"message": "Hi",
"createdOn": "2020-04-29T19:39:14.589+05:30",
"amount": "58.1"
}
我的模型类就是这样,我已经尝试了所有方法。自动增量功能已在我的SQL Server表中打开,可能是什么问题?:
import java.util.Date;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.xml.bind.annotation.XmlRootElement;
@Entity
@Table(name = "MessagesDetail")
@XmlRootElement
public class Message
{
@Id
@Column(name = "msg_id",unique=true, nullable = false)
@GeneratedValue(strategy=GenerationType.AUTO)
private Long msg_id;
@Column
private String message;
@Column
private Date createdOn;
@Column
private Double amount;
public Long getMsg_id()
{
return msg_id;
}
public void setId(Long msg_id)
{
this.msg_id= msg_id;
}
public String getMessage()
{
return message;
}
public void setMessage(String message)
{
this.message = message;
}
public Date getCreatedOn()
{
return createdOn;
}
public void setCreatedOn(Date createdOn)
{
this.createdOn = createdOn;
}
public Double getAmount()
{
return amount;
}
public void setAmount(Double amount)
{
this.amount = amount;
}
public Message()
{
}
public Message(Long id, String message, Date createdOn, Double amount)
{
this.id = id;
this.message = message;
this.createdOn = createdOn;
this.amount = amount;
}
}
然后,我使用以下代码保存它:
public void addMessage(Message bean){
Session session = SessionUtil.getSession();
Transaction tx = session.beginTransaction();
addMessage(session,bean);
tx.commit();
session.close();
}
private void addMessage(Session session, Message bean){
Message message = new Message();
message.setMessage(bean.getMessage());
message.setCreatedOn(bean.getCreatedOn());
message.setAmount(bean.getAmount());
session.save(Message);
}
我正在使用json输入hibernate在Java中构建一个REST Web服务,用于数据库连接和数据库,我正在使用MS SQL Server作为数据库。尽管我的数据库表ID列设置为自动递增,但我还是...
identity