SQLException: java.util.Date 不能使用休眠转换为 java.sql.Time

Question

我有一个对象，我使用 Hibernate 逆向工程向导 和 Hibernate 映射文件和数据库中的 POJO 创建了它。

在这种情况下，我的表有一个 sql 时间字段（reminder_time），但 hibernate 将该字段生成为 java.util.Date 字段。

这是我的桌子，

提到的字段是reminder_time。

这是我的目标，

import java.util.Date;


public class Reminder  implements java.io.Serializable {


     private Integer idreminder;
     private Patient patient;
     private String remindAbout;
     private Date reminderTime;
     private Date reminderDate;
     private boolean active;
     private boolean repeat;
     private Date dateCreated;
     private Date lastUpdated;

    public Reminder() {
    }


    public Reminder(Patient patient, String remindAbout, Date reminderTime, Date reminderDate, boolean active, boolean repeat, Date lastUpdated) {
        this.patient = patient;
        this.remindAbout = remindAbout;
        this.reminderTime = reminderTime;
        this.reminderDate = reminderDate;
        this.active = active;
        this.repeat = repeat;
        this.lastUpdated = lastUpdated;
    }
    public Reminder(Patient patient, String remindAbout, Date reminderTime, Date reminderDate, boolean active, boolean repeat, Date dateCreated, Date lastUpdated) {
       this.patient = patient;
       this.remindAbout = remindAbout;
       this.reminderTime = reminderTime;
       this.reminderDate = reminderDate;
       this.active = active;
       this.repeat = repeat;
       this.dateCreated = dateCreated;
       this.lastUpdated = lastUpdated;
    }

    public Integer getIdreminder() {
        return this.idreminder;
    }

    public void setIdreminder(Integer idreminder) {
        this.idreminder = idreminder;
    }
    public Patient getPatient() {
        return this.patient;
    }

    public void setPatient(Patient patient) {
        this.patient = patient;
    }
    public String getRemindAbout() {
        return this.remindAbout;
    }

    public void setRemindAbout(String remindAbout) {
        this.remindAbout = remindAbout;
    }
    public Date getReminderTime() {
        return this.reminderTime;
    }

    public void setReminderTime(Date reminderTime) {
        this.reminderTime = reminderTime;
    }
    public Date getReminderDate() {
        return this.reminderDate;
    }

    public void setReminderDate(Date reminderDate) {
        this.reminderDate = reminderDate;
    }
    public boolean isActive() {
        return this.active;
    }

    public void setActive(boolean active) {
        this.active = active;
    }
    public boolean isRepeat() {
        return this.repeat;
    }

    public void setRepeat(boolean repeat) {
        this.repeat = repeat;
    }
    public Date getDateCreated() {
        return this.dateCreated;
    }

    public void setDateCreated(Date dateCreated) {
        this.dateCreated = dateCreated;
    }
    public Date getLastUpdated() {
        return this.lastUpdated;
    }

    public void setLastUpdated(Date lastUpdated) {
        this.lastUpdated = lastUpdated;
    }
}

当我尝试使用上述对象将一些数据保存到此表中时，出现以下异常，

Oct 06, 2016 4:40:06 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'repeat, date_created, last_updated) values (3, 'Taking medicine', '15:30:18', '2' at line 1
org.hibernate.exception.SQLGrammarException: could not execute statement

对此有什么想法吗？

Answer 1

repeat 是 reserved keyword in MySQL，需要用反引号转义或使用不同的列名。