日期被覆蓋（Spring/Hibernate）
[英]Date gets overwritten (Spring/Hibernate)
問題描述
現在，我的主頁上有一個“預訂”表，顯示有關不同預訂的信息。 其中一個字段是“預訂日期”，它顯示了創建預訂的日期和時間。 但是當我編輯預訂時，它會自動被新日期覆蓋。 我如何防止這種情況發生？
我的預訂艙
@Entity
@Table(name="booking")
public class Booking {
@Id
@Column(name="id")
@GeneratedValue(strategy= GenerationType.IDENTITY)
private Long id;
@ManyToOne
@JoinColumn(name="R_id")
private Restaurant restaurant;
@Column(name="date")
@Temporal(TemporalType.DATE)
private Date date;
@Column(name="start")
private String start;
@Column(name="duration")
private float duration;
@Column(name="amount_of_people")
private int amountOfPeople;
@Column(name="name")
private String name;
@Column(name="contact_preference")
private String contactPreference;
@Column(name="phone_number")
private String phoneNumber;
@Column(name="comments")
private String comments;
// Date that gets overwritten
@Column(name="current_datetime")
@Type(type="timestamp")
private Date currentDatetime;
@Column(name="new_date")
@Type(type="timestamp")
private Date newDate;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Restaurant getRestaurant() {
return restaurant;
}
public void setRestaurant(Restaurant restaurant) {
this.restaurant = restaurant;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public String getStart() {
return start;
}
public void setStart(String start) { this.start = start; }
public float getDuration() {
return duration;
}
public void setDuration(float duration) {
this.duration = duration;
}
public int getAmountOfPeople() {
return amountOfPeople;
}
public void setAmountOfPeople(int amountOfPeople) {
this.amountOfPeople = amountOfPeople;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getContactPreference() {
return contactPreference;
}
public void setContactPreference(String contactPreference) {
this.contactPreference = contactPreference;
}
public String getPhoneNumber() { return phoneNumber; }
public void setPhoneNumber(String phoneNumber) { this.phoneNumber = phoneNumber; }
public String getComments() {
return comments;
}
public void setComments(String comments) {
this.comments = comments;
}
public Date getCurrentDatetime() {
return currentDatetime;
}
public void setCurrentDatetime(Date currentDatetime) { this.currentDatetime = currentDatetime; }
public Date getNewDate() { return newDate; }
public void setNewDate(Date newDate) { this.newDate = newDate; }
// Comparator
public static class BookingDateComparator implements Comparator<Booking> {
@Override
public int compare(Booking booking1, Booking booking2) {
if (booking1.getDate().compareTo(booking2.getDate()) == 0) {
return booking1.getStart().compareTo(booking2.getStart());
}
return booking1.getDate().compareTo(booking2.getDate());
}
}
}
我的 MainController 類中的相關方法：
@RequestMapping(value = "bookings", method = RequestMethod.GET)
public String bookings(Model model) {
List<Booking> bookingList = bookingService.getBookings();
model.addAttribute("bookings", bookingList);
initModelList(model);
return "bookings";
}
@RequestMapping(value = "booking/create", method = RequestMethod.GET)
public String createBooking(Model model) {
model.addAttribute("booking", new Booking());
initModelList(model);
return "newBooking";
}
@RequestMapping(value = "booking/create", method = RequestMethod.POST)
public String createBookingAction(@Valid @ModelAttribute ("booking") Booking booking, BindingResult result, Model model) {
BookingFormValidator bookingFormValidator = new BookingFormValidator();
bookingFormValidator.validate(booking, result);
if (result.hasErrors()) {
initModelList(model);
return "newBooking";
}
bookingService.addBooking(booking);
return "redirect:/bookings";
}
@RequestMapping(value = "booking/edit/{id}", method = RequestMethod.GET)
public String editBooking(@PathVariable Long id, Model model) {
initModelList(model);
Booking booking = bookingService.getBooking(id);
model.addAttribute("booking", booking);
return "editBooking";
}
@RequestMapping(value = "booking/edit/{id}", method = RequestMethod.POST)
public String editBookingAction(@Valid @ModelAttribute ("booking") Booking booking, BindingResult result, Model model) {
BookingFormValidator bookingFormValidator = new BookingFormValidator();
bookingFormValidator.validate(booking, result);
if (result.hasErrors()) {
initModelList(model);
return "editBooking";
}
bookingService.updateBooking(booking);
return "redirect:/bookings";
}
我的主頁的 .jsp
<body>
<jsp:include page="../fragments/menu.jsp"/>
<div id="body">
<section class="content-wrapper main-content clear-fix">
<h2>List of bookings</h2>
<p>
<a href="/restaurant/create">Add restaurant</a>
<a href="/booking/create">Create New Booking</a>
</p>
<table class="">
<tr>
<th>
Booking information
</th>
<th></th>
</tr>
<c:forEach items="${restaurants}" var="restaurants">
<tr>
<td><h3>${restaurants}</h3></td>
<td valign="bottom"><a href="/restaurant/edit/${restaurants.id}">Edit restaurant</a></td>
<tr>
<table>
<col align="left" width="100">
<col align="left" width="60">
<col align="left" width="60">
<col align="left" width="60">
<col align="left" width="60">
<col align="left" width="90">
<col align="left" width="90">
<col align="left" width="90">
<col align="left" width="100">
<col align="left" width="100">
<tr>
<td align="left"><b>Date</b></td>
<td align="left"><b>Start</b></td>
<td align="left"><b>Duration</b></td>
<td align="left"><b># Of People</b></td>
<td align="left"><b>Name</b></td>
<td align="left"><b>Contact Pref.</b></td>
<td align="left"><b>Phone #</b></td>
<td align="left"><b>Comments</b></td>
<td align="left"><b>Booking date</b></td>
</tr>
<c:forEach items="${sortedBooking}" var="sortedBooking">
<c:choose>
<c:when test="${restaurants == sortedBooking.restaurant.restaurantName}">
<tr>
<td>${sortedBooking.date}</td>
<td>${sortedBooking.start}</td>
<td>${sortedBooking.duration}</td>
<td>${sortedBooking.amountOfPeople}</td>
<td>${sortedBooking.name}</td>
<td>${sortedBooking.contactPreference}</td>
<c:choose>
<c:when test="${sortedBooking.phoneNumber.equals('')}">
<td>NO PHONE</td>
</c:when>
<c:otherwise>
<td>${sortedBooking.phoneNumber}</td>
</c:otherwise>
</c:choose>
<c:choose>
<c:when test="${sortedBooking.comments.equals('')}">
<td>NO COMMENTS</td>
</c:when>
<c:otherwise>
<td>${sortedBooking.comments}</td>
</c:otherwise>
</c:choose>
<td>${sortedBooking.currentDatetime}</td>
<td><a href="/booking/edit/${sortedBooking.id}">Edit booking</a></td>
</tr>
</c:when>
</c:choose>
</c:forEach>
</table>
</tr>
</tr>
</c:forEach>
</table>
</section>
</div>
<jsp:include page="../fragments/footer.jsp"/>
</body>
我的editBooking.jsp：
<body>
<jsp:include page="../fragments/menu.jsp"/>
<div id="body">
<section class="content-wrapper main-content clear-fix">
<h2>Edit</h2>
<form:form modelAttribute="booking">
<table>
<tr>
<td>Restaurant*:</td>
<td><form:select path="restaurant.id">
<form:option value="" label="--- Select ---" />
<form:options items="${restaurants}" itemValue="id" itemLabel="restaurantName" />
<td><form:errors path="restaurant.id" cssClass="error"/></td>
</form:select>
</tr>
<tr>
<td>Date*:</td>
<td><form:input path="date" type="date"/></td>
<td><form:errors path="date" cssClass="error"/></td>
</tr>
<tr>
<td>Starting time*:</td>
<td><form:input path="start" type="time"/></td>
<td><form:errors path="start" cssClass="error"/></td>
</tr>
<tr>
<td>Duration*:</td>
<td><form:input path="duration"/></td>
<td><form:errors path="duration" cssClass="error"/></td>
</tr>
<tr>
<td>Amount of people*:</td>
<td><form:input path="amountOfPeople"/></td>
<td><form:errors path="amountOfPeople" cssClass="error"/></td>
</tr>
<tr>
<td>Name*:</td>
<td><form:input path="name"/></td>
<td><form:errors path="name" cssClass="error"/></td>
</tr>
<tr>
<td>Contact preference*:</td>
<td><form:select path="contactPreference">
<form:option value="" label="--- Select ---" />
<form:option value="e-mail" label="E-mail" />
<form:option value="phone" label="Phone" />
<form:option value="other" label="Other" />
<td><form:errors path="contactPreference" cssClass="error"/></td>
</form:select>
</tr>
<tr>
<td>Phone number:</td>
<td><form:input path="phoneNumber"/></td>
<td><form:errors path="phoneNumber" cssClass="error"/></td>
</tr>
<tr>
<td>Comments:</td>
<td><form:textarea path="comments" rows="5" cols="30"/></td>
<td><form:errors path="comments" cssClass="error"/></td>
</tr>
<tr>
<td colspan="3"><input type="submit" /></td>
</tr>
</table>
</form:form>
<div>
<a href="/bookings">Back to List</a>
</div>
</section>
</div>
<jsp:include page="../fragments/footer.jsp"/>
</body>
任何幫助表示贊賞！ 抱歉，帖子太長了。
編輯：我嘗試更改我的代碼以禁用更新，但它仍然不起作用。
@Column(name="current_datetime", updatable=false, nullable=false)
@Type(type="timestamp")
private Date currentDatetime = new Date();
1 個解決方案
解決方案1
2 已采納 2016-03-28 19:33:27
不要使用@Type(type="timestamp")來存儲日期。 在許多數據庫中，時間戳旨在跟蹤更改而不是應用程序邏輯的普通日期字段。 因此，切換到數據庫中的 DATETIME 並刪除@Type注釋，因為 hibernate 已經將Date轉換為正確的類型。
也可以看看：
Spring Hibernate Maven項目獲取nosuchmethod錯誤InjectionMetadata
[英]spring hibernate maven project gets an nosuchmethod error InjectionMetadata
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