我的控制器中有兩個映射。這是一個 GET 映射：@RequestMapping(value="/items/book-list/edit", method = RequestMethod.GET)public String showEditBookPage(@RequestParam Long id, ModelMap model){ Book book = bookService.findBookById(id); model.addAttribute("editForm", book); LOG.info("Logged modified date once page is loaded: " + book.getModifyDate()); return "admin/book";}此映射僅用于顯示小窗體的 book.jsp 頁面。我還有另一個具有相同值但使用 POST 方法的映射，用于提交表單。 @RequestMapping(value="/items/book-list/edit", method = RequestMethod.POST)public String updateBook(@ModelAttribute("editForm") @Valid Book bookForm, BindingResult result, ModelMap model){ if(result.hasErrors()){ return "/admin/book"; } LOG.info("Logged modified date before Save object: " + bookForm.getModifyDate()); LOG.info("Logged author before Save object: " + bookForm.getAuthor()); bookService.saveBook(bookForm); LOG.info("Logged modified date after Save object: " + bookForm.getModifyDate()); LOG.info("Logged author after Save object: " + bookForm.getAuthor()); return "admin/book";}我的書.jsp：<form:form method="post" modelAttribute="editForm" > <div class="row border py-4"> <div class="col-sm-6"> <spring:bind path="title"> <div class="form-group"> <form:label path="title" for="title">Book title</form:label> <form:input path="title" type="text" class="form-control" id="title" cssErrorClass="form-control border border-danger"/> </div> </div> </form:form>
3 回答
波斯汪
TA貢獻1811條經驗 獲得超4個贊
嘗試為該LocalDateTime字段顯式添加反序列化器：
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
@CreationTimestamp
@Column(name="create_date", updatable = false, nullable = false)
private LocalDateTime createDate;
還有你的反序列化類：
public class LocalDateTimeDeserializer extends StdDeserializer<LocalDateTime> {
@Override
public LocalDate deserialize(JsonParser jsonParser, DeserializationContext ctx)
throws IOException, JsonProcessingException {
// parse the String date into LocalDateTime object as it fits you
}
}
UYOU
TA貢獻1878條經驗 獲得超4個贊
您忘記在 My book.jsp: 中添加 modify_date 字段，因為只有字段日期會發布，因為它是新請求，而您保存在模型中的所有舊字段都不會隨請求一起發布。所以有兩個選項添加輸入文本字段來更改日期。
或者您將在保存之前手動設置日期
bookForm.setModifyDate(new Date());
bookService.saveBook(bookForm);
或者你也可以添加 @UpdateTimestamp 如果你想加侖本地日期和時間
@UpdateTimestamp
private LocalDateTime modifyDate;
添加回答
舉報
0/150
提交
取消