我的控制器中有兩個(gè)映射。這是一個(gè) 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(gè)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>