我有一个运行Spring MVC和Thymeleaf的Spring Boot应用程序。其中一个实体是date实体，其中包含LocalDateTime类型的字段@Entity
public class Purchase {
// Other fields
@DateTimeFormat(pattern = "dd-MM-yyyy")
private LocalDateTime date;
// Getters and setters
}
：
@DateTimeFormat请注意，此字段已添加pattern注释，指定dd-MM-yyyy form.html，其恰好与我的<form id="purchaseForm" th:action="@{/purchases/(form)}"
th:object="${purchase}" action="#" method="post" class="form-horizontal">
<!-- Purchase's date -->
<div class="form-group">
<label class="control-label col-sm-2" for="text">Date</label>
<input class="col-sm-10" type="text" id="date" th:field="*{date}"
th:class="${#fields.hasErrors('date')} ? 'field-error'"/>
</div>
</form>
中定义的相同：
14-12-2017给定日期的格式为PurchaseController。
然后，提交后@Controller
@RequestMapping("/purchases")
public class PurchaseController {
@PostMapping(params = "form")
public ModelAndView create(@Valid Purchase purchase, BindingResult result,
RedirectAttributes redirect) {
// Do stuff
}
}
处理此表单：
Field error in object 'purchase' on field 'date': rejected value [12-12-2017];
codes [typeMismatch.purchase.date,typeMismatch.date,typeMismatch.java.time.LocalDateTime,typeMismatch];
arguments [org.springframework.context.support.DefaultMessageSourceResolvable:
codes [purchase.date,date]; arguments []; default message [date]];
default message [Failed to convert property value of type 'java.lang.String' to required type 'java.time.LocalDateTime' for property 'date';
nested exception is org.springframework.core.convert.ConversionFailedException:
Failed to convert from type [java.lang.String] to type [@org.springframework.format.annotation.DateTimeFormat java.time.LocalDateTime] for value '12-12-2017';
nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [12-12-2017]]
提交后，我收到以下错误：
'12-12-2017'我不太明白原因，因为被拒绝的值@DateTimeFormat遵循我在@DateTimeFormat注释中定义的模式。此外，java.time的javadoc告诉我们它适用于SDL_Log("%s has %i hp out of %i", player1.name, player1.health, player1.maxhealth);
个新类型。
有什么想法吗？提前谢谢。