Thymeleaf 模板中缺少必需的正文

Question

我正在尝试使用此方法更新客户信息这是一种经典的更新方法，我将 DTO 作为主体并设置变量。

@RequestMapping(path = "/updateCustomerForm/{identityNumber}")
    public String updateCustomerForm(@PathVariable("identityNumber") String identityNumber,@RequestBody CustomerDTO customer){
        customerService.updateCustomer(identityNumber,customer);
        return "redirect:/customer/showList";
    }

这是我的 thymeleaf

 <form th:action="@{/customer/updateCustomerForm/*{identityNumber}}" th:object="${customer}" method="put">
    <input name="_method" type="hidden" value="put" />
    <input type="text" th:field="*{identityNumber}" placeholder="Enter identity number" class="form-control col-4 mb-4" />

    <input type="text" th:field="*{name}" placeholder="Enter name" class="form-control col-4 mb-4" />

    <input type="text" th:field="*{surname}" placeholder="Enter surname" class="form-control col-4 mb-4" />

    <input type="text" th:field="*{phoneNumber}" placeholder="Enter phone number" class="form-control col-4 mb-4" />

    <input type="text" th:field="*{salary}" placeholder="Enter salary" class="form-control col-4 mb-4" />

    <input type="text" th:field="*{age}" placeholder="Enter age" class="form-control col-4 mb-4" />

    <button class="btn btn-primary col-2" type="submit">Save</button>
    <input type="hidden" th:field="*{identityNumber}" />
  </form>

错误是必需的正文丢失。

有人可以帮忙解决这个话题吗？

Answer 1

Thymeleaf doesn't use JSON so you can't use @RequestBody to deserilize your message, since you are not getting JSON when you submit thymeleaf form. 您可以使用@ModelAttribute来避免手动处理每个表单字段。 Thymeleaf 和 Spring 让您可以使用我刚才提到的注释将它们捆绑在一起。

所以，像这样：

@RequestMapping(path = "/updateCustomerForm/{identityNumber}")
    public String updateCustomerForm(@PathVariable("identityNumber") String identityNumber,@ModelAttribute CustomerDTO customer){
        customerService.updateCustomer(identityNumber,customer);
        return "redirect:/customer/showList";
    }

应该按预期工作。 有关实施细节，请查看此帖子