Tymeleaf发送的日期始终为空

Question

这是我的html表单：

<form ui-jp="parsley" th:action="@{/users/created}" th:object="${userCreateDto}" method="post">
    <div class="row m-b">
        <div class="col-sm-6">
            <div class="form-group">
                <label>User Valid From</label>
                <input type='date' class="form-control" th:field="*{validFrom}" required/>
            </div>
        </div>
        <div class="col-sm-6">
            <div class="form-group">
                <label>User Valid To</label>
                <input type='date' class="form-control" th:field="*{validTill}" required/>
            </div>
        </div>
    </div>
</form>

@RequestMapping(value = "/created", method = RequestMethod.POST)
public String processCreateUsers(@ModelAttribute UserCreateDto userCreateDto, BindingResult error) {
    log.info("Creating users with this input :"+ userCreateDto.toString());
    this.userService.createUser(userCreateDto);
    return "redirect:/users";
}

这是DTO

public class UserCreateDto {

    private String username;

    private String firstName;

    private String lastName;

    private String password;

    @DateTimeFormat(pattern = "yyyy-mm-dd")
    private Date validFrom;

    @DateTimeFormat(pattern = "yyyy-mm-dd")
    private Date validTill;
}

这里的日期是java.sql.Date

此外，当我导入一个JSON文件时，我有一个用户数组，我能够成功地运行它。

Failed to convert property value of type 'java.lang.String' to required type 'java.sql.Date' for property 'validFrom'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.format.annotation.DateTimeFormat java.sql.Date] for value '2017-12-10'; nested exception is org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [org.joda.time.DateTime] to type [@org.springframework.format.annotation.DateTimeFormat java.sql.Date]

我错过了什么？

注意：java.util.date起作用！

Answer 1

表单需要有一个bean来绑定这些参数。您可以使用@getmapping（和@postmapping)作为速记。

@GetMapping("/theHtmlFormInYourQuestion")
public String createUsers(Model model) {

    model.addAttribute("userCreateDto", new UserCreateDto());
    return "theHtmlFormInYourQuestion";
}

您的表单操作应该使用created而不是users/created，因为这正是您的Java代码所显示的（除非您正在做的其他事情没有在您的问题中发布）。