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thymeleaf spring mvc form-bean名称既不是bindingresult也不是plain目标对象

thymeleaf spring-boot spring-mvc

PDStat · 技术社区 · 7 年前

我有一个thymeleaf表单,在提交后抛出以下异常

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute

我读了几个答案,建议 BindingResult 直接在控制器方法中的模型属性之后,但这似乎并没有解决它。这是我的东西

<form action="#" th:action="@{/capturedetails}" th:object="${command}" method="post">
  <div class="form-group" th:if="${mobilePhone} == null">
    <label for="mobilePhone">Mobile Phone</label> <input
      type="tel" class="form-control"
      id="mobilePhone"
      placeholder="Mobile Phone no." th:field="*{mobilePhone}"></input>
  </div>
  <div class="form-group" th:if="${secondEmail} == null">
    <label for="secondEmail">Secondary Email</label>
    <input type="email" class="form-control"
      id="secondEmail" placeholder="Secondary Email" th:field="*{secondEmail}"></input>
  </div>
  <button type="submit">Submit</button>
</form>

控制器方法

@PostMapping(value = "/capturedetails")
public String updateProfile(@ModelAttribute("command") CaptureDetailsFormCommand command, BindingResult bindingResult, Model model) {
    model.addAttribute("command", command);
    return "redirect: someWhere";
}

以及命令对象

public class CaptureDetailsFormCommand {

    private String mobilePhone;

    private String secondEmail;

    public String getMobilePhone() {
        return mobilePhone;
    }

    public void setMobilePhone(String mobilePhone) {
        this.mobilePhone = mobilePhone;
    }

    public String getSecondEmail() {
        return secondEmail;
    }

    public void setSecondEmail(String secondEmail) {
        this.secondEmail = secondEmail;
    }

}

2 回复 | 直到 7 年前

karen 7 年前

将模型属性的名称添加到表单中,如下所示:

<form action="#" modelAttribute="command" ...

并检查bindingresult是否没有这样的错误:

@PostMapping(value = "/capturedetails")
public String updateProfile(@ModelAttribute("command") CaptureDetailsFormCommand command, BindingResult bindingResult, Model model) {

    if (bindingResult.hasErrors()) {
       return "error"; //This should return some kind of error
    }
    ....

PDStat 7 年前

好吧,按照我通常的方式,我自己解决了。问题实际上是在GET映射中,而不是在POST映射中,例如我需要

@GetMapping(value = "/capturedetails")
public ModelAndView captureDetails() {
    ModelAndView mav = new ModelAndView("capturedetails");
    mav.addObject("command", new CaptureDetailsFormCommand());
    return mav;
}

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