MVC Post 总是请求 returns IIS 错误 500 但与邮递员一起工作

Question

我正在尝试向 IIS 中托管的 webapi 应用程序发送 post 请求。我总是收到 post 请求的错误 500，但获取请求工作正常。下面是我的代码

型号：

  public class LineModel 
  {
    [Key]
    public string ID { get; set; }

    public string No { get; set; }

    public string Name { get; set; }

    public string Title { get; set; }

    public string Code1 { get; set; }

    public string Code2 { get; set; }

    public DateTime Date { get; set; }

    public string Type { get; set; }

    public string Remarks { get; set; }

    public string Status { get; set; }
    
    public List<SubLine> SubLines { get; set; }
 }

Ajax 显示表单的代码：

$(function () {
  $(".surveyType").click(function () {
    var surveyType = $(this).attr("data-bind");
    $.ajax({
        url: "/Aella/Create/",
        data: { "surveyCode": surveyType },
        success: function (data) {
            console.log(data);
            $('#Question').html(data);
            };
        }
    });
});

Ajax 调用 post 请求：

$('body').on('click','#submit-request', function () {
    var formData = $("#create-request").serialize();
    console.log(formData);
    $.ajax({
        url: "/Aella/Create/",
        data: formData,
        type: "POST",
        dataType: 'json',
        contentType: 'application/x-www-form-urlencoded; charset=UTF-8',
        success: function (data) 
        {
            console.log(data);
        }
    });
});

获取请求：

    [HttpGet]
    public ActionResult Create(string surveyCode)
    {           
        questions = GetSurveyQuestions(surveyCode);           
        LineModel model = new LineModel
        {
            SubLines = questions.Select(a => new SubLine()
            {
                Question = a.questionField,
                Code = a.codeField,
                Type = a.question_TypeField.ToString(),
                Survey_Type = a.survey_TypeField,
                Response = "",
                Remark = ""
            }).ToList(),
            Type = surveyCode,
            Date = DateTime.Now
        };
        
        return View(model);
    }

Post方法：

[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Create(LineModel lineModel)
{           
   if(ModelState.IsValid)
   {
      lineModel.Status = "Open";
      foreach(var item in lineModel.SubLines)
      {
        if(item.Type == "Remark")
        {
            item.Remark = item.Response;
            item.Response = "";
        } 
      }
      HttpClient client = new HttpClient
      {
        BaseAddress = new Uri(ConfigurationManager.AppSettings["lineModelLink"].ToString())
      };
      client.DefaultRequestHeaders.Accept.Clear();
      client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
      jsonContent = JsonConvert.SerializeObject(lineModel);
      contentString = new StringContent(jsonContent, Encoding.UTF8, "application/json");
      contentString.Headers.ContentType = new MediaTypeHeaderValue("application/json");
      HttpResponseMessage response = new HttpResponseMessage();
   
      try
      {
        response = await client.PostAsync(ConfigurationManager.AppSettings["lineModelLink"].ToString(), contentString);   
      }
      catch(HttpRequestException ex)
      {
        ErrorController.LogError(ex);
        ViewBag.Response = JsonConvert.DeserializeObject(responseStr);
        if (lineModel.lineModelLines.Count > 0)
        {
            ViewBag.IsQuestionAvailable = true;
        }
        return View(lineModel);
      }
      [...]
    }
   [...]
}

Post人工请求：

    {
    "No":"",
    "Name":"",
    "Title":"",
    "Code1":"",
    "Code2":"",
    "Date":"2021-10-25T00:00:00",
    "Type":"SEC",
    "Remarks":"",
    "Status":"Open",
    "SubLines":
    [
        {
            "Code":"01",
            "Question":"How did you learn about the job opening? ",
            "Type":"Defined",
            "Survey_Type":"SEC",
            "Response":"05",
            "Remark":""
        },
        {
            "Code":"02",
            "Question":"The job description/requirements were clear and understandable",
            "Type":"1-4",
            "Survey_Type":"SEC",
            "Response":"04",
            "Remark":""
        },
        {
            "Code":"03",
            "Question":"It was easy and convenient applying for the position",
            "Type":"1-4",
            "Survey_Type":"SEC",
            "Response":"04",
            "Remark":""
        },
        {
            "Code":"04",
            "Question":"The recruiter was professional.",
            "Type":"1-4",
            "Survey_Type":"SEC",
            "Response":"02",
            "Remark":""
        }
    ]
}

表单（主视图）：

@using (Html.BeginForm("Create", "Aella", FormMethod.Post, new { id = "create-request", enctype = "multipart/form-data" }))
        {
            @Html.AntiForgeryToken()
            <div class="">
                @Html.ValidationSummary(true, "", new { @class = "text-danger" })
                <div id="survey-header" class="survey-shape-border">
                    
                    @Html.EditorFor(model => model.No, new { htmlAttributes = new { @class = "input100" } })
                    @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "input100" } })
                    @Html.EditorFor(model => model.Title, new { htmlAttributes = new { @class = "input100" } })
                                        
                    @Html.EditorFor(model => model.Code1, new { htmlAttributes = new { @class = "input100" } })
                    @Html.EditorFor(model => model.Code2, new { htmlAttributes = new { @class = "input100" } })         
                        
                    @Html.EditorFor(model => model.Date, new { htmlAttributes = new { @class = "input100", @readonly = "readonly" } })
                        
                        @Html.EditorFor(model => model.Type, new { htmlAttributes = new { @class = "input100", @readonly = "readonly" } })
                        @Html.EditorFor(model => model.Remarks, new { htmlAttributes = new { @class = "input100" } })
                                
                        @Html.EditorFor(model => model.Status, new { htmlAttributes = new { @class = "input100" } })
                                
                </div>
                    @foreach (var line in Model.SubLines)
                    {
                        @Html.Partial("_Lines", line)
                    }

                <div class="display-none">
                    <button type="button" value="Create" class="btn-lg" id="submit-request">Submit Survey</button>
                </div>
            </div>
        }

局部视图：

@using HtmlHelpers.BeginCollectionItem;    
<div class="">
    @using (Html.BeginCollectionItem("SubLines"))
    {
        <div>
            @Html.HiddenFor(model => model.ID)
            @Html.HiddenFor(model => model.Type)
            @Html.HiddenFor(model => model.Type)
            @Html.HiddenFor(model => model.Question)    
            @Html.HiddenFor(m => m.Code)
        </div>
        
        if (Model.Type == "Defined")
        {
            <div class="userDefined_6 survey-line-response">
                <label> @Html.RadioButtonFor(model => model.Response, "01")<span>Job Board</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "02")<span>Careers Website</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "03")<span>Linkedin</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "04")<span>Friend/Colleague</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "05")<span>Recruiter</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "06")<span>Others(Please State)</span></label>
            </div>
        }
        if (Model.Type == "1-4")
        {
            <div class="userDefined_4 survey-line-response">

                <label> @Html.RadioButtonFor(model => model.Response, "01")<span>Strongly Disagree</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "02")<span>Disagree</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "03")<span>Agree</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "04")<span>Strongly Agree</span></label>
            </div>
        }
        if (Model.Type == "1-5")
        {
            <div class="userDefined_5 survey-line-response">

                <label> @Html.RadioButtonFor(model => model.Response, "01")<span>1</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "02")<span>2</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "03")<span>3</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "04")<span>4</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "05")<span>5</span></label>
            </div>
        }
        if (Model.Type == "1-15")
        {
            <div class="userDefined_10 survey-line-response">

                <label> @Html.RadioButtonFor(model => model.Response, "01")<span>1</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "02")<span>2</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "03")<span>3</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "04")<span>4</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "05") <span> 5 </span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "06")<span>6</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "07")<span>7</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "08")<span>8</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "09")<span>9</span></label>
                <label> @Html.RadioButtonFor(model => model.Response, "10")<span>10</span></label>
            </div>
        }
        if (Model.Type == "Open")
        {
            <div class="userDefined_Narration survey-line-response">
                @Html.EditorFor(model => model.Response, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Response, "", new { @class = "text-danger" })
            </div>
        }
    }
</div>

来自服务器的响应：

    HTTP/1.1 500 Internal Server Error
    Cache-Control: no-cache
    Pragma: no-cache
    Content-Type: application/json; charset=utf-8
    Expires: -1
    Server: Microsoft-IIS/8.5
    X-AspNet-Version: 4.0.30319
    X-Powered-By: ASP.NET
    Date: Wed, 03 Nov 2021 12:15:35 GMT
    Content-Length: 36

    {"Message":"An error has occurred."}

为此花了好几个小时。我将非常感谢帮助，因为我缺少答案。

Answer 1

你的postajax请求有一个包

    url: "/Survey/CreateSurvey/",

但您的操作是创建。您必须调整操作名称。

而且 Get 操作似乎应该在同一个控制器中，但它也有一个奇怪的 url

   url: "/Aella/Create/",

修复这些错误后，尝试调试应用程序的其他部分，一次一个步骤。因为我可以在您的局部视图中看到很多我以前从未见过的 html 助手，所以我不确定它们是否生成了可以提交的正确 mvc html。所以恕我直言，首先评论部分观点并尝试使工作成为主要观点。在此之后，您可以继续逐行添加部分视图。

Answer 2

关于代码的一切都很好，我观察到服务器上的证书已过期，因此出现错误。谢谢大家

MVC Post 总是请求 returns IIS 错误 500 但与邮递员一起工作

MVC Post request always returns IIS error 500 but works with postman

.net

c#

model-view-controller

post

asp.net-web-api