無法發佈CSV文件上傳到控制器操作

Question

我有一個問題發佈csv文件到我的後臺操作方法。我在Controller PropertyController中有一個名爲UploadPropertyCSV的操作方法，用於處理文件並將其添加到數據庫中，但由於某種原因，當我單擊提交時，文件從不碰到操作方法，只是刷新頁面並不執行任何操作。我的前端代碼如下所示：

<form id="Form2" method ="post" name="Form2" enctype="multipart/form-data"> 
    <input type="file" name="file" id="file" multiple /> 
    <input type="submit" value="Upload" /> 
</form> 

<script> 
    $(function() { 
     $("#Form2").submit(function (event) { 
      var formData = new FormData($("#Form2").get(0)); 
      $.ajax({ 
       url: "Property/UploadPropertyCSV", 
       type: 'POST', 
       dataType: 'json', 
       data: formData, 
       processData: false, 
       contentType: false, 
       success: function (result) { 
        alert(result.Message) 
       } 
      }) 
     }); 
    }); 
</script> 

我的操作方法返回要顯示在警報按照以下方法JSON消息：

public ActionResult UploadPropertyCSV(HttpPostedFileBase file) 
     { 
      List<PropertyModel> properties = new List<PropertyModel>(); 
      TestD dbContext = new TestDB(); 
      foreach (string requestFiles in Request.Files) 
      { 
       if (file != null && file.ContentLength > 0 && file.FileName.EndsWith(".csv")) 
       { 
        using(StreamReader str = new StreamReader(file.InputStream)) 
        { 
         using(CsvHelper.CsvReader theReader = new CsvHelper.CsvReader(str)) 
         { 
          int rowCount = 0; 
          while (theReader.Read()) 
          { 
           try { 
           rowCount++; 
           //theReader.Configuration.HasHeaderRecord = true; 
           //if (theReader.IsRecordEmpty()) 
           //{ 
           // RIMUtil.LogError("Empty Row: " + rowCount); 
           //} 
            RIMUtil.PropertyUploadCSVRowHelper row = new RIMUtil.PropertyUploadCSVRowHelper() 
            { 
             UnitNumber = theReader.GetField(0), 
             StreetNumber = theReader.GetField(1), 
             StreetName = theReader.GetField(2), 
             City = theReader.GetField(3), 
             PostalCode = theReader.GetField(4), 
             Country = theReader.GetField(5), 
             NumberOfBedrooms = theReader.GetField(6), 
             NumberOfBathrooms = theReader.GetField(7), 
             NumberOfCarSpaces = theReader.GetField(8), 
             KeyNumber = theReader.GetField(9), 
             ExternalPropertyID = theReader.GetField(10),// Renamed to extPropertyID 
             IsVacant = theReader.GetField(11), 
             PropertyManagerId = theReader.GetField(12), 
             BuildingName = theReader.GetField(13) 
            }; 


           // Missing field checks 
           List<string> missingFields = new List<string>(); 

           if (missingFields.Count > 0) 
           { 
            RIMUtil.LogError("Row: " + rowCount + "Has a missing mandatory field"); 
            return Json(new { Success = false, Message = "Error: Missing mandatory field!" }); 
           } 

           else 
           { 
            // Invalid field checks 
             if (invalidFields.Count > 0) 
             { 
              return Json(new { Success = false, Message = "Error: An invalid entry exists!" }); 
             } 

             else 
             { 
              Property property = new Property(); 
              //object creation stuff here 

              dbContext.Properties.Add(property); 
              dbContext.SaveChanges(); 
             } 
            } 
           }catch(Exception e) 
           { 
            return Json(new { Success = true, Message = "CSV is formatted incorrectly" }); 
           } 
          } 

          return Json(new { Success = true, Message = "Success!" }); 
         } 
        } 
       } 
       return Json(new { Success = false, Message = "Empty file or wrong file format!" }); 
      } 
      return Json(new { Success = false, Message = "Error Occured!" }); 
     } 

有沒有更好的辦法，我可以寫這個功能？ JSON返回的消息警報也沒有響應。

如果有人有更好的方式來寫我的前端代碼或解決方案的任何建議，將不勝感激！提前

Answer 1

您需要使用的preventDefault確保Ajax調用

由於是由不提交表單。