Javascript 使用JQuery和MVC4进行多文件上传_Javascript_C#_Ajax_Asp.net Mvc 4_Multiple File Upload

Javascript 使用JQuery和MVC4进行多文件上传

javascript c# ajax asp.net-mvc-4

Javascript 使用JQuery和MVC4进行多文件上传,javascript,c#,ajax,asp.net-mvc-4,multiple-file-upload,Javascript,C#,Ajax,Asp.net Mvc 4,Multiple File Upload,我正试图上传多个文件以及正常形式的数据。这是我以前用PHP实现的东西，现在我用C#中的ASP.NET MVC4实现它。我有一个html表单 <form action="/controller/actionane" name="applicationform" class="upload-form" method="post" onsubmit="return false;" enctype="multipart/form-data" id="userform">

我正试图上传多个文件以及正常形式的数据。这是我以前用PHP实现的东西，现在我用C#中的ASP.NET MVC4实现它。我有一个html表单

<form action="/controller/actionane" name="applicationform" class="upload-form" method="post" onsubmit="return false;" enctype="multipart/form-data" id="userform"> 
        <input class="form-control" type="file" class="upload-file" data-max-size="12582912" multiple="multiple" name="attachment[]" value="documents">
        <input class="btn btn-success" type="submit" name="submit" onclick="formSubmit()" />
    </form>

我的控制器是这样的

[HttpPost]
public JsonResult submitApplication(HttpPostedFileBase[] attachment) 
{
                string fil= "";
                foreach (HttpPostedFileBase file in attachment)
                {
                    /*Geting the file name*/
                    string filename = System.IO.Path.GetFileName(file.FileName);
                    fil += filename;
                    /*Saving the file in server folder*/
                    file.SaveAs(Server.MapPath("~/Images/" + filename));
                    string filepathtosave = "Images/" + filename;
                    /*HERE WILL BE YOUR CODE TO SAVE THE FILE DETAIL IN DATA BASE*/
                }

                    return this.Json(fil,JsonRequestBehavior.AllowGet);
}

但这并不是将文件传递给参数引发对象引用null异常我应该怎么做才能让它运行？

您可以尝试以下方法：

客户端代码：

<html>
<head>
<title>Upload Example</title>
<script src="~/Scripts/jquery-2.1.0.intellisense.js"></script>
<script src="~/Scripts/jquery-2.1.0.js"></script>
<script src="~/Scripts/jquery-2.1.0.min.js"></script>
<script>
$(document).ready(function () {
    $("#Upload").click(function () {
        var formData = new FormData();
        var totalFiles = document.getElementById("FileUpload").files.length;
        for (var i = 0; i < totalFiles; i++)
        {
            var file = document.getElementById("FileUpload").files[i];

            formData.append("FileUpload", file);
        }
        $.ajax({
            type: "POST",
            url: '/Home/Upload',
            data: formData,
            dataType: 'json',
            contentType: false,
            processData: false,
            success: function (response) {
                alert('succes!!');
            },
            error: function (error) {
                alert("Failed");
            }
        });
    });
});

</script>
</head>
<body>
<input type="file" id="FileUpload" multiple />
<input type="button" id="Upload" value="Upload" />
</body>
</html>


上传示例
$（文档）.ready（函数（）{
$（“#上载”）。单击（函数（）{
var formData=new formData（）；
var totalFiles=document.getElementById（“FileUpload”）.files.length；
对于（var i=0；i


服务器端代码：
<html>
<head>
<title>Upload Example</title>
<script src="~/Scripts/jquery-2.1.0.intellisense.js"></script>
<script src="~/Scripts/jquery-2.1.0.js"></script>
<script src="~/Scripts/jquery-2.1.0.min.js"></script>
<script>
$(document).ready(function () {
    $("#Upload").click(function () {
        var formData = new FormData();
        var totalFiles = document.getElementById("FileUpload").files.length;
        for (var i = 0; i < totalFiles; i++)
        {
            var file = document.getElementById("FileUpload").files[i];

            formData.append("FileUpload", file);
        }
        $.ajax({
            type: "POST",
            url: '/Home/Upload',
            data: formData,
            dataType: 'json',
            contentType: false,
            processData: false,
            success: function (response) {
                alert('succes!!');
            },
            error: function (error) {
                alert("Failed");
            }
        });
    });
});

</script>
</head>
<body>
<input type="file" id="FileUpload" multiple />
<input type="button" id="Upload" value="Upload" />
</body>
</html>

服务器端
public class HomeController : Controller
{
  [HttpPost]
  public void Upload( )
  {
    for( int i = 0 ; i < Request.Files.Count ; i++ )
    {
      var file = Request.Files[i];
      var fileName = Path.GetFileName( file.FileName );
      var path = Path.Combine( Server.MapPath( "~/[Your_Folder_Name]/" ) , fileName );

      file.SaveAs( path );    
    }
  }
}

公共类HomeController:控制器
{
[HttpPost]
公共无效上载（）
{
对于（int i=0；i
如果您尝试$（$form[name='applicationform']）[0]，会发生什么？在consle中？共享表单的HTML…它在jquery formatMr中获取表单元素。Knelis我已经编辑了我的问题，包括表单的HTML