我正在尝试上传多个文件以及普通表单数据。我以前在 PHP 中实现了这个功能，现在我用 C# 在 ASP.NET MVC4 中实现了这个功能。 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 jquery-1.11.1 Javascript 代码如下所示:
function formSubmit() {
var form = $("form[name='applicationform']");
var data = new FormData(form[0]);
$.ajax(
{
method: "POST",
url: form.attr("action"),
processData: false, // Don't process the files
contentType: false, cache: false, async: false,
data: data,
success: function (data) {
alert(data);
}
});
}
我的 Controller 看起来像这样
[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 抛出对象引用 null 异常 我应该怎么做才能让它运行？
最佳答案
你可以试试这个:
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>
服务器端代码:
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 );
}
}
}
关于javascript - 使用 JQuery 和 MVC4 上传多个文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29792324/