檔案上傳-ajax
網頁
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>UploadByAjax</title>
<script src="~/Scripts/jquery-2.2.1.js"></script>
</head>
<body>
<div>
<input type="file" name="UploadFile" id="upload" multiple/>
</div>
<script>
$(document).ready(function () {
$('#upload').on('change', function (e) {
//取得檔案
var files = e.target.files;
if (files.length > 0) {
if (window.FormData !== undefined) {
var data = new FormData();
//可上傳多檔案
for (var x = 0; x < files.length; x++) {
data.append(files[x].name, files[x]);
}
$.ajax({
type: "POST",
url: '@Url.Action("UploadByAjax", "FileUpload")',
contentType: false,
processData: false,
data: data,
success: function (result) {
console.log(result);
},
error: function (xhr, status) {
console.log("上傳失敗");
}
});
} else {
alert("此瀏覽器不支援HTML5檔案上傳");
}
}
});
});
</script>
</body>
</html>
Action
取得檔案的方式比較特別，是使用Controller底下的 Request物件來取得。
[HttpPost]
public JsonResult UploadByAjax()
{
//取得目前 HTTP 要求的 HttpRequestBase 物件
foreach (string file in Request.Files)
{
var fileContent = Request.Files[file];
if (fileContent != null && fileContent.ContentLength > 0)
{
// 取得的檔案是stream
var stream = fileContent.InputStream;
var fileName = Path.GetFileName(file);
var path = Path.Combine(Server.MapPath("~/Files/"), fileName);
using (var fileStream = System.IO.File.Create(path))
{
stream.CopyTo(fileStream);
}
}
}
return Json("Successed");
}
參考:
https://cmatskas.com/upload-files-in-asp-net-mvc-with-javascript-and-c/
http://stackoverflow.com/questions/19042116/ajax-beginform-in-mvc-to-upload-files
https://www.new-bamboo.co.uk/blog/2012/01/10/ridiculously-simple-ajax-uploads-with-formdata/
一天一分享，身體好健康。
該追究的不是過去的原因，而是現在的目的。