問題描述
使用 jquery ajax 上傳文件 (file upload using jquery ajax)
I want to upload a image with a description like:
data = '{"filename":"' + myfilename + '", "file":"' + file + '", "description":"' +
description + '"}';
$.ajax({
type: "POST",
url: "filehandler.ashx",
data: data,
success: function (result) {
alert(result);
},
error: function () {
alert("There was error uploading file!");
}
});
how can I do it? I can't read file as HttpPostedFile in generic handler. context.Request.Form also doesn't have any keys.
‑‑‑‑‑
參考解法
方法 1:
I'm sorry, If I not posted fully what I did in question. Anyway I got it to work.
var data = new FormData();
data.append("name", filename);
data.append("file", file);
In generic handler
HttpPostedFile file = context.Request.Files["file"];
string fileName = context.Request.Form["filename"];
Using FormData Objects
方法 2:
you cant post files with ajax you have to post it in a iframe to have the same result
this is what I did
var form = "#myform";
var url = "http://post.it/";
var iframeName = 'iframePost' + (new Date()).getTime();
$('<iframe id="'+iframeName+'" name="' + iframeName + '" style="display:none;"/>').appendTo('body');
$(form).attr('target',iframeName)
.attr('action',url)
.attr('enctype','multipart/form‑data')
.append('<input type="hidden" name="_iframe" value="' + iframeName + '" />');
form.submit();
to have a callback let the iframe return a script with something like
window.parent.callBack(data);
(by Darshana、Darshana、EaterOfCode)