如何上传字符串的文件与jQuery或其它JS框架 [英] How to upload string as file with jQuery or other js framework

问题描述

使用JavaScript，我有字符串的文件（使用了Ajax请求）。

Using javascript, I have a file in string (got with ajax request).

如何上传的文件到服务器的另一个Ajax请求？

How to upload it as file to server by another ajax request ?

推荐答案

您需要设置内容类型请求头的multipart /表单-data ，并与格式玩了一下，<一个href="http://stackoverflow.com/questions/2198470/javascript-uploading-a-file-without-a-file/2198524#2198524">I写这篇在纯醇'的JavaScript（TM），但你可以很容易地返工的库：

You need to set the Content-type request header to multipart/form-data and play around with the format a little, I wrote this in Plain Ol' JavaScript (tm) but you could easily rework it for a library:

编辑：有我的咖啡了，所以修改了它的jQuery（无库版本<一href="http://stackoverflow.com/questions/2198470/javascript-uploading-a-file-without-a-file/2198524#2198524">here):

had my coffee now, so modified it for jQuery (no-library version here):

// Define a boundary, I stole this from IE but you can use any string AFAIK
var boundary = "---------------------------7da24f2e50046";
var body = '--' + boundary + '\r\n'
         // Parameter name is "file" and local filename is "temp.txt"
         + 'Content-Disposition: form-data; name="file";'
         + 'filename="temp.txt"\r\n'
         // Add the file's mime-type
         + 'Content-type: plain/text\r\n\r\n'
         // Add your data:
         + data + '\r\n'
         + '--'+ boundary + '--';

$.ajax({
    contentType: "multipart/form-data; boundary="+boundary,
    data: body,
    type: "POST",
    url: "http://asite.com/apage.php",
    success: function (data, status) {
    }
});

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