使用XHR上传二进制字符串WebKit中/铬(相当于Firefox的sendAsBinary) [英] Uploading a binary string in WebKit/Chrome using XHR (equivalent to Firefox's sendAsBinary)
问题描述
我正在使用多个尖端的WebKit功能的Web应用程序。它本质上做到这一点:读取与的FileReader
,每个文件解压缩到使用JavaScript库解压缩一个字符串,和岗位使用XMLHtt prequest每个文件的本地文件。这个伟大的工程为文本文件,但不幸的是它会损坏二进制文件(在这种情况下,图像)。火狐有解决这个问题的一个 sendAsBinary
方法,但它是非标准的,而且更重要的是,它不会对我们赖以的WebKit / Chrome浏览器其他功能。
I'm working on a webapp that uses several cutting-edge WebKit features. It essentially does this: reads a local file with the FileReader
, unzips each file into a string using a JavaScript unzip library, and POSTs each file using XMLHttpRequest. This works great for text files, but unfortunately it corrupts binary files (in this case, images). Firefox has a sendAsBinary
method that solves this problem, but it is non-standard, and more to the point, it doesn't work on WebKit/Chrome which we depend on for other features.
有解决方法一吨,而且至今他们没有为我工作:
There are a TON of workarounds, and so far none of them work for me:
- 惩戒页眉,边界等等在一个长的字符串(这样的)。
- XHR对象上设置一系列的头(这样)
- 使用
BlobBuilder
,将字符串的生成器,并使用getBlob
来得到一个blob上传(在这个在Chrome问题线程建议 )
- Mocking a file upload request with headers, boundaries, and so forth in a long string (like this).
- Setting a bunch of headers on the xhr object (as such)
- Using the
BlobBuilder
, appending the string to the builder, and usinggetBlob
to get a blob to upload (as recommended in the Chrome issue thread about this)
我在找什么,最重要的,是一个向前兼容的解决方案。谢谢!
What I'm looking for, most of all, is a forward-compatible solution. Thanks!
推荐答案
我有同样的问题。
对于我来说这一次的工作:
This one worked for me:
XMLHttpRequest.prototype.sendAsBinary = function(datastr) {
function byteValue(x) {
return x.charCodeAt(0) & 0xff;
}
var ords = Array.prototype.map.call(datastr, byteValue);
var ui8a = new Uint8Array(ords);
this.send(ui8a.buffer);
}
点击这里:<一href=\"http://javascript0.org/wiki/Portable_sendAsBinary\">http://javascript0.org/wiki/Portable_sendAsBinary
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