通过 html 表单上传大文件（超过 2 GB）
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Large file upload though html form (more than 2 GB)
提问by Nadeem Ullah
Is there anyway to upload a file more than 2 GB, using simple html form upload? Previously I have been uploading large files through silverlight using chunking (dividing a large file into segments and then uploading segments one by one & then reassemble segments at server).
无论如何要上传超过 2 GB 的文件，使用简单的 html 表单上传？以前我一直使用分块通过silverlight上传大文件（将大文件分成多个段，然后一个个上传段，然后在服务器上重新组合段）。
Now, we have a requirement that we just have to use simple html (though GWT) form uploads. Please guide me if there is any way to achieve large file upload this way.
现在，我们有一个要求，我们只需要使用简单的 html（虽然 GWT）表单上传。请指导我是否有任何方法可以通过这种方式实现大文件上传。
If it is impossible to do it using simple html, can anyone guide me about how I can divide & upload a file in segments using flex?
如果使用简单的 html 无法做到这一点，谁能指导我如何使用 flex 分割和上传文件？
回答by BalusC
The limitation of the size of HTTP POST requests is usually not in the HTML side at all. The limitation is more in the server side. The webserver needs to be configured to accept that large POST requests. The default is usually indeed often 2GB and the server will usually return a HTTP 500 error on that. The default limit can often be increased to 4GB, but anything beyond that will hit the border on 32bit systems. On 64bit systems with a 64bit OS, the theoretical border is much higher, 16EB.
HTTP POST 请求大小的限制通常完全不在 HTML 端。限制更多在服务器端。网络服务器需要配置为接受大型 POST 请求。默认值通常确实是 2GB，服务器通常会在此返回 HTTP 500 错误。默认限制通常可以增加到 4GB，但超出此限制的任何内容都将达到 32 位系统的边界。在 64 位操作系统的 64 位系统上，理论边界要高得多，16EB。
If configuring the webserver to accept that large POST requests is not an option, or when you want to go beyond the webserver's limit, then you have no other option than splitting the file in the client side and reassembling the parts in the server side.
如果配置网络服务器以接受大型 POST 请求不是一种选择，或者当您想要超出网络服务器的限制时，那么除了在客户端拆分文件并在服务器端重新组装部件之外别无选择。
Since HTML is just a markup language, it offers no facilities for splitting the file. You really have to use a normal programming language like C# (Silverlight) or Java (Applet) in flavor of a small application which you serve by your webpage. Very maybe it's also possible with Flash or Flex, but don't pin me on that since I do neither.
由于 HTML 只是一种标记语言，它不提供拆分文件的功能。你真的必须使用像 C# (Silverlight) 或 Java (Applet) 这样的普通编程语言来处理你的网页所提供的小型应用程序。很有可能 Flash 或 Flex 也有可能，但不要把我固定在这上面，因为我两者都不做。
Said that, FTP is a much better choice than HTTP for transferring (large) files over network. I'd reconsider the choice of using HTTP for that.
也就是说，在通过网络传输（大）文件方面，FTP 是比 HTTP 更好的选择。我会重新考虑为此使用 HTTP 的选择。
回答by Konga Raju
Use HTML5 File API to upload large files. which has the concept of slicing, so that you can upload large files.
使用 HTML5 File API 上传大文件。里面有切片的概念，可以上传大文件。
var reader= new FileReader();
reader.onload=function(e){
//do whatever you want with result
}
var blob = file.slice(startingByte, endindByte);//slicing file
reader.readAsBinaryString(blob);
回答by Sudhakar Chavan
we created a webapplication (https) (using django/python) which uploads bulk files in to sqlserver database. For this we read the file in chunks, transferred to server through sftp and performed bulk inserts into sqlserver. We benchmarked it for 1 gb filesize and end to process was over in around 1 minute or so.
我们创建了一个网络应用程序（https）（使用 django/python），它将批量文件上传到 sqlserver 数据库。为此，我们分块读取文件，通过 sftp 传输到服务器，并在 sqlserver 中执行批量插入。我们对其进行了 1 gb 文件大小的基准测试，并在大约 1 分钟左右的时间内结束了处理。
回答by parthipang
Use Arivu server for java backend server gradle -> compile 'org.arivu:nioserver:1.0.3' , File size no constraint. Any size can be handled.
将 Arivu 服务器用于 java 后端服务器 gradle -> compile 'org.arivu:nioserver:1.0.3' ，文件大小没有限制。可以处理任何尺寸。
