如何在不使用Flash的情况下监控文件上传?

I've been looking for a way to monitor file uploading information without using flash, but probably using ajax, i suppose. I want to monitor speed and percentage of finished file upload.

我一直在寻找一种方法来监控文件上传信息而不使用flash，但我想可能是使用ajax。我想监控速度和完成文件上传的百分比。

Do you know of any resource that describes how to do that, or what i should follow to do it ?

你知道有什么资源可以描述如何去做，或者我应该遵循什么去做吗?

2 个解决方案

#1

In the pre-HTML5 world I believe this requires web-server support. I've used this Apache module successfully in the past:

在html5之前，我认为这需要web服务器的支持。我在过去成功地使用了这个Apache模块:

http://piotrsarnacki.com/2008/06/18/upload-progress-bar-with-mod_passenger-and-apache/

#2

The only way without flash is to do it on the server. The gist is:

没有flash的唯一方法是在服务器上执行。要点是:

Start the file upload
启动文件上传
Open a streaming connection to the server
打开到服务器的流连接
Have the server read the post headers to tell you how large the file is going to be
服务器是否读取了post头信息来告诉您文件的大小
Have the server repeatedly check the file size (in /tmp generally) to see how complete it is
让服务器反复检查文件大小(通常在/tmp中)，看看它有多完整
stream the % done back to the client
将所做的%流回客户端

I've done it before in other languages, but never in ruby, so not sure of a project that's done it, sorry.

我以前用其他语言做过，但从来没有用过ruby，所以我不确定哪个项目做过，对不起。

#1