我可以使用 HTTP 范围标头“故意"加载部分文件吗?

问题描述

我正在使用 HTTP 范围标头(规范).

I'm playing around with the HTTP range header (specs).

据我了解，我可以设置文件的字节范围 ala

From what I understand I can set byte ranges of files ala

0-199/2000
200-499/2000
500-799/2000
etc

问题:
假设我只想访问文件的某些范围，是否可以指定这些范围，然后使用我收到的不完整"数据?我正在过滤一个大的日志文件，所以我很好奇这样的事情是否可行.

Question:
Say I only want to access certain ranges of a file, would it be possible to specify these ranges and then work with the "incomplete" data I received? I'm playing around with filtering a large log file, so I'm curious if something like this would work.

感谢您的意见！

推荐答案

你是对的，你在评论中发布的链接可能是最好的方法.因为你的问题听起来很有趣，所以我试了一下.你可能做到了，但这里有一个片段(可能会看到其他片段)

You are right the link which you posted in the comment would be probably the best approche. As your question sounded interesting i tried it out. You probably did it, but here is an snippet(for other that may come looking)

var xmlhttp=new XMLHttpRequest();
xmlhttp.open("GET","data.dat",false);
xmlhttp.setRequestHeader("Range", "bytes=100-200");
xmlhttp.send();
console.info(xmlhttp); //--> returns only the partial content
// Tested on Win7 with chrome 46+

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