是否可以从http标头中找到文件名

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通常在下载文件时，假设使用QNetworkAccessManager，链接末尾不存在文件名。在这种情况下如何获得正确的文件名。即使链接不包含名称提示，firefox也会始终使用其正确的名称和扩展名下载该文件。我们可以使用mime-types获得一些扩展，但是文件名是什么。

Usually when downloading files, suppose using QNetworkAccessManager, the filename is not present at the end of link. How to get proper file names in that case. Even if link doesn't contain a hint of name, firefox always downloads the file with its proper name and extension. We can get a hint of extention using mime-types but what about file names.

推荐答案

是的。这是 Content-Disposition：附件; filename =< file name.ext> 标头。有一个强烈建议将内容类型设置为 application / octet-stream ，因此浏览器及其插件不会试图打开它。

Yes. It's the Content-Disposition: attachment; filename=<file name.ext> header. There's a strong suggestion to set the content type to application/octet-stream so browsers and their plugins are not tempted to open it instead.