如何设置从浏览器下载的文件名？ [英] How to set name of file downloaded from browser?

问题描述

我正在编写一个Web应用程序，其中包括允许用户将文件上传到我的服务器。为了防止名称冲突和组织文件，我们将它们重命名在我的服务器上。通过跟踪原始文件名，我可以与文件的所有者进行通信，而无需知道我在后端更改了文件名。也就是说，直到他们去做文件下载。在这种情况下，系统会提示您下载一个不熟悉的名称的文件。

I'm writing a web application that, among other things, allows users to upload files to my server. In order to prevent name clashes and to organize the files, I rename them once they are put on my server. By keeping track of the original file name I can communicate with the file's owner without them ever knowing I changed the file name on the back end. That is, until they go do download the file. In that case they're prompted to download a file with a unfamiliar name.

我的问题是，是否有任何方式指定要下载的文件的名称只是HTML？所以用户上传一个名为abc.txt的文件，并将其重命名为xyz.txt，但是当它们下载时，我希望浏览器默认将文件保存为abc.txt。如果这是不可能的只是HTML，有什么办法吗？

My question is, is there any way to specify the name of a file to be downloaded using just HTML? So a user uploads a file named 'abc.txt' and I rename it to 'xyz.txt', but when they download it I want the browser to save the file as 'abc.txt' by default. If this isn't possible with just HTML, is there any way to do it?

推荐答案

找不到办法HTML。我想你需要一个服务器端脚本，它将输出一个内容处理头。在PHP中，这样做是这样的：

Can't find a way in HTML. I think you'll need a server-side script which will output a content-disposition header. In php this is done like this:

header('Content-Disposition: attachment; filename="downloaded.pdf"');

如果您希望提供默认文件名，但不能自动下载，这似乎是有效的。 p>

if you wish to provide a default filename, but not automatic download, this seems to work.

header('Content-Disposition: filename="filetodownload.jpg"');

事实上，它是直接为您的文件提供服务的服务器，因此您无法进行交互使用HTML，因为HTML根本不涉及。

In fact, it is the server that is directly serving your files, so you have no way to interact with it from HTML, as HTML is not involved at all.

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