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Usually, after we upload the resource file, in order to avoid file name conflict, the file name will be changed to a meaningless paragraph of characters. This character may be generated by md5 or a string generated in some other way. At this point, when downloading, the default saved file name will be this meaningless file name (figure 1).

In fact, nginx supports renaming when downloading, making the file name more friendly.

Nginx is also easy to configure: just add the following lines:

The copy code is as follows:

Location *. *\. (doc | txt | jar | zip | apk) (\?. *)? $

{

If ($request_uri ~ * ^. * / (. *). (doc | txt | jar | zip | apk) (\? n = ([^ &] +)) $) {

Add_header content-disposition "attachment;filename=$arg_n.$2"

}

Log_not_found off

Expires 30d

Break

}

The if line is more critical. When configured in this way, when the n parameter is not passed, it will be saved by the original name. There are no empty names.

Because it is specified in the form of header, cdn will save this header information and will behave the same way when the content is distributed.

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