Golang用户下载完成后如何删除生成的zip文件？

Question

I'm developing a website using beego

I'm having a zip file generated to let user download from my website. However,I don't know when to delete the file. Is there a way for me to know if user have finished download the zip file, so I could delete it from disk?

Or, Can I generate zip file on-the-fly and past the *zip.File to net/http? I see http.ServeFile() accept a ReadSeeker, yet I think zip.File don't satisfy ReadSeeker interface according to the doc.

Is there a good way to do file delete on my situation?

Answer 1

Import "os" and run the following line:

os.Remove(filename)

Edit: The only way I could see this happening is by using an ajax library to download the files from an api then call a different api on finish. Normal ajax calls wont work here as all browsers wont allow ajax to access the disk directly, so the only way to do this is by using a library like this one http://johnculviner.com/jquery-file-download-plugin-for-ajax-like-feature-rich-file-downloads/

The library api can leverage things like success and failure callbacks in the following way:

$.fileDownload('/url/to/download.pdf', {
    successCallback: function (url) {

        //do another ajax call to delete the file...
    },
    failCallback: function (html, url) {
        //handle failure...
    }
});