Golang excel file reading
<p>I'm using tealeg xlsx library to read an excel file <a href="https://github.com/tealeg/xlsx" rel="nofollow">https://github.com/tealeg/xlsx</a> . They have documentation here <a href="https://godoc.org/github.com/tealeg/" rel="nofollow">https://godoc.org/github.com/tealeg/</a> . It works perfectly fine if I call the <code>OpenFile()</code> by local directory, but I wanted to use an <code>http.Request.FormFile()</code> return object which is of type <code>multipart.Form</code>.  How do I use this file to be read by the tealeg package?</p>

<p>Tealeg's <code>OpenReaderAt()</code> looks like something I should use, but the multipart. Form object returned from <code>http.Request.FormFile()</code> returns a file interface but I'm not sure how to access the readerAt object? <a href="https://golang.org/pkg/mime/multipart/#File" rel="nofollow">https://golang.org/pkg/mime/multipart/#File</a></p>