drby30217 2016-10-22 00:09
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Golang Excel文件读取

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

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

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  • douchunxian9740 2016-10-22 03:22
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    func OpenReaderAt(r io.ReaderAt, size int64) (*File, error)

    xlsx.OpenReaderAt takes in an io.ReaderAt interface and multipart.File also implements io.ReaderAt.

    So you can directly pass it to xlsx.OpenReaderAt

    var (
    file multipart.File
    size int64
    err error
    )
    
    file, _,err = req.FormFile("key")
    // size = // Calculate size
    xlsx.OpenReaderAt(file,size)
    
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