Go實戰 golang中生成讀取二維碼 skip2/go qrcode和boombuler/barcode
阿新 • • 發佈:2018-12-19
生命不止,繼續go go go!!!
這裡介紹一下,golang如何生成二維碼,當然是面向github程式設計了。
QRCode
百度百科: QR Code碼,是由Denso公司於1994年9月研製的一種矩陣二維碼符號,它具有一維條碼及其它二維條碼所具有的資訊容量大、可靠性高、可表示漢字及圖象多種文字資訊、保密防偽性強等優點。
wiki: QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to efficiently store data; extensions may also be used
skip2/go-qrcode生成二維碼
獲取:
go get skip2/go-qrcode
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生成二維碼圖片:
package mainimport qrcode "github.com/skip2/go-qrcode"import "fmt"func main() { err := qrcode.WriteFile("http://blog.csdn.net/wangshubo1989", qrcode.Medium, 256, "qr.png") if err != nil { fmt.Println("write error") }}
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結果:
boombuler/barcode生成二維碼
獲取:
go get github.com/boombuler/barcode
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生成二維碼圖片:
package mainimport ( "image/png" "os" "github.com/boombuler/barcode" "github.com/boombuler/barcode/qr")func main() { qrCode, _ := qr.Encode("http://blog.csdn.net/wangshubo1989", qr.M, qr.Auto) qrCode, _ = barcode.Scale(qrCode, 256, 256) file, _ := os.Create("qr2.png" ) defer file.Close() png.Encode(file, qrCode)}
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結果:
tuotoo/qrcode識別二維碼
go get github.com/tuotoo/qrcode
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讀取二維碼圖片:
package mainimport ( "fmt" "os" "github.com/tuotoo/qrcode")func main() { fi, err := os.Open("qrcode.png") if err != nil { fmt.Println(err.Error()) return } defer fi.Close() qrmatrix, err := qrcode.Decode(fi) if err != nil { fmt.Println(err.Error()) return } fmt.Println(qrmatrix.Content)}
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