Go生成读取二维码(skip2/go-qrcode和boombuler/barcode)

程序员的酒和故事

发布于 2020-03-04 08:21:52

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代码可运行

文章被收录于专栏：程序员的酒和故事程序员的酒和故事

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代码可运行

QR Code码，是由Denso公司于1994年9月研制的一种矩阵二维码符号，它具有一维条码及其它二维条码所具有的信息容量大、可靠性高、可表示汉字及图象多种文字信息、保密防伪性强等优点。

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生成二维码

github地址：https://github.com/skip2/go-qrcode

star 211

获取：

go get skip2/go-qrcode

package main


import 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")
  }
}

###boombuler/barcode生成二维码

github地址：https://github.com/boombuler/barcode

star 300

获取：

go get github.com/boombuler/barcode

package main


import (
  "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)
}

###tuotoo/qrcode识别二维码

github地址：https://github.com/tuotoo/qrcode

star 13

获取：

go get github.com/tuotoo/qrcode

读取二维码图片：

package main


import (
  "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)
}