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

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生命不止,继续go go go!!!

这里介绍一下,golang如何生成二维码,当然是面向github编程了。

QRCode

百度百科:
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

生成二维码图片

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")
    }
}

结果:

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

生成二维码图片

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)

    file,_ := os.Create("qr2.png")
    defer file.Close()

    png.Encode(file,qrCode)
}

结果:

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)
}

输出
http://blog.csdn.net/wangshubo1989

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