package main
import (
"github.com/boombuler/barcode"
"github.com/boombuler/barcode/qr"
"image"
"image/png"
"log"
"os"
)
func writePng(filename string, img image.Image) {
file, err := os.Create(filename)
if err != nil {
log.Fatal(err)
}
err = png.Encode(file, img)
// err = jpeg.Encode(file, img, &jpeg.Options{100}) //图像质量值为100，是最好的图像显示
if err != nil {
log.Fatal(err)
}
file.Close()
log.Println(file.Name())
}
func main() {
base64 := "123456"
log.Println("Original data:", base64)
code, err := qr.Encode(base64, qr.L, qr.Unicode)
// code, err := code39.Encode(base64)
if err != nil {
log.Fatal(err)
}
log.Println("Encoded data: ", code.Content())
if base64 != code.Content() {
log.Fatal("data differs")
}
code, err = barcode.Scale(code, 300, 300)
if err != nil {
log.Fatal(err)
}
writePng("test.png", code)
}