golang 解析二维码 (golang qrcode detect)
package main
import (
"fmt"
"image"
_ "image/gif"
_ "image/jpeg"
_ "image/png"
"github.com/makiuchi-d/gozxing"
"github.com/makiuchi-d/gozxing/qrcode"
"github.com/gin-gonic/gin"
"net/http"
"io"
)
func main() {
router := gin.Default()
router.POST("/upload", func(c *gin.Context) {
// The default memory allocation is 10M
file, err := c.FormFile("filename")
if err != nil {
c.String(http.StatusBadRequest, fmt.Sprintf("get form err: %s", err.Error()))
return
}
//文件大小限制
if file.Size > (10 << 20) {
c.String(http.StatusBadRequest, fmt.Sprintf("get form err: %s", "文件太大,请重新上传"))
return
}
c.String(http.StatusOK, fmt.Sprintf("File %s uploaded success", file.Filename))
//fmt.Println(file.Filename, "文件名")
fi, err := file.Open()
if err != nil {
fmt.Println(err)
}
defer fi.Close()
str := GetPaymentStr(fi).String()
fmt.Println("qrcode_url:", str)
})
router.Run(":8000")
}
func GetPaymentStr(fi io.Reader) (paymentCodeUrl *gozxing.Result) {
img, _, err := image.Decode(fi)
if err != nil {
fmt.Println(err)
}
// prepare BinaryBitmap
bmp, _ := gozxing.NewBinaryBitmapFromImage(img)
// decode image
qrReader := qrcode.NewQRCodeReader()
result, err := qrReader.Decode(bmp, nil)
if err != nil {
fmt.Println(err)
}
return result
}