golang生成二维码

package聽util

import聽(
	"github.com/qpliu/qrencode-go/qrencode"
	"image/png"
	"io"
	"net/http"
)

const聽(
	ECLevelM聽=聽qrencode.ECLevel(0)
	ECLevelL聽=聽qrencode.ECLevel(1)
	ECLevelH聽=聽qrencode.ECLevel(2)
	ECLevelQ聽=聽qrencode.ECLevel(3)
)

func聽NewHttpQr(w聽http.ResponseWriter,聽str聽string)聽error聽{
	w.Header().Set("ContentType",聽"image/png")
	bit,聽_聽:=聽qrencode.Encode(str,聽ECLevelM)
	img聽:=聽bit.ImageWithMargin(10,聽1)
	return聽png.Encode(w,聽img)
}
func聽NewQr(w聽io.Writer,聽str聽string)聽error聽{
	bit,聽_聽:=聽qrencode.Encode(str,聽ECLevelM)
	img聽:=聽bit.ImageWithMargin(10,聽1)
	return聽png.Encode(w,聽img)
}

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