golang开通微信小程序客服消息

func Kefu(w http.ResponseWriter, req *http.Request)  {

    //2018/11/19 15:45:11 /kf?signature=21db514acf702211d5118488ef65c2e7deef2d53&echostr=711491803160476671&timestamp=1542613511&nonce=1036331002

    query := req.URL.Query()

    fmt.Println("\n------------signature-------------", query["signature"][0])
    fmt.Println("\n------------timestamp-------------",query["timestamp"][0])
    fmt.Println("\n------------nonce-------------", query["nonce"][0])

    echostr:= query["echostr"][0]
    fmt.Println("\n------------echostr-------------", echostr)

    w.Write([]byte(echostr))

}