signParams := map[string]string{ "appid":            app_id, "mch_id":           mch_id, "nonce_str":        nonceStr, "body":             body, "out_trade_no":     outTradeNo, "total_fee":        fmt.Sprintf("%d", totalFee), "spbill_create_ip": spbillCreateIP, "notify_url":       notifyURL, "trade_type":       tradeType, } sign := generateSign(signParams, key) fmt.Println("Sign:", sign) func generateSign(params map[string]string, key string) string { var keys []string for k := range params { if k != "sign" && params[k] != "" { keys = append(keys, k) } } sort.Strings(keys) var signStr string for _, k := range keys { signStr += k + "=" + params[k] + "&" } signStr += "key=" + key hash := md5.Sum([]byte(signStr)) return strings.ToUpper(hex.EncodeToString(hash[:])) }

pc网站微信支付，appid 是我的 APPID吗