func main() {
    r := gin.Default()
    r.GET("/pay", tools.WebPageAlipay)
    r.GET("/return", tools.AliPayNotify)
    r.Run(":8100")
}

var (
    appID = "你的支付寶ID"
    privateKey = "你的支付寶私鑰"
    client, _  = alipay.New(appID, privateKey, false)
)
 
func init() {
    client.LoadAliPayPublicKey("你的支付寶公鑰")
}

// WebPageAlipay 網(wǎng)頁掃碼支付
func WebPageAlipay(c *gin.Context) {
    ......
    var p = alipay.TradePagePay{}
    p.ReturnURL = "http://127.0.0.1:8080/return" //訂單付款后跳轉的網(wǎng)址頁面
    p.Subject = fmt.Sprintf("訂單號：%s", orderSn) //付款標題
    p.OutTradeNo = orderSn                     //商家訂單號
    p.TotalAmount = price                      //價格
    p.ProductCode = "FAST_INSTANT_TRADE_PAY"
    
    var url, err = client.TradePagePay(p)
    if err != nil {
        fmt.Println(err)
    }
 
    var payURL = url.String() //掃碼支付的網(wǎng)頁鏈接，返回前端后打開
}

// AliPayNotify 接受通知接口
func AliPayNotify(c *gin.Context) {
    //獲取url并轉成*URL
    x, _ := url.Parse(c.Request.URL.String())
    //驗證是否成功支付
    ok, err := client.VerifySign(x.Query())
}