.net core 支付宝，微信支付 一

源码： https://github.com/aspros-luo/Qwerty.Payment/tree/develop

 支付宝支付：参考支付宝sdk及文档，https://docs.open.alipay.com/194

前言：

目前实现支付宝Native支付，手机网站支付，App支付，支付回调，退款申请，退款查询

Native支付及手机支付是由前端加基础数据传入后端，后端加签拼装成html以二维码或form表单呈现

APP支付由后端加签，返回加签结果给app，app直接调用sdk完成支付

1：设置支付需要的config信息，考虑到会有不同appId，所以需要设置appId，私钥和公钥

public static class AliPayConfig
    {
        public static void Init(string appId, string privateKey, string aliPublicKey, string returnUrl, string notifyUrl)
        {
            AppId = appId;
            PrivateKey = privateKey;
            AliPublicKey = aliPublicKey;
            ReturnUrl = string.IsNullOrWhiteSpace(returnUrl) ? notifyUrl : returnUrl;
            NotifyUrl = notifyUrl;
        }

        public static string AppId { get; private set; }
        //public static string Gateway { get; private set; } = "https://openapi.alipay.com/gateway.do";
        internal static string Gateway { get; private set; } = "https://openapi.alipaydev.com/gateway.do";
        public static string PrivateKey { get; private set; }
        public static string AliPublicKey { get; private set; }
        public static string ReturnUrl { get; private set; }
        public static string NotifyUrl { get; private set; }
    }

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