C#开发微信门户及应用(32)--微信支付接入和API封装使用

    /// <summary>
    ///微信支付接口/// </summary>
    public interfaceITenPayApi

    {/// <summary>
        ///生成扫描支付模式一URL/// </summary>
        /// <param name="productId">商品ID</param>
        /// <returns></returns>
        string GetPrePayUrl(stringproductId);/// <summary>
        ///生成直接支付url，支付url有效期为2小时,模式二/// </summary>
        /// <param name="info">商品订单数据</param>
        /// <returns></returns>
        stringGetPayUrl(WxPayOrderData info);/// <summary>
        ///统一下单。（不需要证书,默认不需要）///除被扫支付场景以外，商户系统先调用该接口在微信支付服务后台生成预支付交易单，///返回正确的预支付交易回话标识后再按扫码、JSAPI、APP等不同场景生成交易串调起支付。/// </summary>
        /// <param name="info">商品订单数据</param>
WxPayData UnifiedOrder(WxPayOrderData info);



        .............

    /// <summary>
    ///统一下单的商品订单信息/// </summary>
    public classWxPayOrderData

    {/// <summary>
        ///商品ID, trade_type=NATIVE，此参数必传/// </summary>
        public string product_id { get; set; }/// <summary>
        ///商品或支付单简要描述/// </summary>
        public string body { get; set; }/// <summary>
        ///订单总金额，单位为分/// </summary>
        public int total_fee { get; set; }/// <summary>
        ///商品标记，代金券或立减优惠功能的参数，说明详见代金券或立减优惠/// </summary>
        public string goods_tag { get; set; }/// <summary>
        ///交易类型,默认为:NATIVE。///JSAPI--公众号支付、NATIVE--原生扫码支付、APP--app支付/// </summary>
        public string trade_type { get; set; }/// <summary>
        ///商品名称明细列表/// </summary>
        public string detail { get; set; }/// <summary>
        ///附加数据///在查询API和支付通知中原样返回，该字段主要用于商户携带订单的自定义数据/// </summary>
        public string attach { get; set; }/// <summary>
        ///用户标识///trade_type=JSAPI，此参数必传，用户在商户appid下的唯一标识。/// </summary>
        public string openid { get; set; }publicWxPayOrderData()

        {this.trade_type = "NATIVE";

        }

    }

    public classWxPayData

    {//采用排序的Dictionary的好处是方便对数据包进行签名，不用再签名之前再做一次排序
        private SortedDictionary<string, object> m_values = new SortedDictionary<string, object>();/// <summary>
        ///默认构造函数///如果initDefault为true，则自动填入字段（appid,mch_id,time_stamp,nonce_str,out_trade_no,）/// </summary>
        public WxPayData(bool initDefault = false)

        {if(initDefault)

            {

                Init();

            }

        }/// <summary>
        ///对象初始化后，自动填入字段（appid,mch_id,time_stamp,nonce_str,out_trade_no,）/// </summary>
        public voidInit()

        {//初始化几个参数
            this.SetValue("appid", WxPayConfig.APPID);//公众帐号id
            this.SetValue("mch_id", WxPayConfig.MCHID);//商户号
            this.SetValue("nonce_str", GenerateNonceStr());//随机字符串
            this.SetValue("out_trade_no", GenerateOutTradeNo(WxPayConfig.MCHID));//随机字符串
}

        /// <summary>
        ///统一下单。（不需要证书,默认不需要）///除被扫支付场景以外，商户系统先调用该接口在微信支付服务后台生成预支付交易单，///返回正确的预支付交易回话标识后再按扫码、JSAPI、APP等不同场景生成交易串调起支付。/// </summary>
        /// <param name="info">商品订单数据</param>
        publicWxPayData UnifiedOrder(WxPayOrderData info)

        {

            WxPayData data= new WxPayData(true);

            data.SetValue("product_id", info.product_id);//商品ID
            data.SetValue("openid", info.openid);//商品ID//其他信息
            data.SetValue("body", info.body);//商品描述
            data.SetValue("attach", info.attach);//附加数据
            data.SetValue("total_fee", info.total_fee);//总金额
            data.SetValue("goods_tag", info.goods_tag);//商品标记
            data.SetValue("trade_type", info.trade_type);//交易类型//默认构建
            data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));//交易起始时间
            data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));//交易结束时间
..............

            string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";return GetPostResult(data, url);

        /// <summary>
        ///通用的获取结果函数/// </summary>
        private WxPayData GetPostResult(WxPayData data, stringurl)

        {string xml =data.ToXml();string response = helper.GetHtml(url, xml, true);



            WxPayData result= newWxPayData();

            result.FromXml(response);returnresult;

        }

        /// <summary>
        ///生成直接支付url，支付url有效期为2小时,模式二/// </summary>
        /// <param name="info">商品订单数据</param>
        /// <returns></returns>
        public stringGetPayUrl(WxPayOrderData info)

        {

            WxPayData result= UnifiedOrder(info);//调用统一下单接口
            return result.GetString("code_url");//获得统一下单接口返回的二维码链接
        }

        private void btnGetPayUrl_Click(objectsender, EventArgs e)

        {//测试扫码模式二的生成二维码方式
            WxPayOrderData data = newWxPayOrderData()

            {

                product_id= "123456789",

                body= "测试支付-模式二",

                attach= "爱奇迪技术支持",

                detail= "测试扫码支付-模式二",

                total_fee= 1,

                goods_tag= "test1"};var url =api.GetPayUrl(data);var image =api.GenerateQRImage(url);this.imgGetPayUrl.Image =image;this.imgGetPayUrl.SizeMode =PictureBoxSizeMode.StretchImage;

        }

        /// <summary>
        ///生成扫描支付模式一URL/// </summary>
        /// <param name="productId">商品ID</param>
        /// <returns></returns>
        public string GetPrePayUrl(stringproductId)

        {

            WxPayData data= new WxPayData(true);

            data.SetValue("product_id", productId);//商品ID
            data.SetValue("time_stamp", data.GenerateTimeStamp());//随机字符串
            data.SetValue("sign", data.MakeSign());//签名

            string str = data.ToUrlParams();//转换为URL串
            string url = "weixin://wxpay/bizpayurl?" +str;returnurl;

        }

        private void btnGetPrePayUrl_Click(objectsender, EventArgs e)

        {var productId = "12345678";var url =api.GetPrePayUrl(productId);var image =api.GenerateQRImage(url);this.imgGetPrePayUrl.Image =image;this.imgGetPayUrl.SizeMode =PictureBoxSizeMode.StretchImage;

        }

<!DOCTYPE html>
<htmlxmlns="http://www.w3.org/1999/xhtml">
<headrunat="server">
    <metahttp-equiv="content-type"content="text/html;image/gif;charset=utf-8"/>
    <metaname="viewport"content="width=device-width, initial-scale=1" /> 
    <title>微信支付样例-扫码支付</title>
</head>
<body>
    <divstyle="margin-left: 10px;color:#00CD00;font-size:30px;font-weight: bolder;">扫码支付模式一</div><br/>
    <asp:ImageID="Image1"runat="server"style="width:200px;height:200px;"/>
    <br/><br/><br/>
    <divstyle="margin-left: 10px;color:#00CD00;font-size:30px;font-weight: bolder;">扫码支付模式二</div><br/>
    <asp:ImageID="Image2"runat="server"style="width:200px;height:200px;"/>
    
</body>
</html>

        protected void Page_Load(objectsender, EventArgs e)

        {

            TenPayApi api= newTenPayApi();var productId = "123456789";//生成扫码支付模式一url
            string url1 =api.GetPrePayUrl(productId);//生成扫码支付模式二url
            WxPayOrderData info = newWxPayOrderData()

            {

                product_id= "123456789",

                body= "测试支付-模式二",

                attach= "爱奇迪技术支持",

                detail= "测试扫码支付-模式二",

                total_fee= 1,

                goods_tag= "test1"};string url2 =api.GetPayUrl(info);//将url生成二维码图片
            Image1.ImageUrl = "MakeQRCode.aspx?data=" +HttpUtility.UrlEncode(url1);

            Image2.ImageUrl= "MakeQRCode.aspx?data=" +HttpUtility.UrlEncode(url2);

        }