微信JSAPI 公众号支付 H5支付以及APP支付 WEBAPI接口开发测试

统一下单入口 调用该方法入口：

public void WxPayAPI()
    {   //string PayPrice ="99.9";
        ////订单号
        //string Payorder =GenerateOutTradeNo();

        //支付金额
        string PayPrice = Request.GetString("payprice").ToString("filtersql");
        //支付单号
        string Payorder = Request.GetString("payorder").ToString("filtersql");
        //公众号jsapi支付 H5支付传参数
        string Openid =Request.GetString("openid").ToString("filtersql");
        string data = "";
      try
        {

            WechatPayHelper wxpay = new WechatPayHelper();
            int total_fee = (Convert.ToInt32(decimal.Parse(PayPrice) * 100)); ;
            ////////////////////////////////////////////////////////////////////////////////////////////
            //发起统一下单请求APP支付
           // string return_response = wxpay.GetUnifiedOrderResult(Payorder, total_fee, "财政专费");
            ////////////////////////////////////////////////////////////////////////////////////////////
            //发起统一下单请求JASPI H5支付  传递参数 订单号  金额   body说明   公众号ID
            string return_response = wxpay.GetUnifiedOrderResultJSAPI(Payorder, total_fee, "财政专费", "rsR8y885552oooo8DH0");
           
            //写日志
            Utils.WriteLog("统一下单：" + return_response, "微信下单日志");
            //读取返回xml文件信息
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(return_response);//读取xml字符串
            XmlElement root = doc.DocumentElement;
            //转化类
            WeUnifiedorder weun = GetExmlMsg(root);

            if (null!=weun)
            {
                if (weun.return_code.Trim().ToLower() == "fail")
                {
                    //签名失败 接口问题
                   Utils.WriteLogFile("[WechatPay]签名失败：", "异常日志");
                    ReturnData(API.ReturnStatus.失败, "SYSTEMERROR", "系统超时", "");
                }
              else if (weun.result_code.Trim().ToLower() == "fail")
                    {
                        string error = ErrorCode(weun.err_code);
                       Utils.WriteLog("[WechatPay]" + weun.err_code + "：" + error + "", "异常日志");
                        ReturnData(API.ReturnStatus.失败, weun.err_code, error, "");
                    }
                    else
                    {
                        //统一下单接口返回正常的prepay_id，再按签名规范重新生成签名后，将数据传输给APP或者公众号客户端。
                       //参与签名的字段名为appId，partnerId，prepayId，nonceStr，timeStamp，package。
                       //注意：package的值格式为Sign=WXPay
                        string noncestr = WechatPayHelper.StrRodamNo(16);
                        string timestamp = Common.TimeSpanValue.getTimestamp();
                        //把请求参数打包成数组
                        Dictionary<string, string> sParaTempToken = new Dictionary<string, string>();
                        sParaTempToken.Add("appid", weun.appid);
                        sParaTempToken.Add("partnerid", weun.mch_id);
                        sParaTempToken.Add("noncestr", noncestr);
                        sParaTempToken.Add("prepayid", weun.prepay_id);
                        sParaTempToken.Add("package", "Sign=WXPay");
                        sParaTempToken.Add("timestamp", timestamp);
                        //请求参数体
                        string strRequestData = "";
                        //加密
                        string strSign = wxpay.MakeSignData(sParaTempToken, ref strRequestData);

                        data = "{"appid":"" + weun.appid + "","partnerid":"" + weun.mch_id + "","noncestr":"" + noncestr + "","sign":"" + strSign + "","Package":"Sign=WXPay","prepayid":"" + weun.prepay_id + "","timestamp":"" + timestamp + ""}";

                        ReturnData(API.ReturnStatus.成功, "success", "下单支付成功", data);
                    }
                }
           
            else
            {
                ReturnData(API.ReturnStatus.失败, "error", "下单支付失败", "");
            }


        }
        catch (System.Threading.ThreadAbortException) { }
        catch (Exception e)
        {
            Utils.WriteLog("统一下单：" + e.Message, "异常日志");
            ReturnData(API.ReturnStatus.失败, "error", "下单支付失败", data);
        }

    }

    /// <summary>
    /// 统一下单返回类
    /// </summary>
    /// <param name="root"></param>
    /// <returns></returns>
    public WeUnifiedorder GetExmlMsg(XmlElement root)
    {
        WeUnifiedorder xmlMsg = new WeUnifiedorder()
        {
            return_code = root.SelectSingleNode("return_code").InnerText
        };
        //返回状态码为SUCCESS
        if (xmlMsg.return_code.Trim().ToLower() == "fail")
        {
            xmlMsg.return_msg = root.SelectSingleNode("return_msg").InnerText;
        }
        else
        {
            xmlMsg.appid = root.SelectSingleNode("appid").InnerText;
            xmlMsg.mch_id = root.SelectSingleNode("mch_id").InnerText;
            
            xmlMsg.nonce_str = root.SelectSingleNode("nonce_str").InnerText;
            xmlMsg.sign = root.SelectSingleNode("sign").InnerText;
            xmlMsg.result_code = root.SelectSingleNode("result_code").InnerText;
            //业务结果
            if (xmlMsg.result_code.Trim().ToLower() == "fail")
            {
                xmlMsg.err_code = root.SelectSingleNode("err_code").InnerText;
                xmlMsg.err_code_des = root.SelectSingleNode("err_code_des").InnerText;
            }
            else
            {
                xmlMsg.trade_type = root.SelectSingleNode("trade_type").InnerText;
                xmlMsg.prepay_id = root.SelectSingleNode("prepay_id").InnerText;
            }
        }
        return xmlMsg;
    }

    /// <summary>
    /// 统一下单返回错误码
    /// </summary>
    /// <param name="code"></param>
    /// <returns></returns>
    public string ErrorCode(string code)
    {
        string message = "错误信息：";

        switch (code)
        {
            case "NOAUTH":
                message += "商户未开通此接口权限";
                break;
            case "NOTENOUGH":
                message += "用户帐号余额不足";
                break;
            case "ORDERPAID":
                message += "商户订单已支付";
                break;
            case "ORDERCLOSED":
                message += "当前订单已关闭，无法支付";
                break;
            case "SYSTEMERROR":
                message += "系统超时";
                break;
            case "APPID_NOT_EXIST":
                message += "请检查APPID是否正确";
                break;
            case "MCHID_NOT_EXIST":
                message += "请检查MCHID是否正确";
                break;
            case "APPID_MCHID_NOT_MATCH":
                message += "appid和mch_id不匹配";
                break;
            case "LACK_PARAMS":
                message += "缺少必要的请求参数";
                break;
            case "OUT_TRADE_NO_USED":
                message += "商户订单号重复";
                break;
            case "SIGNERROR":
                message += "签名错误";
                break;
            case "XML_FORMAT_ERROR":
                message += "XML格式错误";
                break;
            case "REQUIRE_POST_METHOD":
                message += "未使用post传递参数 ";
                break;
            case "POST_DATA_EMPTY":
                message += "post数据不能为空";
                break;
            case "NOT_UTF8":
                message += "编码格式错误";
                break;
        }
        return message;
    }

 WechatPayHelper 代码：

public class WechatPayHelper
{
    private string RequestUrl = "";//接口调用地址
    //交易安全检验码，由数字和字母组成的32位字符串
    private string key = "";
    private string appid = "";//应用ID
    private string mch_id = "";//商户号
    private string nonce_str = "";//随机字符串
    private string sign = "";//签名
     private string spbill_create_ip = "";//终端IP
    private string notify_url = "";//通知地址
    private string trade_type = "";//交易类型
    private string pay_url = "";
    //字符编码格式 目前支持 utf-8
    private string input_charset = "utf-8";
    //签名方式RSA MD5
    private string sign_type = "MD5";
    public WechatPayHelper()
    {
        HttpContext Context = System.Web.HttpContext.Current;
        DataTable dt = null;
        //////////////////////////////////////////////////////
        //APP支付配置   读取配置文件XML
        /////////////////////////////////////////////////////
        // string strXML = "Wechat_Pay_APP.xml";
        /////////////////////////////////////////////////
        //jsapi h5支付配置  读取配置XML文件
       
          string strXML = "Wechat_Pay_JSAPI.xml";
              object objValue =GetCache(strXML);
        if (objValue == null)
        {
            dt = GetConfigXml("//Config//PayConfig/" + strXML);
            SetCache(strXML, dt);
        }
        else
        {
            dt = (DataTable)objValue;
        }
        if (dt != null)
        {
            appid = dt.Rows[0]["appid"].ToString();
            mch_id = dt.Rows[0]["mch_id"].ToString();
            notify_url = dt.Rows[0]["notify_url"].ToString();
            pay_url = dt.Rows[0]["pay_url"].ToString();
            spbill_create_ip = GetUserIp();
            nonce_str=StrRodamNo(16);
            trade_type = dt.Rows[0]["trade_type"].ToString();
            key = dt.Rows[0]["key"].ToString();
        }
    }

    /// <summary>
    /// 调用统一下单，获得下单结果 APP
    /// </summary>
    /// <param name="out_trade_no"></param>
    /// <param name="total_fee"></param>
    /// <param name="body"></param>
    /// <returns></returns>
    public string GetUnifiedOrderResult(string out_trade_no, int total_fee, string body)
    {
        //请求业务参数详细
        StringBuilder sb = new StringBuilder();
        sb.AppendFormat("<xml><appid>{0}</appid><mch_id>{1}</mch_id> <body>{2}</body><nonce_str>{3}</nonce_str>", appid, mch_id, body, nonce_str);
        sb.AppendFormat("<out_trade_no>{0}</out_trade_no><total_fee>{1}</total_fee> <spbill_create_ip>{2}</spbill_create_ip><trade_type>{3}</trade_type>", out_trade_no, total_fee.ToString(), spbill_create_ip, trade_type);
        sb.AppendFormat("<notify_url>{0}</notify_url>", notify_url);
        //把请求参数打包成数组
        Dictionary<string, string> softdic = new Dictionary<string, string>();
        softdic.Add("appid", appid);
        softdic.Add("mch_id", mch_id);
        softdic.Add("nonce_str", nonce_str);
        softdic.Add("body", body);
        softdic.Add("out_trade_no", out_trade_no);
        softdic.Add("total_fee", total_fee.ToString());
        softdic.Add("spbill_create_ip", spbill_create_ip);
        softdic.Add("trade_type", trade_type);
        softdic.Add("notify_url", notify_url);

        //请求参数体
        string strRequest = "";

        //加密签名
        string strSign = MakeSignData(softdic, ref strRequest);

        strRequest += "&sign=" + strSign;

        //打包xml
        sb.AppendFormat("<sign>{0}</sign></xml>", strSign);

        //发送请求
        string strResponse = RequestWechatpay(sb.ToString());


        //URLDECODE返回的信息
        Encoding code = Encoding.GetEncoding(input_charset);
        strResponse = HttpUtility.UrlDecode(strResponse, code);

        return strResponse;
    }

    /// <summary>
    /// 调用统一下单，获得下单结果 JSAPI
    /// </summary>
    /// <param name="out_trade_no"></param>
    /// <param name="total_fee"></param>
    /// <param name="body"></param>
    /// <returns></returns>
    public string GetUnifiedOrderResultJSAPI(string out_trade_no, int total_fee, string body, string openid)
    {
        //请求业务参数详细
        StringBuilder sb = new StringBuilder();
        sb.AppendFormat("<xml><appid>{0}</appid><mch_id>{1}</mch_id> <body>{2}</body><nonce_str>{3}</nonce_str>", appid, mch_id, body, nonce_str);
        sb.AppendFormat("<out_trade_no>{0}</out_trade_no><total_fee>{1}</total_fee> <spbill_create_ip>{2}</spbill_create_ip><trade_type>{3}</trade_type>", out_trade_no, total_fee.ToString(), spbill_create_ip, trade_type);
        sb.AppendFormat("<notify_url>{0}</notify_url>", notify_url);
        sb.AppendFormat("<openid>{0}</openid>", openid);

        //把请求参数打包成数组
        Dictionary<string, string> softdic = new Dictionary<string, string>();
        softdic.Add("appid", appid);
        softdic.Add("mch_id", mch_id);
        softdic.Add("nonce_str", nonce_str);
        softdic.Add("body", body);
        softdic.Add("out_trade_no", out_trade_no);
        softdic.Add("total_fee", total_fee.ToString());
        softdic.Add("spbill_create_ip", spbill_create_ip);
        softdic.Add("trade_type", trade_type);
        softdic.Add("notify_url", notify_url);
        softdic.Add("openid", openid);

        //请求参数体
        string strRequest = "";

        //加密签名
        string strSign = MakeSignData(softdic, ref strRequest);

        strRequest += "&sign=" + strSign;

        //打包xml
        sb.AppendFormat("<sign>{0}</sign></xml>", strSign);

        //发送请求
        string strResponse = RequestWechatpay(sb.ToString());


        //URLDECODE返回的信息
        Encoding code = Encoding.GetEncoding(input_charset);
        strResponse = HttpUtility.UrlDecode(strResponse, code);

        return strResponse;
    }

     /// <summary>
  /// 设置当前应用程序指定CacheKey的Cache值
  /// </summary>
  /// <param name="CacheKey"></param>
  /// <param name="objObject"></param>
  public static void SetCache(string CacheKey, object objObject)
  {
   System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            if (objObject!=null)
                objCache.Insert(CacheKey, objObject, null, DateTime.UtcNow.AddDays(7), TimeSpan.Zero);
  }
 /// <summary>
  /// 获取当前应用程序指定CacheKey的Cache值
  /// </summary>
  /// <param name="CacheKey"></param>
  /// <returns></returns>
  public static object GetCache(string CacheKey)
  {
   System.Web.Caching.Cache objCache = HttpRuntime.Cache;
   return objCache[CacheKey];
  }
    /// <summary>
    /// 签名原始串
    /// </summary>
    /// <param name="dicParm">所有非空参数</param>
    /// <param name="strQueryString">请求串</param>
    /// <returns>签名串</returns>
    public string MakeSignData(Dictionary<string, string> dicParm, ref string strQueryString)
    {   //先排序
        Dictionary<string, string> dicSort = dicParm.OrderBy(o => o.Key).ToDictionary(o => o.Key, p => p.Value);
        StringBuilder sb = new StringBuilder();
        //再转换成URL字符串
        foreach (KeyValuePair<string, string> kvParm in dicSort)
        {
            if (null != kvParm.Value && "".CompareTo(kvParm.Value) != 0
                    && "sign".CompareTo(kvParm.Key) != 0 && "key".CompareTo(kvParm.Key) != 0 && "sign_type".CompareTo(kvParm.Key) != 0)
            {
                if (sb.Length > 0)
                {
                    sb.Append("&");
                    strQueryString += "&";
                }
                sb.Append(kvParm.Key + "=" + HttpUtility.UrlDecode(kvParm.Value));
                strQueryString += kvParm.Key + "=" + HttpUtility.UrlEncode(kvParm.Value);
            }
        }
        //再和key拼装成字符串
        sb.Append("&key=" + key);
        //再进行MD5加密转成大写
        return MD5Create(sb.ToString(), input_charset).ToUpper();

        }

    public static string MD5Create(string str, string charset)
    {
        string retStr;
        MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();

        //创建md5对象
        byte[] inputBye;
        byte[] outputBye;

        //使用GB2312编码方式把字符串转化为字节数组．
        try
        {
            inputBye = Encoding.GetEncoding(charset).GetBytes(str);
        }
        catch (Exception ex)
        {
            inputBye = Encoding.GetEncoding("GB2312").GetBytes(str);
        }
        outputBye = m5.ComputeHash(inputBye);

        retStr = System.BitConverter.ToString(outputBye);
        retStr = retStr.Replace("-", "");
        return retStr;
    }

    /// <summary>
    ///把请求参数信息打包发送请求微信支付地址
    /// </summary>
    /// <param name="strRequestData">请求参数字符串（QueryString）</param>
    /// <returns></returns>
    private string RequestWechatpay(string strRequestData)
    {
        Encoding code = Encoding.GetEncoding(input_charset);

        //把数组转换成流中所需字节数组类型
        byte[] bytesRequestData = code.GetBytes(strRequestData);

        //请求远程HTTP
        string strResult = "";
        try
        {
            //设置HttpWebRequest基本信息
            HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(pay_url);
            myReq.Method = "post";
            myReq.ContentType = "text/xml";

            //填充POST数据
            myReq.ContentLength = bytesRequestData.Length;
            Stream requestStream = myReq.GetRequestStream();
            requestStream.Write(bytesRequestData, 0, bytesRequestData.Length);
            requestStream.Close();

            //发送POST数据请求服务器
            HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
            Stream myStream = HttpWResp.GetResponseStream();

            //获取服务器返回信息
            StreamReader reader = new StreamReader(myStream, code);
            StringBuilder responseData = new StringBuilder();
            String line;
            while ((line = reader.ReadLine()) != null)
            {
                responseData.Append(line);
            }

            //释放
            myStream.Close();

            strResult = responseData.ToString();
        }
        catch (Exception exp)
        {
            strResult = "报错：" + exp.Message;
        }

        return strResult;
    }


    /// <summary>
    /// 获得客户端的IP
    /// </summary>
    /// <returns>当前页面客户端的IP</returns>
    public static string GetUserIp()
    {

        string userHostAddress = HttpContext.Current.Request.UserHostAddress;

        if (string.IsNullOrEmpty(userHostAddress))
        {
            userHostAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
        }

        //最后判断获取是否成功，并检查IP地址的格式（检查其格式非常重要）
        if (!string.IsNullOrEmpty(userHostAddress) && IsIP(userHostAddress))
        {
            return userHostAddress;
        }
        return "127.0.0.1";


    }

    /// <summary>
    /// 检查IP地址格式
    /// </summary>
    /// <param name="ip"></param>
    /// <returns></returns>
    public static bool IsIP(string ip)
    {
        return System.Text.RegularExpressions.Regex.IsMatch(ip, @"^((2[0-4]d|25[0-5]|[01]?dd?).){3}(2[0-4]d|25[0-5]|[01]?dd?)$");
    }


    /// <summary>
    /// 生成随机字母与数字
    /// </summary>
    /// <param name="IntStr">生成长度</param>
    /// <returns></returns>
    public static string StrRodamNo(int Length)
    {
        return StrRodam(Length, false);
    }

    /// <summary>
    /// 生成随机字母与数字
    /// </summary>
    /// <param name="Length">生成长度</param>
    /// <param name="Sleep">是否要在生成前将当前线程阻止以避免重复</param>
    /// <returns></returns>
    public static string StrRodam(int Length, bool Sleep)
    {
        if (Sleep)
            System.Threading.Thread.Sleep(3);
        char[] Pattern = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
        string result = "";
        int n = Pattern.Length;
        System.Random random = new Random(~unchecked((int)DateTime.Now.Ticks));
        for (int i = 0; i < Length; i++)
        {
            int rnd = random.Next(0, n);
            result += Pattern[rnd];
        }
        return result;
    }

    #region 读取xml中的指定节点的值
    /// <summary>  
    /// 读取xml中的指定节点的值
    /// </summary>  
    private string ReadXmlNode(string filename)
    {
        string result = "调用微信服务异常";
        XmlDocument xmlDoc = new XmlDocument();
        try
        {
            xmlDoc.LoadXml(filename);
            
            XmlNode root = xmlDoc.SelectSingleNode("xml");       
            if (root != null)
                result = (root.SelectSingleNode("code_url")).InnerText;

        }
        catch (Exception e)
        {
            SZRPP.Common.Utils.WriteLogFile("ReadXmlNode：" + e.Message,"");
        }
        return result;
    }

    #endregion
}

 微信返回结果异步通知地址

wechatpay_notify.aspx

 protected void Page_Load(object sender, EventArgs e)
    {
        
      
        StreamReader reader = new StreamReader(Request.InputStream);
        String xmlData = reader.ReadToEnd();
        Utils.WriteLog("微信异步回调：" + xmlData, "微信异步回调");
        //序列化xml
        Dictionary<string, string> dicParam = GetInfoFromXml(xmlData);
        string data = "";

        try
        {
            //当收到通知进行处理时，首先检查对应业务数据的状态，判断该通知是否已经处理过，如果没有处理过再进行处理，如果处理过直接返回结果成功。在对业务数据进行状态检查和处理之前，要采用数据锁进行并发控制，以避免函数重入造成的数据混乱。
            
            if (dicParam.ContainsKey("return_code") && dicParam["return_code"] == "SUCCESS")
            {
                //通讯成功
                WechatPayHelper wcHelper = new WechatPayHelper();
                string strRequestData = "";
                //计算加密
                string strSign = wcHelper.MakeSignData(dicParam, ref strRequestData);
                //判断签名
                if (strSign == dicParam["sign"])
                {
                    //判断业务结果
                    if ("SUCCESS" == dicParam["result_code"])
                    {
                        //判断业务是否处理过  
                        string out_trade_no = dicParam["out_trade_no"];//订单编号
                        
                        if (out_trade_no != null)
                        {
                                 OrderPayment payment = payBll.Query(out_trade_no,"");

                            if (payment != null)
                            {//商户系统对于支付结果通知的内容一定要做签名验证,并校验返回的订单金额是否与商户侧的订单金额一致，防止数据泄漏导致出现“假通知”，造成资金损失。
                                if (payment.PayPrice.Equals(decimal.Parse(dicParam["total_fee"])/100))
                                {
                           data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[金额不一致]]></return_msg></xml>";
                                    Response.Write(data);
                                }
                                if (payment.PayStatus == 1)
                                {
                                    //已经支付 视为处理过 直接返回
                                    data = "<xml><return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg></xml>";
                                    Response.Write(data);
                                }
                                else
                                {
                                    //修改支付状态
                                    if (payBll.UpdatePayStatus(out_trade_no, "1",1) > 0)
                                    {
                                        
                                        data = "<xml><return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg></xml>";
                                        Response.Write(data);
                                    }
                                }
                            }

                            else
                            {
                                data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
                                Response.Write(data);
                            }
                        }
                    }
                    else
                    {
                        //错误信息
                        string error = dicParam["err_code"] + ":" + dicParam["err_code_des"];
                        data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
                        Response.Write(data);
                    }
                }
                else
                {
                    data="<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
                    Response.Write(data);
                }
            }

        }
        catch (Exception ex)
        {
            Utils.WriteLog("微信异步回调异常：" + ex.Message, "异常日志");
            data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
            Response.Write(data);
        }

    }

    /// <summary>
    /// 把XML数据转换为Sorted<string, string>集合
    /// </summary>
    /// <param name="strxml"></param>
    /// <returns></returns>
    public Dictionary<string, string> GetInfoFromXml(string xmlstring)
    {
        Dictionary<string, string> sParams = new Dictionary<string, string>();
        try
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(xmlstring);
            XmlElement root = doc.DocumentElement;
            int len = root.ChildNodes.Count;
            for (int i = 0; i < len; i++)
            {
                string name = root.ChildNodes[i].Name;
                if (!sParams.ContainsKey(name))
                {
                    sParams.Add(name.Trim(), root.ChildNodes[i].InnerText.Trim());
                }
            }
        }
        catch (Exception ex)
        {
            
        }
        return sParams;
    }

 xml配置文件: Wechat_Pay_JSAPI.xml  

<?xml version="1.0" encoding="utf-8" ?>
<data>
  <!--接收微信支付异步通知回调地址，通知url必须为直接可访问的url，不能携带参数-->
  <notify_url>http://8.20.7.8:300/PayNotifyPage/PayNotify/wechatpay_notify.aspx</notify_url>
  <pay_url>https://api.mch.weixin.qq.com/pay/unifiedorder</pay_url>
  <!--微信开放平台审核通过的应用APPID-->
  <appid>wxf99999999999</appid>
  <!--微信支付分配的商户号-->
  <mch_id>148888888882</mch_id>
  <key>16ce9ghjjjjjj5555552ee19d</key>
  <subject>财政专费</subject>
  <trade_type>JSAPI</trade_type>
</data>

Wechat_Pay_APP.xml

<?xml version="1.0" encoding="utf-8" ?>
<data>
  <!--接收微信支付异步通知回调地址，通知url必须为直接可访问的url，不能携带参数-->
  <notify_url>http://8.20.7.8:300/PayNotifyPage/PayNotify/wechatpay_notify.aspx</notify_url>
  <pay_url>https://api.mch.weixin.qq.com/pay/unifiedorder</pay_url>
  <!--微信开放平台审核通过的应用APPID-->
  <appid>wxf99999999999</appid>
  <!--微信支付分配的商户号-->
  <mch_id>148888888882</mch_id>
  <key>16ce9ghjjjjjj5555552ee19d</key>
  <subject>财政专费</subject>
  <trade_type>APP</trade_type>
</data>

</data>

稍加对接口的调整 加一个参数类型 直接使用一个接口即可完成对APP 公众号 jsapi H5 的统一调用即可   当哪一个渠道发起支付请求就唤起哪一个渠道的支付
至此进行传递参数进行发起下单既可完成整个支付请求了。在这里分开写 主要起到一个牵针引线的作用