C#微信支付統一下單 APP支付介面
阿新 • • 發佈：2019-01-07
public class pay
{
private string WeiXinPayUrl = ""; 支付完成通知地址
private string packageStr = "Sign=WXPay";
/// <summary>
/// 微信支付商戶號（從微信發給你的郵件中獲得的）
/// </summary>
public string MchId
{
get;
internal set;
}
/// <summary>
/// 應用的APPID（微信發給你的郵件中也有這項內容，一般以wx開頭，微信開放平臺-管理中心-應用詳情也可以看到這項內容）
/// </summary>
public string AppId
{
get;
internal set;
}
/// <summary>
/// 這裡是API金鑰，不是Appsecret，這裡最容易出錯了！請務必注意！
/// 設定方法：微信商戶平臺(pay.weixin.qq.com)-->賬戶設定-->API安全-->金鑰設定
/// </summary>
public string ApiKey
{
get;
internal set;
}
/// <summary>
/// 支付成功後，微信會請求這個路徑，
/// </summary>
public string NotifyUrl
{
get;
internal set;
}
/// <summary>
/// 支付類建構函式，三個關鍵引數缺一不可，均不能為空
/// </summary>
/// <param name="MchId">微信支付商戶號（從微信發給你的郵件中獲得的）</param>
/// <param name="AppId">應用的APPID（微信發給你的郵件中也有這項內容，一般以wx開頭，微信開放平臺-管理中心-應用詳情也可以看到這項內容）</param>
/// <param name="ApiKey">
/// 這裡是API金鑰，不是Appsecret，這裡最容易出錯了！請務必注意！
/// 設定方法：微信商戶平臺(pay.weixin.qq.com)-->賬戶設定-->API安全-->金鑰設定
/// </param>
public pay(string MchId, string AppId, string ApiKey, string NotifyUrl)
{
this.MchId = MchId;
this.AppId = AppId;
this.ApiKey = ApiKey;
this.NotifyUrl = NotifyUrl;
}
/// <summary>
/// 開發發起支付
/// </summary>
/// <param name="TotalFee">總金額，單位：分，不能為空</param>
/// <param name="TradeNo">訂單號，你自己定就好了，不要重複，不能為空</param>
/// <param name="Des">訂單描述，不能為空</param>
/// <param name="ClientIp">客戶端的IP地址，不能為空</param>
/// <param name="FeeType">貨幣型別，預設是CNY，人民幣</param>
/// <returns></returns>
public string Pay(Int64 TotalFee, string TradeNo, string Des, string ClientIp, string FeeType = "CNY")
{
//為傳送請求給微信伺服器準備資料
var nstr = MakeNonceStr();
Hashtable packageParameter = new Hashtable();
packageParameter.Add("appid", this.AppId);
packageParameter.Add("body", Des);
packageParameter.Add("mch_id", this.MchId);
packageParameter.Add("notify_url", this.NotifyUrl);
packageParameter.Add("nonce_str", nstr);
packageParameter.Add("out_trade_no", TradeNo);
packageParameter.Add("total_fee", TotalFee.ToString());
packageParameter.Add("spbill_create_ip", ClientIp);
packageParameter.Add("trade_type", "APP");
packageParameter.Add("fee_type", FeeType);
var sign = CreateMd5Sign(packageParameter);
packageParameter.Add("sign", sign);
var xe = PostDataToWeiXin(packageParameter);
//為響應客戶端的請求準備資料
var timeStamp = GetTimeStamp();
var prepayId = xe.Element("prepay_id").Value;
nstr = xe.Element("nonce_str").Value;
Hashtable paySignReqHandler = new Hashtable();
paySignReqHandler.Add("appid", this.AppId);
paySignReqHandler.Add("partnerid", this.MchId);
paySignReqHandler.Add("prepayid", prepayId);
paySignReqHandler.Add("noncestr", nstr);
paySignReqHandler.Add("package", packageStr);
paySignReqHandler.Add("timestamp", timeStamp.ToString());
var paySign = CreateMd5Sign(paySignReqHandler);
var obj = new
{
appid = this.AppId,
partnerid = this.MchId,
prepayid = prepayId,
package = packageStr,
noncestr = nstr,
timestamp = timeStamp,
sign = paySign
};
var serializer = new JavaScriptSerializer();
var result = serializer.Serialize(obj);
return result;
}
public static string GetTimeStamp()
{
TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
return Convert.ToInt64(ts.TotalSeconds).ToString();
}
private XElement PostDataToWeiXin(Hashtable parameters)
{
var xmlStr = getXmlStr(parameters);
var data = Encoding.UTF8.GetBytes(xmlStr);
Stream responseStream;
HttpWebRequest request = WebRequest.Create(WeiXinPayUrl) as HttpWebRequest;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.ContentLength = data.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(data, 0, data.Length);
requestStream.Close();
try
{
responseStream = request.GetResponse().GetResponseStream();
}
catch (Exception exception)
{
throw exception;
}
string str = string.Empty;
using (StreamReader reader = new StreamReader(responseStream, Encoding.UTF8))
{
str = reader.ReadToEnd();
}
responseStream.Close();
var xe = XElement.Parse(str);
return xe;
}
private string getXmlStr(Hashtable parameters)
{
var sb = new StringBuilder();
sb.Append("<xml>");
foreach (string k in parameters.Keys)
{
var v = (string)parameters[k];
if (Regex.IsMatch(v, @"^[0-9.]$"))
{
sb.Append("<" + k + ">" + v + "</" + k + ">");
}
else
{
sb.Append("<" + k + "><![CDATA[" + v + "]]></" + k + ">");
}
}
sb.Append("</xml>");
return sb.ToString();
}
private string CreateMd5Sign(Hashtable parameters)
{
var sb = new StringBuilder();
var akeys = new ArrayList(parameters.Keys);
akeys.Sort();//排序，這是微信要求的
foreach (string k in akeys)
{
var v = (string)parameters[k];
sb.Append(k + "=" + v + "&");
}
sb.Append("key=" + ApiKey);
string sign = GetMD5(sb.ToString());
return sign;
}
private string MakeNonceStr()
{
var timestap = DateTime.Now.ToString("yyyyMMddhhmmssffff");
return GetMD5(timestap);
}
private string GetMD5(string src)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] data = Encoding.UTF8.GetBytes(src);
byte[] md5data = md5.ComputeHash(data);
md5.Clear();
var retStr = BitConverter.ToString(md5data);
retStr = retStr.Replace("-", "").ToUpper();
return retStr;
}
}
{
private string WeiXinPayUrl = ""; 支付完成通知地址
private string packageStr = "Sign=WXPay";
/// <summary>
/// 微信支付商戶號（從微信發給你的郵件中獲得的）
/// </summary>
public string MchId
{
get;
internal set;
}
/// <summary>
/// 應用的APPID（微信發給你的郵件中也有這項內容，一般以wx開頭，微信開放平臺-管理中心-應用詳情也可以看到這項內容）
/// </summary>
public string AppId
{
get;
internal set;
}
/// <summary>
/// 這裡是API金鑰，不是Appsecret，這裡最容易出錯了！請務必注意！
/// 設定方法：微信商戶平臺(pay.weixin.qq.com)-->賬戶設定-->API安全-->金鑰設定
/// </summary>
public string ApiKey
{
get;
internal set;
}
/// <summary>
/// 支付成功後，微信會請求這個路徑，
/// </summary>
public string NotifyUrl
{
get;
internal set;
}
/// <summary>
/// 支付類建構函式，三個關鍵引數缺一不可，均不能為空
/// </summary>
/// <param name="MchId">微信支付商戶號（從微信發給你的郵件中獲得的）</param>
/// <param name="AppId">應用的APPID（微信發給你的郵件中也有這項內容，一般以wx開頭，微信開放平臺-管理中心-應用詳情也可以看到這項內容）</param>
/// <param name="ApiKey">
/// 這裡是API金鑰，不是Appsecret，這裡最容易出錯了！請務必注意！
/// 設定方法：微信商戶平臺(pay.weixin.qq.com)-->賬戶設定-->API安全-->金鑰設定
/// </param>
public pay(string MchId, string AppId, string ApiKey, string NotifyUrl)
{
this.MchId = MchId;
this.AppId = AppId;
this.ApiKey = ApiKey;
this.NotifyUrl = NotifyUrl;
}
/// <summary>
/// 開發發起支付
/// </summary>
/// <param name="TotalFee">總金額，單位：分，不能為空</param>
/// <param name="TradeNo">訂單號，你自己定就好了，不要重複，不能為空</param>
/// <param name="Des">訂單描述，不能為空</param>
/// <param name="ClientIp">客戶端的IP地址，不能為空</param>
/// <param name="FeeType">貨幣型別，預設是CNY，人民幣</param>
/// <returns></returns>
public string Pay(Int64 TotalFee, string TradeNo, string Des, string ClientIp, string FeeType = "CNY")
{
//為傳送請求給微信伺服器準備資料
var nstr = MakeNonceStr();
Hashtable packageParameter = new Hashtable();
packageParameter.Add("appid", this.AppId);
packageParameter.Add("body", Des);
packageParameter.Add("mch_id", this.MchId);
packageParameter.Add("notify_url", this.NotifyUrl);
packageParameter.Add("nonce_str", nstr);
packageParameter.Add("out_trade_no", TradeNo);
packageParameter.Add("total_fee", TotalFee.ToString());
packageParameter.Add("spbill_create_ip", ClientIp);
packageParameter.Add("trade_type", "APP");
packageParameter.Add("fee_type", FeeType);
var sign = CreateMd5Sign(packageParameter);
packageParameter.Add("sign", sign);
var xe = PostDataToWeiXin(packageParameter);
//為響應客戶端的請求準備資料
var timeStamp = GetTimeStamp();
var prepayId = xe.Element("prepay_id").Value;
nstr = xe.Element("nonce_str").Value;
Hashtable paySignReqHandler = new Hashtable();
paySignReqHandler.Add("appid", this.AppId);
paySignReqHandler.Add("partnerid", this.MchId);
paySignReqHandler.Add("prepayid", prepayId);
paySignReqHandler.Add("noncestr", nstr);
paySignReqHandler.Add("package", packageStr);
paySignReqHandler.Add("timestamp", timeStamp.ToString());
var paySign = CreateMd5Sign(paySignReqHandler);
var obj = new
{
appid = this.AppId,
partnerid = this.MchId,
prepayid = prepayId,
package = packageStr,
noncestr = nstr,
timestamp = timeStamp,
sign = paySign
};
var serializer = new JavaScriptSerializer();
var result = serializer.Serialize(obj);
return result;
}
public static string GetTimeStamp()
{
TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
return Convert.ToInt64(ts.TotalSeconds).ToString();
}
private XElement PostDataToWeiXin(Hashtable parameters)
{
var xmlStr = getXmlStr(parameters);
var data = Encoding.UTF8.GetBytes(xmlStr);
Stream responseStream;
HttpWebRequest request = WebRequest.Create(WeiXinPayUrl) as HttpWebRequest;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.ContentLength = data.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(data, 0, data.Length);
requestStream.Close();
try
{
responseStream = request.GetResponse().GetResponseStream();
}
catch (Exception exception)
{
throw exception;
}
string str = string.Empty;
using (StreamReader reader = new StreamReader(responseStream, Encoding.UTF8))
{
str = reader.ReadToEnd();
}
responseStream.Close();
var xe = XElement.Parse(str);
return xe;
}
private string getXmlStr(Hashtable parameters)
{
var sb = new StringBuilder();
sb.Append("<xml>");
foreach (string k in parameters.Keys)
{
var v = (string)parameters[k];
if (Regex.IsMatch(v, @"^[0-9.]$"))
{
sb.Append("<" + k + ">" + v + "</" + k + ">");
}
else
{
sb.Append("<" + k + "><![CDATA[" + v + "]]></" + k + ">");
}
}
sb.Append("</xml>");
return sb.ToString();
}
private string CreateMd5Sign(Hashtable parameters)
{
var sb = new StringBuilder();
var akeys = new ArrayList(parameters.Keys);
akeys.Sort();//排序，這是微信要求的
foreach (string k in akeys)
{
var v = (string)parameters[k];
sb.Append(k + "=" + v + "&");
}
sb.Append("key=" + ApiKey);
string sign = GetMD5(sb.ToString());
return sign;
}
private string MakeNonceStr()
{
var timestap = DateTime.Now.ToString("yyyyMMddhhmmssffff");
return GetMD5(timestap);
}
private string GetMD5(string src)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] data = Encoding.UTF8.GetBytes(src);
byte[] md5data = md5.ComputeHash(data);
md5.Clear();
var retStr = BitConverter.ToString(md5data);
retStr = retStr.Replace("-", "").ToUpper();
return retStr;
}
}