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具體代碼如下
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Web; using System.Web.Mvc; using System.IO; using System.Security.Cryptography; using System.Text; using System.Xml; using Newtonsoft.Json; using Newtonsoft.Json.Linq; namespace Mvc_vue.Controllers { public class wxController : Controller { // // GET: /wx/ public ActionResult Index() { return View(); } //所需值 public static string _appid = "wxd930ea5d5a258f4f"; public static string _mch_id = "10000100"; public static string _key = "192006250b4c09247ec02edce69f6a2d"; //模擬wx統(tǒng)一下單 openid(前臺(tái)獲取) public string getda(string openid) { return Getprepay_id(_appid, "shanghaifendian", "monixiaofei", _mch_id, GetRandomString(30), "http://www.weixin.qq.com/wxpay/pay.php", openid, getRandomTime(), 1); } //微信統(tǒng)一下單獲取prepay_id & 再次簽名返回?cái)?shù)據(jù) private static string Getprepay_id(string appid, string attach, string body, string mch_id, string nonce_str, string notify_url, string openid, string bookingNo, int total_fee) { var url = "https://api.mch.weixin.qq.com/pay/unifiedorder";//微信統(tǒng)一下單請求地址 string strA = "appid=" + appid + "&attach=" + attach + "&body=" + body + "&mch_id=" + mch_id + "&nonce_str=" + nonce_str + "¬ify_url=" + notify_url + "&openid=" + openid + "&out_trade_no=" + bookingNo + "&spbill_create_ip=61.50.221.43&total_fee=" + total_fee + "&trade_type=JSAPI"; string strk = strA + "&key="+_key; //key為商戶平臺(tái)設(shè)置的密鑰key(假) string strMD5 = MD5(strk).ToUpper();//MD5簽名 //string strHash=HmacSHA256("sha256",strmd5).ToUpper(); //簽名方式只需一種(MD5 或 HmacSHA256 【支付文檔需仔細(xì)看】) //簽名 var formData = ""; formData += " "; //請求數(shù)據(jù) var getdata = sendPost(url, formData); //獲取xml數(shù)據(jù) XmlDocument doc = new XmlDocument(); doc.LoadXml(getdata); //xml格式轉(zhuǎn)json string json = Newtonsoft.Json.JsonConvert.SerializeXmlNode(doc); JObject jo = (JObject)JsonConvert.DeserializeObject(json); string prepay_id = jo["xml"]["prepay_id"]["#cdata-section"].ToString(); //時(shí)間戳 string _time = getTime().ToString(); //再次簽名返回?cái)?shù)據(jù)至小程序 string strB = "appId=" + appid + "&nonceStr=" + nonce_str + "&package=prepay_id=" + prepay_id + "&signType=MD5&timeStamp=" + _time + "&key="_key; wx w = new wx(); w.timeStamp = _time; w.nonceStr = nonce_str; w.package = "prepay_id=" + prepay_id; w.paySign = MD5(strB).ToUpper(); ; w.signType = "MD5"; //向小程序發(fā)送json數(shù)據(jù) return JsonConvert.SerializeObject(w); } ///" + appid + " ";//appid formData += "" + attach + " "; //附加數(shù)據(jù)(描述) formData += "" + body + "";//商品描述 formData += "" + mch_id + " ";//商戶號(hào) formData += "" + nonce_str + " ";//隨機(jī)字符串,不長于32位。 formData += "" + notify_url + " ";//通知地址 formData += "" + openid + " ";//openid formData += "" + bookingNo + " ";//商戶訂單號(hào) --待 formData += "61.50.221.43 ";//終端IP --用戶ip formData += "" + total_fee + " ";//支付金額單位為(分) formData += "JSAPI ";//交易類型(JSAPI--公眾號(hào)支付) formData += "" + strMD5 + " "; //簽名 formData += "/// 生成隨機(jī)串 /// /// 字符串長度 ///private static string GetRandomString(int length) { const string key = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789"; if (length < 1) return string.Empty; Random rnd = new Random(); byte[] buffer = new byte[8]; ulong bit = 31; ulong result = 0; int index = 0; StringBuilder sb = new StringBuilder((length / 5 + 1) * 5); while (sb.Length < length) { rnd.NextBytes(buffer); buffer[5] = buffer[6] = buffer[7] = 0x00; result = BitConverter.ToUInt64(buffer, 0); while (result > 0 && sb.Length < length) { index = (int)(bit & result); sb.Append(key[index]); result = result >> 5; } } return sb.ToString(); } /// /// 獲取時(shí)間戳 /// ///private static long getTime() { TimeSpan cha = (DateTime.Now - TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1))); long t = (long)cha.TotalSeconds; return t; } /// /// MD5簽名方法 /// /// 加密參數(shù) ///private static string MD5(string inputText) { MD5 md5 = new MD5CryptoServiceProvider(); byte[] fromData = System.Text.Encoding.UTF8.GetBytes(inputText); byte[] targetData = md5.ComputeHash(fromData); string byte2String = null; for (int i = 0; i < targetData.Length; i++) { byte2String += targetData[i].ToString("x2"); } return byte2String; } /// /// HMAC-SHA256簽名方式 /// /// /// ///private static string HmacSHA256(string message, string secret) { secret = secret ?? ""; var encoding = new System.Text.UTF8Encoding(); byte[] keyByte = encoding.GetBytes(secret); byte[] messageBytes = encoding.GetBytes(message); using (var hmacsha256 = new HMACSHA256(keyByte)) { byte[] hashmessage = hmacsha256.ComputeHash(messageBytes); return Convert.ToBase64String(hashmessage); } } /// /// wx統(tǒng)一下單請求數(shù)據(jù) /// /// 請求地址 /// 參數(shù) ///private static string sendPost(string URL, string urlArgs) { //context.Request["args"] System.Net.WebClient wCient = new System.Net.WebClient(); wCient.Headers.Add("Content-Type", "application/x-www-form-urlencoded"); byte[] postData = System.Text.Encoding.ASCII.GetBytes("body=" + urlArgs); byte[] responseData = wCient.UploadData(URL, "POST", postData); string returnStr = System.Text.Encoding.UTF8.GetString(responseData);//返回接受的數(shù)據(jù) return returnStr;202 } /// /// 生成訂單號(hào) /// ///private static string getRandomTime() { Random rd = new Random();//用于生成隨機(jī)數(shù) string DateStr = DateTime.Now.ToString("yyyyMMddHHmmssMM");//日期 string str = DateStr + rd.Next(10000).ToString().PadLeft(4, '0');//帶日期的隨機(jī)數(shù) return str; } } }
使用的是MVC .NET Framework4
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