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微信小程序支付C#后端源码

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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" ;
 
     //模拟wx统一下单 openid(前台获取)
     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);
 
     }
 
    
 
     //微信统一下单获取prepay_id & 再次签名返回数据
     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" ;//微信统一下单请求地址
       string strA = "appid=" + appid + "&attach=" + attach + "&body=" + body + "&mch_id=" + mch_id + "&nonce_str=" + nonce_str + "&notify_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为商户平台设置的密钥key(假)
       string strMD5 = MD5(strk).ToUpper(); //MD5签名
 
       //string strHash=HmacSHA256("sha256",strmd5).ToUpper();  //签名方式只需一种(MD5 或 HmacSHA256   【支付文档需仔细看】)
 
       //签名
       var formData = "<xml>" ;
       formData += "<appid>" + appid + "</appid>" ; //appid
       formData += "<attach>" + attach + "</attach>" ; //附加数据(描述)
       formData += "<body>" + body + "</body>" ; //商品描述
       formData += "<mch_id>" + mch_id + "</mch_id>" ; //商户号
       formData += "<nonce_str>" + nonce_str + "</nonce_str>" ; //随机字符串,不长于32位。
       formData += "<notify_url>" + notify_url + "</notify_url>" ; //通知地址
       formData += "<openid>" + openid + "</openid>" ; //openid
       formData += "<out_trade_no>" + bookingNo + "</out_trade_no>" ; //商户订单号  --待
       formData += "<spbill_create_ip>61.50.221.43</spbill_create_ip>" ; //终端IP --用户ip
       formData += "<total_fee>" + total_fee + "</total_fee>" ; //支付金额单位为(分)
       formData += "<trade_type>JSAPI</trade_type>" ; //交易类型(JSAPI--公众号支付)
       formData += "<sign>" + strMD5 + "</sign>" ; //签名
       formData += "</xml>" ;
 
 
 
       //请求数据
       var getdata = sendPost(url, formData);
 
       //获取xml数据
       XmlDocument doc = new XmlDocument();
       doc.LoadXml(getdata);
       //xml格式转json
       string json = Newtonsoft.Json.JsonConvert.SerializeXmlNode(doc);
 
 
 
       JObject jo = (JObject)JsonConvert.DeserializeObject(json);
       string prepay_id = jo[ "xml" ][ "prepay_id" ][ "#cdata-section" ].ToString();
 
       //时间戳
       string _time = getTime().ToString();
 
       //再次签名返回数据至小程序
       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" ;
 
       //向小程序发送json数据
        return JsonConvert.SerializeObject(w);
     }
 
     /// <summary>
     /// 生成随机串 
     /// </summary>
     /// <param name="length">字符串长度</param>
     /// <returns></returns>
     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();
     }
 
     /// <summary>
     /// 获取时间戳
     /// </summary>
     /// <returns></returns>
     private static long getTime()
     {
       TimeSpan cha = (DateTime.Now - TimeZone.CurrentTimeZone.ToLocalTime( new System.DateTime(1970, 1, 1)));
       long t = ( long )cha.TotalSeconds;
       return t;
     }
 
 
     /// <summary>
     /// MD5签名方法
     /// </summary>
     /// <param name="inputText">加密参数</param>
     /// <returns></returns>
     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;
     }
     /// <summary>
     /// HMAC-SHA256签名方式
     /// </summary>
     /// <param name="message"></param>
     /// <param name="secret"></param>
     /// <returns></returns>
     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);
       }
     }
 
     /// <summary>
     /// wx统一下单请求数据
     /// </summary>
     /// <param name="URL">请求地址</param>
     /// <param name="urlArgs">参数</param>
     /// <returns></returns>
     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); //返回接受的数据
       return returnStr;202     }
 
     /// <summary>
     /// 生成订单号
     /// </summary>
     /// <returns></returns>
     private static string getRandomTime()
     {
       Random rd = new Random(); //用于生成随机数
       string DateStr = DateTime.Now.ToString( "yyyyMMddHHmmssMM" ); //日期
       string str = DateStr + rd.Next(10000).ToString().PadLeft(4, '0' ); //带日期的随机数
       return str;
     }
 
   }
}

使用的是MVC .NET Framework4 。

微信小程序支付前端源码 。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我.

原文链接:https://www.cnblogs.com/oneall/p/9548722.html 。

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