.Net C# 小程序卡券demo

/* 准备： 1、公众号绑定小程序号； 2、注册一个开放平台，并将小程序和公众号绑定在同一个开放平台账号下；（文档地址：https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1499332673_Unm7V） 3、官方卡券常见问题文档：https://developers.weixin.qq.com/community/develop/doc/000840ffeb0660526067be8ce5b408?highLine=%25E5%25B0%258F%25E7%25A8%258B%25E5%25BA%258F%25E5%258D%25A1%25E5%2588%25B8%25E7%25AD%25BE%25E5%2590%258D%25E9%2594%2599%25E8%25AF%25AF 4、官方卡券签名生成算法文档（见附录4-卡券扩展字段及签名生成算法）： https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421141115 */ //小程序代码： //index.wxml <button bindtap="getCard">领卡</button> //index.js Page({ data: {}, getCard:function(){ var timestamp = (Date.parse(new Date()) / 1000).toString(); var cardId = "pp42H1eeHts9WQfQcFc6MRd-Srbw";//卡券id，在公众号卡券详情里获得 var nonce_str = Math.floor(Math.random() * 10) + "abc123"; var pushData = { timestamp: timestamp, cardId: cardId, nonce_str: nonce_str}; wx.request({ url: 'http://192.168.1.139:60005/wxMemberCard/CardSign', data: pushData, header: { 'content-type': 'application/json' }, success(res) { var signature = res.data; wx.addCard({ cardList: [ { cardId: cardId, cardExt: '{"nonce_str": "' + nonce_str + '", "timestamp": "' + timestamp + '", "signature":"' + signature + '"}' } ], success: function (res) { console.log(res.cardList) } }) } }) } }) //后端代码： public string CardSign() { var appid = "wx907acf15e7f59a23";//公众号的appid，不是小程序的 var secret = "2a951174350e17711f3c60245f8aa84t";//公众号的secret var url = $"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={appid}&secret={secret}"; var result = new WebUtils().DoGet(url, null); //WebUtils类在附件 var access_token = JObject.Parse(result).GetValue("access_token").ToString(); url = $"https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={access_token}&type=wx_card"; result = new WebUtils().DoGet(url, null); var api_ticket = JObject.Parse(result).GetValue("ticket").ToString(); var cardId = Request.QueryString["cardId"]; var timestamp = Request.QueryString["timestamp"]; var nonce_str = Request.QueryString["nonce_str"];//微信文档说这个非必传，但不传的话会报签名错误 List<string> list = new List<string>() { api_ticket, timestamp, nonce_str, cardId }; list.Sort();//按字典排序，微信的卡券签名校验工具的排序是错的[2019-01-28]。 var signStr = string.Join("", list); var sign = BitConverter.ToString(System.Security.Cryptography.SHA1.Create().ComputeHash(Encoding.UTF8.GetBytes(signStr))).Replace("-", "").ToLower(); return sign; }