以前用V2，返回错误是401，不知道哪里出了问题 { "mchid": "142888888", "out_trade_no": "142579670220210628092942740", "notify_url": "URL", "amount": { "total": 1, "urrency": "CNY" }, "payer": { "openid": "oYMAs5EuWA4r_MvX0UC2M_ku6YBw" } } public static string Post(string url, JObject dic)     {         HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);         req.Method = "POST";         req.AutomaticDecompression = DecompressionMethods.GZip;         req.ContentType = "application/json";         req.Accept = "application/json";         req.Referer =url;         req.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586";         StringBuilder builder = new StringBuilder();         int i = 0;         if (dic.Count > 0)         {             foreach (var item in dic)             {                 if (i > 0)                     builder.Append("&");                 builder.AppendFormat("{0}={1}", item.Key, item.Value);                 i++;             }         }         byte[] data = Encoding.UTF8.GetBytes(builder.ToString());         req.ContentLength = data.Length;         using (Stream reqStream = req.GetRequestStream())         {             reqStream.Write(data, 0, data.Length);             reqStream.Close();         }         string result = "";         HttpWebResponse resp = (HttpWebResponse)req.GetResponse();         Stream stream = resp.GetResponseStream();         using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))         {             result = reader.ReadToEnd();         }         return result;     }

发起支付拉prepay_id 返回错误，使用是.NET POST {"code":"INVALID_REQUEST","message":"Http头缺少Accept或User-Agent"}

后台变量包含view等标签，如果显示到前台，比如： let a="<view class=\"ok\">文本</view>";