C#手机充值系统开发（基于聚合数据）

  1    /// <summary>
  2         /// Http (GET/POST)
  3         /// </summary>
  4         /// <param name="url">请求URL</param>
  5         /// <param name="parameters">请求参数</param>
  6         /// <param name="method">请求方法</param>
  7         /// <returns>响应内容</returns>
  8         static string sendPost(string url, IDictionary<string, string> parameters, string method)
  9         {
 10             if (method.ToLower() == "post")
 11             {
 12                 HttpWebRequest req = null;
 13                 HttpWebResponse rsp = null;
 14                 System.IO.Stream reqStream = null;
 15                 try
 16                 {
 17                     req = (HttpWebRequest)WebRequest.Create(url);
 18                     req.Method = method;
 19                     req.KeepAlive = false;
 20                     req.ProtocolVersion = HttpVersion.Version10;
 21                     req.Timeout = 5000;
 22                     req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
 23                     byte[] postData = Encoding.UTF8.GetBytes(BuildQuery(parameters, "utf8"));
 24                     reqStream = req.GetRequestStream();
 25                     reqStream.Write(postData, 0, postData.Length);
 26                     rsp = (HttpWebResponse)req.GetResponse();
 27                     Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
 28                     return GetResponseAsString(rsp, encoding);
 29                 }
 30                 catch (Exception ex)
 31                 {
 32                     return ex.Message;
 33                 }
 34                 finally
 35                 {
 36                     if (reqStream != null) reqStream.Close();
 37                     if (rsp != null) rsp.Close();
 38                 }
 39             }
 40             else
 41             {
 42                 //创建请求
 43                 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url + "?" + BuildQuery(parameters, "utf8"));
 44 
 45                 //GET请求
 46                 request.Method = "GET";
 47                 request.ReadWriteTimeout = 5000;
 48                 request.ContentType = "text/html;charset=UTF-8";
 49                 HttpWebResponse response = (HttpWebResponse)request.GetResponse();
 50                 Stream myResponseStream = response.GetResponseStream();
 51                 StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
 52 
 53                 //返回内容
 54                 string retString = myStreamReader.ReadToEnd();
 55                 return retString;
 56             }
 57         }
 58         /// <summary>
 59         /// 把响应流转换为文本。
 60         /// </summary>
 61         /// <param name="rsp">响应流对象</param>
 62         /// <param name="encoding">编码方式</param>
 63         /// <returns>响应文本</returns>
 64         static string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)
 65         {
 66             System.IO.Stream stream = null;
 67             StreamReader reader = null;
 68             try
 69             {
 70                 // 以字符流的方式读取HTTP响应
 71                 stream = rsp.GetResponseStream();
 72                 reader = new StreamReader(stream, encoding);
 73                 return reader.ReadToEnd();
 74             }
 75             finally
 76             {
 77                 // 释放资源
 78                 if (reader != null) reader.Close();
 79                 if (stream != null) stream.Close();
 80                 if (rsp != null) rsp.Close();
 81             }
 82         }
 83         /// <summary>
 84         /// 组装普通文本请求参数。
 85         /// </summary>
 86         /// <param name="parameters">Key-Value形式请求参数字典</param>
 87         /// <returns>URL编码后的请求数据</returns>
 88         static string BuildQuery(IDictionary<string, string> parameters, string encode)
 89         {
 90             StringBuilder postData = new StringBuilder();
 91             bool hasParam = false;
 92             IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
 93             while (dem.MoveNext())
 94             {
 95                 string name = dem.Current.Key;
 96                 string value = dem.Current.Value;
 97                 // 忽略参数名或参数值为空的参数
 98                 if (!string.IsNullOrEmpty(name))//&& !string.IsNullOrEmpty(value)
 99                 {
100                     if (hasParam)
101                     {
102                         postData.Append("&");
103                     }
104                     postData.Append(name);
105                     postData.Append("=");
106                     if (encode == "gb2312")
107                     {
108                         postData.Append(HttpUtility.UrlEncode(value, Encoding.GetEncoding("gb2312")));
109                     }
110                     else if (encode == "utf8")
111                     {
112                         postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));
113                     }
114                     else
115                     {
116                         postData.Append(value);
117                     }
118                     hasParam = true;
119                 }
120             }
121             return postData.ToString();
122         }
123         /// <summary>  
124         /// 获取时间戳  
125         /// </summary>  
126         /// <returns></returns>  
127         public static string GetTimeStamp()
128         {
129             TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
130             return Convert.ToInt64(ts.TotalSeconds).ToString();
131         }