C# 調用API介面處理公用類 內建JSON實體互轉類，

C# 調用API介面處理公用類 內建JSON實體互轉類，

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Net;using System.Net.Security;using System.Security.Cryptography.X509Certificates;using System.Text;using System.Threading.Tasks;using System.Web;namespace AirMedia.Wap.Core{    public static class HttpWebHelper    {        /// <SUMMARY>          /// httpwebrequest類中的一些屬性的集合          /// </SUMMARY>          public class RequestParam        {            /// <SUMMARY>              /// 擷取或設定request類中的Accept屬性              /// 用以設定接受的檔案類型              /// </SUMMARY>                          public string Accept { get; set; }            /// <SUMMARY>              /// 擷取或設定request類中的ContentType屬性              /// 用以佈建要求的媒體類型              /// </SUMMARY>                        public string ContentType { get; set; }            /// <SUMMARY>              /// 擷取或設定request類中的UserAgent屬性              /// 用以佈建要求的用戶端資訊              /// </SUMMARY>              public string UserAgent { get; set; }            /// <SUMMARY>              /// 擷取或設定request類中的Method屬性              /// 可以將 Method 屬性設定為任何 HTTP 1.1 協議謂詞：GET、HEAD、POST、PUT、DELETE、TRACE 或 OPTIONS。              /// 如果 ContentLength 屬性被設定為 -1 以外的任何值，則必須將 Method 屬性設定為上傳資料的協議屬性。              /// </SUMMARY>                          public string Method { get; set; }            /// <summary>            /// 發送的資料            /// </summary>            public byte[] PostData { get; set; }        }        /// <SUMMARY>          /// 構建一個httt請求以擷取目標連結的cookies,需要傳入目標的登入地址和相關的post資訊,返回完成登入的cookies,以及返回的html內容          /// </SUMMARY>          /// <PARAM name="url">登入頁面的地址</PARAM>          /// <PARAM name="post">post資訊</PARAM>          /// <PARAM name="strHtml">輸出的html代碼</PARAM>          /// <PARAM name="rppt">請求的標題所需要的相關屬性設定</PARAM>          /// <RETURNS>請求完成後的cookies</RETURNS>          public static CookieCollection GetCookie(string url, RequestParam rppt, out string strHtml)        {            CookieCollection ckclReturn = new CookieCollection();            CookieContainer cc = new CookieContainer();            HttpWebRequest hwRequest;            HttpWebResponse hwResponse;            Stream stream;            hwRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));            hwRequest.CookieContainer = cc;            if (rppt != null)            {                hwRequest.Accept = rppt.Accept;                hwRequest.ContentType = rppt.ContentType;                hwRequest.UserAgent = rppt.UserAgent;                hwRequest.Method = rppt.Method;                hwRequest.ContentLength = rppt.PostData.Length;                //寫入標題                  stream = hwRequest.GetRequestStream();                stream.Write(rppt.PostData, 0, rppt.PostData.Length);                stream.Close();            }            //發送請求擷取響應內容              try            {                hwResponse = (HttpWebResponse)hwRequest.GetResponse();            }            catch            {                strHtml = "";                return ckclReturn;            }            stream = hwResponse.GetResponseStream();            StreamReader sReader = new StreamReader(stream, Encoding.UTF8);            strHtml = sReader.ReadToEnd();            sReader.Close();            stream.Close();            //擷取緩衝內容              ckclReturn = hwResponse.Cookies;            return ckclReturn;        }        /// <SUMMARY>          /// 根據已經擷取的有效cookies來擷取目標連結的內容          /// </SUMMARY>          /// <PARAM name="strUri">目標連結的url</PARAM>          ///<PARAM name="post">post的byte資訊</PARAM>          /// <PARAM name="ccl">已經擷取到的有效cookies</PARAM>          /// <PARAM name="rppt">頭屬性的相關設定</PARAM>          /// <RETURNS>目標串連的純文字:"txt/html"</RETURNS>          public static string GetHtmlByCookies(string strUri, byte[] post, CookieCollection ccl, RequestParam rppt)        {            CookieContainer cc = new CookieContainer();            HttpWebRequest hwRequest;            HttpWebResponse hwResponse;            //構建即將發送的包頭                     hwRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(strUri));            cc.Add(ccl);            hwRequest.CookieContainer = cc;            hwRequest.Accept = rppt.Accept;            hwRequest.ContentType = rppt.ContentType;            hwRequest.UserAgent = rppt.UserAgent;            hwRequest.Method = rppt.Method;            hwRequest.ContentLength = post.Length;            //寫入post資訊              Stream stream;            stream = hwRequest.GetRequestStream();            stream.Write(post, 0, post.Length);            stream.Close();            //發送請求擷取響應內容              try            {                hwResponse = (HttpWebResponse)hwRequest.GetResponse();            }            catch            {                return "";            }            stream = hwResponse.GetResponseStream();            StreamReader sReader = new StreamReader(stream, Encoding.Default);            string strHtml = sReader.ReadToEnd();            sReader.Close();            stream.Close();            //傳回值                        return strHtml;        }        /// <summary>          /// 根據泛型來構建字串用於post          /// </summary>          /// <param name="dir">帶有索引值對的泛型</param>          /// <returns>構建完畢的字串</returns>          public static byte[] CreatePostData(Dictionary<string, string> dir)        {            StringBuilder strPost = new StringBuilder();            foreach (KeyValuePair<string, string> kvp in dir)            {                strPost.Append(kvp.Key);                strPost.Append('=');                if (!string.IsNullOrWhiteSpace(kvp.Value))                {                    strPost.Append(System.Web.HttpUtility.UrlEncode(kvp.Value));                }                strPost.Append('&');            }            return CreatePostData(strPost.ToString().TrimEnd('&'));        }        public static byte[] CreatePostData(string input)        {            return Encoding.Default.GetBytes(input);        }        /// <summary>        /// 向指定uri發起GET請求        /// </summary>        /// <param name="uri"></param>        /// <param name="request"></param>        /// <returns></returns>        public static string GET(string url)        {            WebClient wc = new WebClient();            wc.Encoding = System.Text.Encoding.UTF8;            string s = wc.DownloadString(url);            s = HttpUtility.UrlDecode(s);            return s;        }    }    /// <summary>      /// 有關HTTP請求的輔助類      /// </summary>      public class HttpWebResponseUtility    {        private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";        /// <summary>          /// 建立GET方式的HTTP請求          /// </summary>          /// <param name="url">請求的URL</param>          /// <param name="timeout">請求的逾時時間</param>          /// <param name="userAgent">請求的用戶端瀏覽器資訊，可以為空白</param>          /// <param name="cookies">隨同HTTP請求發送的Cookie資訊，如果不需要身分識別驗證可以為空白</param>          /// <returns></returns>          public static HttpWebResponse CreateGetHttpResponse(string url, IDictionary<string, string> parameters, int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies)        {            if (string.IsNullOrEmpty(url))            {                throw new ArgumentNullException("url");            }            StringBuilder buffer = new StringBuilder();            if (!(parameters == null || parameters.Count == 0))            {                int i = 0;                foreach (string key in parameters.Keys)                {                    if (i > 0)                    {                        buffer.AppendFormat("&{0}={1}", key, parameters[key]);                    }                    else                    {                        buffer.AppendFormat("{0}={1}", key, parameters[key]);                    }                    i++;                }            }            if (buffer.Length > 1)            {                url = url + "?" + buffer.ToString();            }            url = HttpUtility.UrlDecode(url);            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;            request.Method = "GET";            request.UserAgent = DefaultUserAgent;            if (!string.IsNullOrEmpty(userAgent))            {                request.UserAgent = userAgent;            }            if (timeout.HasValue)            {                request.Timeout = timeout.Value;            }            if (cookies != null)            {                request.CookieContainer = new CookieContainer();                request.CookieContainer.Add(cookies);            }            return request.GetResponse() as HttpWebResponse;        }        /// <summary>          /// 建立POST方式的HTTP請求          /// </summary>          /// <param name="url">請求的URL</param>          /// <param name="parameters">隨同請求POST的參數名稱及參數值字典</param>          /// <param name="timeout">請求的逾時時間</param>          /// <param name="userAgent">請求的用戶端瀏覽器資訊，可以為空白</param>          /// <param name="requestEncoding">發送HTTP請求時所用的編碼</param>          /// <param name="cookies">隨同HTTP請求發送的Cookie資訊，如果不需要身分識別驗證可以為空白</param>          /// <returns></returns>          public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies)        {            if (string.IsNullOrEmpty(url))            {                throw new ArgumentNullException("url");            }            if (requestEncoding == null)            {                throw new ArgumentNullException("requestEncoding");            }            HttpWebRequest request = null;            //如果是發送HTTPS請求              if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))            {                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);                request = WebRequest.Create(url) as HttpWebRequest;                request.ProtocolVersion = HttpVersion.Version10;            }            else            {                request = WebRequest.Create(url) as HttpWebRequest;            }            request.Method = "POST";            // request.ContentType = "application/x-www-form-urlencoded";            request.ContentType = "application/json";            if (!string.IsNullOrEmpty(userAgent))            {                request.UserAgent = userAgent;            }            else            {                request.UserAgent = DefaultUserAgent;            }            if (timeout.HasValue)            {                request.Timeout = timeout.Value;            }            if (cookies != null)            {                request.CookieContainer = new CookieContainer();                request.CookieContainer.Add(cookies);            }            //如果需要POST資料              if (!(parameters == null || parameters.Count == 0))            {                StringBuilder buffer = new StringBuilder();                int i = 0;                foreach (string key in parameters.Keys)                {                    if (i > 0)                    {                        buffer.AppendFormat("&{0}={1}", key, parameters[key]);                    }                    else                    {                        buffer.AppendFormat("{0}={1}", key, parameters[key]);                    }                    i++;                }                byte[] data = requestEncoding.GetBytes(buffer.ToString());                using (Stream stream = request.GetRequestStream())                {                    stream.Write(data, 0, data.Length);                }            }            return request.GetResponse() as HttpWebResponse;        }        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)        {            return true; //總是接受          }        public static string PostXml(string url, string xml)        {            byte[] bytes = Encoding.UTF8.GetBytes(xml);            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);            request.Method = "POST";            request.ContentLength = bytes.Length;            request.ContentType = "text/xml";            using (Stream requestStream = request.GetRequestStream())            {                requestStream.Write(bytes, 0, bytes.Length);            }            HttpWebResponse response = (HttpWebResponse)request.GetResponse();            if (response.StatusCode != HttpStatusCode.OK)            {                string message = String.Format("POST failed. Received HTTP {0}",                response.StatusCode);                throw new ApplicationException(message);            }            System.IO.StreamReader sr = new StreamReader(response.GetResponseStream(), System.Text.Encoding.GetEncoding("utf-8"));            string res = sr.ReadToEnd();            sr.Close();            response.Close();            return res;        }    }}

調用

string requestUrl = CoreInterface.ApiDomain + "api/Login/AddQRLog?grid={0}&ad={1}&grName={2}&vc={3}&br={4}&sc={5}&ts={6}&ps={7}";            requestUrl = string.Format(requestUrl, grid, ad, grName, vc, br, sc, ts, ps);            string resultJson = "";            //try            //{                HttpWebResponse response = HttpWebResponseUtility.CreateGetHttpResponse(requestUrl, null, 1000000, "", null, null);                System.IO.StreamReader sr = new System.IO.StreamReader(response.GetResponseStream());                resultJson = sr.ReadToEnd();                sr.Close();            //}            //catch (Exception)            //{            //    return RedirectToAction("Index", "Error");            //}

 

C# 內建JSON轉換類

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Runtime.Serialization.Json;namespace AirMedia.Wap.Core{    public static class JsonHelper    {        #region DataContractJsonSerializer        /// <summary>        /// 對象轉換成json        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="jsonObject">需要格式化的對象</param>        /// <returns>Json字串</returns>        public static string DataContractJsonSerialize<T>(T jsonObject)        {            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));            string json = null;            using (MemoryStream ms = new MemoryStream()) //定義一個stream用來存發序列化之後的內容            {                serializer.WriteObject(ms, jsonObject);                json = Encoding.UTF8.GetString(ms.GetBuffer()); //將stream讀取成一個字串形式的資料，並且返回                ms.Close();            }            return json;        }        /// <summary>        /// json字串轉換成對象        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="json">要轉換成對象的json字串</param>        /// <returns></returns>        public static T DataContractJsonDeserialize<T>(string json)        {            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));            T obj = default(T);            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))            {                obj = (T)serializer.ReadObject(ms);                ms.Close();            }            return obj;        }        #endregion    }}

 

c語言中符號<<是什

左移運算子（<<）

將一個運算對象的各二進位位全部左移若干位（左邊的二進位位丟棄，右邊補0）。

例：a = a << 2 將a的二進位位左移2位，右補0，

左移1位後a = a * 2;

若左移時捨棄的高位不包含1，則每左移一位，相當於該數乘以2。
右移運算子（>>）

將一個數的各二進位位全部右移若干位，正數左補0，負數左補1，右邊丟棄。

運算元每右移一位，相當於該數除以2。

例如：a = a >> 2 將a的二進位位右移2位，

左補0 or 補1 得看被移數是正還是負。
 
c語言中符號<<是什

左移運算子（<<）

將一個運算對象的各二進位位全部左移若干位（左邊的二進位位丟棄，右邊補0）。

例：a = a << 2 將a的二進位位左移2位，右補0，

左移1位後a = a * 2;

若左移時捨棄的高位不包含1，則每左移一位，相當於該數乘以2。
右移運算子（>>）

將一個數的各二進位位全部右移若干位，正數左補0，負數左補1，右邊丟棄。

運算元每右移一位，相當於該數除以2。

例如：a = a >> 2 將a的二進位位右移2位，

左補0 or 補1 得看被移數是正還是負。