C# 请求帮助类

RestSharp版(不同版本，调用上有差异，本处使用的版本是：108.0.3.0)

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/// <summary>    /// HTTP请求帮助类    /// </summary>    public static class RequestHelper    {        /// <summary>        /// 默认请求超时时间（毫秒）        /// </summary>        private const int TimeOut = 15 * 1000;          #region post请求          public static T HttpPost<T>(string url, object data, Dictionary<string, string> headerDic = null, int timeOut = TimeOut, string contentType = "application/json")        {            return SerializeHelper.Deserialize<T>(HttpPost(url, data, headerDic, timeOut, contentType));        }          public static string HttpPost(string url, object data, Dictionary<string, string> headerDic = null, int timeOut = TimeOut, string contentType = "application/json")        {            HttpsDefaultSet(url);              //请求            RestRequest request = new RestRequest(url, Method.Post);            AddHeaderInfo(request, headerDic);            request.Timeout = timeOut;            request.AddHeader("Content-Type", contentType);            if (data != null)            {                if (contentType == "application/x-www-form-urlencoded")                {                    request.AddStringBody(Convert.ToString(data), DataFormat.Binary);                }                else                {                    request.AddStringBody(SerializeHelper.ToJson(data), DataFormat.Json);                }            }              //响应            RestResponse response;            using (var client = new RestClient())            {                response = client.Execute(request);            }            if (response.StatusCode == HttpStatusCode.OK)            {                return response.Content;            }            throw new Exception($"HttpPost请求出错(状态码：{(int)response.StatusCode},内容：{response.Content})");        }        #endregion          #region  get请求          public static T HttpGet<T>(string url, Dictionary<string, string> urlParameters = null, Dictionary<string, string> headerDic = null, string referer = null, int timeOut = TimeOut)        {            return SerializeHelper.Deserialize<T>(HttpGet(url, urlParameters, headerDic, referer, timeOut));        }          public static string HttpGet(string url, Dictionary<string, string> urlParameters = null, Dictionary<string, string> headerDic = null, string referer = null, int timeOut = TimeOut)        {            HttpsDefaultSet(url);              //请求            RestRequest request = new RestRequest(BuildQuery(url, urlParameters));            request.Timeout = timeOut;            AddHeaderInfo(request, headerDic);            if (string.IsNullOrEmpty(referer) == false)            {                request.AddHeader("referer", referer);            }              //响应            RestResponse response;            using (var client = new RestClient())            {                response = client.Execute(request);            }            if (response.StatusCode == HttpStatusCode.OK)            {                return response.Content;            }            throw new Exception($"HttpGet请求出错(状态码：{(int)response.StatusCode},内容：{response.Content})");        }        #endregion          #region 其他辅助方法        public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)        {            return true;        }          /// <summary>        /// https默认设置        /// </summary>        private static void HttpsDefaultSet(string reqUrl)        {            //主要是解决https基础连接已关闭……的报错问题            if (reqUrl.StartsWith("https", StringComparison.OrdinalIgnoreCase))            {                //ServicePointManager.DefaultConnectionLimit = 200;                //System.GC.Collect();                //System.Threading.Thread.Sleep(5);                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(RequestHelper.CheckValidationResult);                ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;            }        }          /// <summary>        /// 添加请求头信息        /// </summary>        /// <param name="request"></param>        /// <param name="headerDic"></param>        public static void AddHeaderInfo(RestRequest request, Dictionary<string, string> headerDic)        {            if (headerDic != null)            {                foreach (var item in headerDic)                {                    request.AddHeader(item.Key, item.Value);                }            }        }          /// <summary>        /// 组装Get请求参数。        /// </summary>        /// <param name="url">请求地址</param>        /// <param name="parameters">Key-Value形式请求参数字典</param>        /// <returns>URL编码后的请求数据</returns>        public static string BuildQuery(string url, IDictionary<string, string> parameters)        {            string query = BuildQuery(parameters);            if (url.IndexOf("?") > -1)            {                query = "&" + query;            }            else            {                query = "?" + query;            }            return url + query;        }          /// <summary>        /// 组装Get请求参数。        /// </summary>        /// <param name="parameters">Key-Value形式请求参数字典</param>        /// <returns>URL编码后的请求数据</returns>        public static string BuildQuery(IDictionary<string, string> parameters)        {            StringBuilder postData = new StringBuilder();            if (parameters != null)            {                bool hasParam = false;                IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();                while (dem.MoveNext())                {                    string name = dem.Current.Key;                    string value = dem.Current.Value;                    // 忽略参数名或参数值为空的参数                    if (!string.IsNullOrEmpty(name))//&& !string.IsNullOrEmpty(value)                    {                        if (hasParam)                        {                            postData.Append("&");                        }                        postData.Append(name);                        postData.Append("=");                        postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));                        hasParam = true;                    }                }            }            return postData.ToString();        }        #region 获取客户端IP地址        /// <summary>        /// 获取客户端IP地址        /// </summary>        /// <returns></returns>        public static string GetIP()        {            string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];            if (string.IsNullOrEmpty(result))            {                result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];            }            if (string.IsNullOrEmpty(result))            {                result = HttpContext.Current.Request.UserHostAddress;            }            if (string.IsNullOrEmpty(result))            {                return "0.0.0.0";            }            return result;        }        #endregion          #endregion    }

　　

HttpWebRequest版 

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public class RequestHelper     {         public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)         {             return true;         }           #region  post 请求         public static string HttpPost(string url, object data, Dictionary<string, string> headerDic = null, int timeOut = 1000 * 10, string contentType = "application/json")         {             try             {                 string paramData = string.Empty;                 HttpsDefaultSet(url);                 HttpWebRequest wbRequest = (HttpWebRequest)WebRequest.Create(url);                 wbRequest.Method = "POST";                 wbRequest.Timeout = timeOut;                 wbRequest.KeepAlive = false;                 AddHeaderInfo(wbRequest, headerDic);                 wbRequest.ContentType = contentType;                 if (data != null)                 {                     if (data.GetType() == typeof(String) || wbRequest.ContentType == "application/x-www-form-urlencoded")                     {                         paramData = Convert.ToString(data);                     }                     else                     {                         paramData = SerializeHelper.ToJson(data);                         wbRequest.ContentLength = Encoding.UTF8.GetByteCount(paramData);                     }                 }                   using (Stream requestStream = wbRequest.GetRequestStream())                 {                     using (StreamWriter swrite = new StreamWriter(requestStream))                     {                         swrite.Write(paramData);                     }                 }                   using (HttpWebResponse wbResponse = (HttpWebResponse)wbRequest.GetResponse())                 {                     using (Stream responseStream = wbResponse.GetResponseStream())                     {                         using (StreamReader sread = new StreamReader(responseStream))                         {                               return sread.ReadToEnd();                         }                     }                 }             }             catch (Exception ex)             {                 Dictionary<string, string> exMsg = new Dictionary<string, string>();                 exMsg.Add("codeLocation", "RequestHelper-HttpPost");                 exMsg.Add("url", url);                 if (data != null)                 {                     exMsg.Add("data", SerializeHelper.ToJson(data));                 }                 if (headerDic != null && headerDic.Count > 0)                 {                     exMsg.Add("headerDic", SerializeHelper.ToJson(headerDic));                 }                 exMsg.Add("timeOut", timeOut.ToString());                WebLogHelper.Error(exMsg);                 throw ex;             }         }           public static T HttpPost<T>(string url, object data, Dictionary<string, string> headerDic = null, int timeOut = 1000 * 10, string contentType = "application/json")         {             return SerializeHelper.Deserialize<T>(HttpPost(url, data, headerDic, timeOut, contentType));         }         #endregion           #region  get请求         public static T HttpGet<T>(string url, Dictionary<string, string> urlParameters = null, Dictionary<string, string> headerDic = null, string referer = null, int timeOut = 1000 * 10)         {             return SerializeHelper.Deserialize<T>(HttpGet(url, urlParameters, headerDic, referer, timeOut));         }         public static string HttpGet(string url, Dictionary<string, string> urlParameters = null, Dictionary<string, string> headerDic = null, string referer = null, int timeOut = 1000 * 10)         {             try             {                 HttpsDefaultSet(url);                 //创建请求                 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(BuildQuery(url, urlParameters));                 //GET请求                 request.Method = "GET";                 request.ContentType = "text/html;charset=UTF-8";                 request.Referer = referer;                 request.Timeout = timeOut;                 request.KeepAlive = false;                 AddHeaderInfo(request, headerDic);                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())                 {                     using (Stream myResponseStream = response.GetResponseStream())                     {                         using (StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8")))                         {                             //返回内容                             return myStreamReader.ReadToEnd();                         }                     }                 }             }             catch (Exception ex)             {                 Dictionary<string, string> exMsg = new Dictionary<string, string>();                 exMsg.Add("codeLocation", "RequestHelper-HttpGet");                 exMsg.Add("url", url);                 if (urlParameters != null && urlParameters.Count > 0)                 {                     exMsg.Add("urlParameters", SerializeHelper.ToJson(urlParameters));                 }                 if (headerDic != null && headerDic.Count > 0)                 {                     exMsg.Add("headerDic", SerializeHelper.ToJson(headerDic));                 }                 exMsg.Add("referer", referer);                 exMsg.Add("timeOut", timeOut.ToString());                 WebLogHelper.Error(exMsg);                 throw ex;             }         }         #endregion           /// <summary>         /// https默认设置         /// </summary>         private static void HttpsDefaultSet(string reqUrl)         {             //主要是解决https基础连接已关闭……的问题             if (reqUrl.StartsWith("https", StringComparison.OrdinalIgnoreCase))             {                 //ServicePointManager.DefaultConnectionLimit = 200;                 //System.GC.Collect();                 //System.Threading.Thread.Sleep(5);                 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(RequestHelper.CheckValidationResult);                 ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;             }         }         /// <summary>         /// 添加请求头信息         /// </summary>         /// <param name="request"></param>         /// <param name="headerDic"></param>         public static void AddHeaderInfo(HttpWebRequest request, Dictionary<string, string> headerDic)         {             if (headerDic != null)             {                 foreach (var item in headerDic)                 {                     request.Headers.Add(item.Key, item.Value);                 }             }         }           /// <summary>         /// 组装Get请求参数。         /// </summary>         /// <param name="url">请求地址</param>         /// <param name="parameters">Key-Value形式请求参数字典</param>         /// <returns>URL编码后的请求数据</returns>         public static string BuildQuery(string url, IDictionary<string, string> parameters)         {             string query = BuildQuery(parameters);             if (url.IndexOf("?") > -1)             {                 query = "&" + query;             }             else             {                 query = "?" + query;             }             return url + query;         }           /// <summary>         /// 组装Get请求参数。         /// </summary>         /// <param name="parameters">Key-Value形式请求参数字典</param>         /// <returns>URL编码后的请求数据</returns>         public static string BuildQuery(IDictionary<string, string> parameters)         {             StringBuilder postData = new StringBuilder();             if (parameters != null)             {                 bool hasParam = false;                 IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();                 while (dem.MoveNext())                 {                     string name = dem.Current.Key;                     string value = dem.Current.Value;                     // 忽略参数名或参数值为空的参数                     if (!string.IsNullOrEmpty(name))//&& !string.IsNullOrEmpty(value)                     {                         if (hasParam)                         {                             postData.Append("&");                         }                         postData.Append(name);                         postData.Append("=");                         postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));                         hasParam = true;                     }                 }             }             return postData.ToString();         }         #region 获取客户端IP地址         /// <summary>         /// 获取客户端IP地址         /// </summary>         /// <returns></returns>         public static string GetIP()         {             if (HttpContext.Current == null)             {                 return null;             }             string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];             if (string.IsNullOrEmpty(result))             {                 result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];             }             if (string.IsNullOrEmpty(result))             {                 result = HttpContext.Current.Request.UserHostAddress;             }             if (string.IsNullOrEmpty(result))             {                 return "0.0.0.0";             }             return result;         }         #endregion     }