public class HttpClientHelper{// 執(zhí)行post操作public static string doPost(string url, Dictionary<string, string> parameters, int timeOutInMillisecond){using (HttpClient client = new HttpClient()){HttpContent content = new MyFormUrlEncodedContent(parameters);Task<HttpResponseMessage> task = client.PostAsync(url, content);if (task.Wait(timeOutInMillisecond)){HttpResponseMessage response = task.Result;if (response.StatusCode == HttpStatusCode.OK){Task<string> result = response.Content.ReadAsStringAsync();result.Wait();return result.Result;}}}return null;}public static string doPostJson(string url, string jsonData, string cookieValue, int timeOutInMillisecond){try{HttpClientHandler handler = new HttpClientHandler() { UseCookies = false };//手動(dòng)headers添加cookies.using (HttpClient client = new HttpClient(handler)){HttpContent requestContent = new StringContent(jsonData);requestContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");if (!string.IsNullOrEmpty(cookieValue)){requestContent.Headers.Add("Cookie", cookieValue);}Task<HttpResponseMessage> task = client.PostAsync(url, requestContent);#region 構(gòu)建請(qǐng)求方式2//HttpRequestMessage requestMessage = new HttpRequestMessage(System.Net.Http.HttpMethod.Post, requestUrl);//requestMessage.Content = new StringContent(jsonData, Encoding.UTF8, "application/json");//if (!string.IsNullOrEmpty(cookieValue))//{// requestMessage.Headers.Add("Cookie", cookieValue);//}//Task<HttpResponseMessage> task = client.SendAsync(requestMessage);#endregionif (task.Wait(timeOutInMillisecond)){HttpResponseMessage response = task.Result;if (response.StatusCode == HttpStatusCode.OK){Task<string> result = response.Content.ReadAsStringAsync();result.Wait();string content = result.Result;LogUtil.Logger.Debug("Debug:HttpClientHelper.doPostJson請(qǐng)求結(jié)果：" + content);return content;}}}}catch (Exception ex){LogUtil.Logger.Error(string.Format("Error:HttpClientHelper.doPostJson-------->error:{0}", ex.Message));}return "";}}/// <summary>/// 默認(rèn)的FormUrlEncodedContent碰到超長(zhǎng)的文本會(huì)出現(xiàn)uri too long的異常，這里自己封裝一個(gè)/// 參考來(lái)自 stackoverflow/// </summary>public class MyFormUrlEncodedContent : ByteArrayContent{public MyFormUrlEncodedContent(IEnumerable<KeyValuePair<string, string>> nameValueCollection): base(MyFormUrlEncodedContent.GetContentByteArray(nameValueCollection)){base.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/x-www-form-urlencoded");}private static byte[] GetContentByteArray(IEnumerable<KeyValuePair<string, string>> nameValueCollection){StringBuilder stringBuilder = new StringBuilder();foreach (KeyValuePair<string, string> current in nameValueCollection){if (stringBuilder.Length > 0){stringBuilder.Append('&');}stringBuilder.Append(MyFormUrlEncodedContent.Encode(current.Key));stringBuilder.Append('=');stringBuilder.Append(MyFormUrlEncodedContent.Encode(current.Value));}return Encoding.Default.GetBytes(stringBuilder.ToString());}private static string Encode(string data){if (string.IsNullOrEmpty(data)){return string.Empty;}return WebUtility.UrlEncode(data);}}

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