C# HttpClientHelper

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public class HttpClientHelper
   {
 
       /// <summary>
       /// get请求
       /// </summary>
       /// <param name="url"></param>
       /// <returns></returns>
       public static string GetResponse(string url, out string statusCode)
       {
           if (url.StartsWith("https")) { System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
 
 
           using (var httpClient = new HttpClient())
           {
               httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
               using (HttpResponseMessage response = httpClient.GetAsync(url).Result)
               {
                   statusCode = response.StatusCode.ToString();
                   if (response.IsSuccessStatusCode)
                   {
                       string result = response.Content.ReadAsStringAsync().Result;
                       return result;
                   }
                   return null;
               }
           }
       }
       public static string RestfulGet(string url)
       {
           HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
           // Get response
           using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
           {
               // Get the response stream
               StreamReader reader = new StreamReader(response.GetResponseStream());
               // Console application output
               return reader.ReadToEnd();
           }
       }
       public static T GetResponse<T>(string url)where T : class, new()
       {
           if (url.StartsWith("https")) { System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
           using (var httpClient = new HttpClient()) 
           {
               httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
               using (HttpResponseMessage response = httpClient.GetAsync(url).Result) 
               {
                   T result = default(T);
                   if (response.IsSuccessStatusCode)
                   {
                       Task<string> t = response.Content.ReadAsStringAsync();
                       string s = t.Result;
                       result = JsonConvert.DeserializeObject<T>(s);
                   }
                   return result;
               }
           }
       }
       /// <summary>
       /// GET请求
       /// </summary>
       /// <param name="url"></param>
       /// <returns></returns>
       public static string GetResponse(string url)
       {
           if (url.StartsWith("https"))
           { ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
 
           using (HttpClient httpClient = new HttpClient())
           {
               using (HttpResponseMessage response = httpClient.GetAsync(url).Result)
               {
                   if (response.IsSuccessStatusCode)
                   {
                       string result = response.Content.ReadAsStringAsync().Result;
                       return result;
                   }
                   return null;
               }
           }
       }
 
 
       /// <summary>
       /// post请求
       /// </summary>
       /// <param name="url"></param>
       /// <param name="postData">post数据</param>
       /// <returns></returns>
       public static string PostResponse(string url, string postData, out string statusCode)
       {
           if (url.StartsWith("https")) { System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
           using (HttpContent httpContent = new StringContent(postData)) 
           {
               httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
               httpContent.Headers.ContentType.CharSet = "utf-8";
               using (HttpClient httpClient = new HttpClient())
               {
                   using (HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result)
                   {
                       statusCode = response.StatusCode.ToString();
                       if (response.IsSuccessStatusCode)
                       {
                           string result = response.Content.ReadAsStringAsync().Result;
                           return result;
                       }
                       return null;
                   }
               }
           }
       }
 
       /// <summary>
       /// 发起post请求
       /// </summary>
       /// <typeparam name="T"></typeparam>
       /// <param name="url">url</param>
       /// <param name="postData">post数据</param>
       /// <returns></returns>
       public static T PostResponse<T>(string url, string postData)where T : class, new()
       {
           if (url.StartsWith("https")) { System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
           using (HttpContent httpContent = new StringContent(postData)) 
           {
               httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
               using (HttpClient httpClient = new HttpClient())
               {
                   T result = default(T);
                   using (HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result)
                   {
                       if (response.IsSuccessStatusCode)
                       {
                           Task<string> t = response.Content.ReadAsStringAsync();
                           string s = t.Result;
 
                           result = JsonConvert.DeserializeObject<T>(s);
                       }
                       return result;
                   }
               }
           } 
       }
 
 
 
 
       public static string PostResponse(string url, string postData, string token, string appId, string serviceURL, out string statusCode)
       {
           if (url.StartsWith("https")) { System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
 
 
           using (HttpContent httpContent = new StringContent(postData))
           {
               httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
               httpContent.Headers.ContentType.CharSet = "utf-8";
               httpContent.Headers.Add("token", token);
               httpContent.Headers.Add("appId", appId);
               httpContent.Headers.Add("serviceURL", serviceURL);
               using (HttpClient httpClient = new HttpClient())
               {
                   using (HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result)
                   {
                       statusCode = response.StatusCode.ToString();
                       if (response.IsSuccessStatusCode)
                       {
                           string result = response.Content.ReadAsStringAsync().Result;
                           return result;
                       }
                       return null;
                   }
               }
           }
       }
 
       /// <summary>
       /// 修改请求
       /// </summary>
       /// <param name="url"></param>
       /// <param name="postData"></param>
       /// <returns></returns>
       public static string PatchResponse(string url, string postData)
       {
 
           HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
           httpWebRequest.ContentType = "application/x-www-form-urlencoded";
           httpWebRequest.Method = "PATCH";
 
           byte[] btBodys = Encoding.UTF8.GetBytes(postData);
           httpWebRequest.ContentLength = btBodys.Length;
           httpWebRequest.GetRequestStream().Write(btBodys, 0, btBodys.Length);
 
           using (HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse()) 
           {
               using (StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream()))
               {
                   string responseContent = streamReader.ReadToEnd();
                   httpWebResponse.Close();
                   streamReader.Close();
                   httpWebRequest.Abort();
                   httpWebResponse.Close();
                   return responseContent;
               }
           }
       }
 
       /// <summary>
       /// 创建Form表单API请求
       /// </summary>
       /// <param name="url"></param>
       /// <param name="postData"></param>
       /// <returns></returns>
       public static string CreateFormResponse(string url, string postData)
       {
           if (url.StartsWith("https")) { ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
 
           using (HttpContent httpContent = new StringContent(postData)) 
           {
               httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded") { CharSet = "utf-8" };
               using (HttpClient httpClient = new HttpClient())
               {
                   using (HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result)
                   {
                       if (response.IsSuccessStatusCode)
                       {
                           string result = response.Content.ReadAsStringAsync().Result;
                           return result;
                       }
                       return null;
                   }
               }
           }
                
       }
 
       /// <summary>
       /// 删除API请求
       /// </summary>
       /// <param name="url"></param>
       /// <returns></returns>
       public static bool DeleteResponse(string url)
       {
           if (url.StartsWith("https")) { ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
           using (HttpClient httpClient = new HttpClient()) 
           {
               using (HttpResponseMessage response = httpClient.DeleteAsync(url).Result)
               {
                   return response.IsSuccessStatusCode;
               }
           }   
       }
 
       /// <summary>
       /// 修改或者更改API    
       /// </summary>
       /// <param name="url"></param>
       /// <param name="postData"></param>
       /// <returns></returns>
       public static string PutResponse(string url, string postData)
       {
           if (url.StartsWith("https")) { ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }
 
 
           using (HttpContent httpContent = new StringContent(postData)) 
           {
               httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded") { CharSet = "utf-8" };
               using (HttpClient httpClient = new HttpClient())
               {
                   using (HttpResponseMessage response = httpClient.PutAsync(url, httpContent).Result)
                   {
                       if (response.IsSuccessStatusCode)
                       {
                           string result = response.Content.ReadAsStringAsync().Result;
                           return result;
                       }
                       return null;
                   }
               }
           }
       }
 
       
 
 
 
   }