HttpWebRequest HttpClient

2018-06-17 22:46:50来源:未知 阅读 ()

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HttpWebRequest HttpClient 简单封装使用,支持https

HttpWebRequest

  1 using System;
  2 using System.Collections.Generic;
  3 using System.IO;
  4 using System.IO.Compression;
  5 using System.Linq;
  6 using System.Net;
  7 using System.Net.Security;
  8 using System.Security.Cryptography.X509Certificates;
  9 using System.Text;
 10 using TT.Utilities.Extends;
 11 
 12 namespace TT.Utilities.Web
 13 {
 14     public class HttpRequest
 15     {
 16         public static HttpWebRequest CreateHttpWebRequest(string url)
 17         {
 18             HttpWebRequest request;
 19             //如果是发送HTTPS请求  
 20             if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
 21             {
 22                 //ServicePointManager.DefaultConnectionLimit = 1000;
 23                 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
 24                 request = WebRequest.Create(url) as HttpWebRequest;
 25                 request.ProtocolVersion = HttpVersion.Version11;
 26             }
 27             else
 28             {
 29                 request = WebRequest.Create(url) as HttpWebRequest;
 30             }
 31             request.Proxy = null;
 32             request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
 33             return request;
 34         }
 35 
 36         /// <summary>
 37         /// 
 38         /// </summary>
 39         /// <param name="url">url</param>
 40         /// <param name="dic">参数</param>
 41         /// <param name="headerDic">请求头参数</param>
 42         /// <returns></returns>
 43         public static string DoPost(string url, Dictionary<string, string> dic, Dictionary<string, string> headerDic)
 44         {
 45             HttpWebRequest request = CreateHttpWebRequest(url);
 46             request.Method = "POST";
 47             request.Accept = "*/*";
 48             request.ContentType = HttpContentTypes.GetContentType(HttpContentTypes.HttpContentTypeEnum.JSON);
 49             if (headerDic != null && headerDic.Count > 0)
 50             {
 51                 foreach (var item in headerDic)
 52                 {
 53                     request.Headers.Add(item.Key, item.Value);
 54                 }
 55             }
 56             if (dic != null && dic.Count > 0)
 57             {
 58                 var jsonStr = Newtonsoft.Json.JsonConvert.SerializeObject(dic);
 59                 byte[] buffer = Encoding.UTF8.GetBytes(jsonStr);
 60                 request.ContentLength = buffer.Length;
 61                 try
 62                 {
 63                     request.GetRequestStream().Write(buffer, 0, buffer.Length);
 64                 }
 65                 catch (WebException ex)
 66                 {
 67                     throw ex;
 68                 }
 69             }
 70             else
 71             {
 72                 request.ContentLength = 0;
 73             }
 74             return HttpResponse(request);
 75         }
 76 
 77         public static string DoPost(string url, Dictionary<string, string> dic)
 78         {
 79             return DoPost(url, dic, null);
 80         }
 81 
 82         static object olock = new object();
 83         public static string HttpResponse(HttpWebRequest request)
 84         {
 85             try
 86             {
 87                 //lock (olock)
 88                 //{
 89                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
 90                 {
 91                     var contentEncodeing = response.ContentEncoding.ToLower();
 92 
 93                     if (!contentEncodeing.Contains("gzip") && !contentEncodeing.Contains("deflate"))
 94                     {
 95                         using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
 96                         {
 97                             return reader.ReadToEnd();
 98                         }
 99                     }
100                     else
101                     {
102                         #region gzip,deflate 压缩解压
103                         if (contentEncodeing.Contains("gzip"))
104                         {
105                             using (GZipStream stream = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
106                             {
107                                 using (StreamReader reader = new StreamReader(stream))
108                                 {
109                                     return reader.ReadToEnd();
110                                 }
111                             }
112                         }
113                         else //if (contentEncodeing.Contains("deflate"))
114                         {
115                             using (DeflateStream stream = new DeflateStream(response.GetResponseStream(), CompressionMode.Decompress))
116                             {
117                                 using (StreamReader reader = new StreamReader(stream))
118                                 {
119                                     return reader.ReadToEnd();
120                                 }
121                             }
122                         }
123                         #endregion gzip,deflate 压缩解压
124                     }
125                 }
126                 //}
127             }
128             catch (WebException ex)
129             {
130                 throw ex;
131             }
132         }
133 
134         public static string DoGet(string url, Dictionary<string, string> dic)
135         {
136             try
137             {
138                 var argStr = dic == null ? "" : dic.ToSortUrlParamString();
139                 argStr = string.IsNullOrEmpty(argStr) ? "" : ("?" + argStr);
140                 HttpWebRequest request = CreateHttpWebRequest(url + argStr);
141                 request.Method = "GET";
142                 request.ContentType = "application/json";
143                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
144                 {
145                     using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
146                     {
147                         return reader.ReadToEnd();
148                     }
149                 }
150             }
151             catch (Exception ex)
152             {
153                 throw ex;
154             }
155         }
156 
157         public static string DoGet(string url, Dictionary<string, string> dic, Dictionary<string, string> headerDic)
158         {
159             try
160             {
161                 var argStr = dic == null ? "" : dic.ToSortUrlParamString();
162                 argStr = string.IsNullOrEmpty(argStr) ? "" : ("?" + argStr);
163                 HttpWebRequest request = CreateHttpWebRequest(url + argStr);
164                 request.Method = "GET";
165                 request.ContentType = "application/json";
166                 foreach (var item in headerDic)
167                 {
168                     request.Headers.Add(item.Key, item.Value);
169                 }
170                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
171                 {
172                     using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
173                     {
174                         return reader.ReadToEnd();
175                     }
176                 }
177             }
178             catch (Exception ex)
179             {
180                 throw ex;
181             }
182         }
183 
184         private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
185         {
186             return true; //总是接受  
187         }
188     }
189 }
View Code

加入request timeout

  1 using System;
  2 using System.Collections.Generic;
  3 using System.IO;
  4 using System.IO.Compression;
  5 using System.Linq;
  6 using System.Net;
  7 using System.Net.Security;
  8 using System.Security.Cryptography.X509Certificates;
  9 using System.Text;
 10 using TT.Utilities.Extends;
 11 
 12 namespace TT.Utilities.Web
 13 {
 14     public class HttpRequest
 15     {
 16         public static HttpWebRequest CreateHttpWebRequest(string url, int timeoutSecond = 90)
 17         {
 18             HttpWebRequest request;
 19             //如果是发送HTTPS请求  
 20             if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
 21             {
 22                 //ServicePointManager.DefaultConnectionLimit = 1000;
 23                 ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
 24                 request = WebRequest.Create(url) as HttpWebRequest;
 25                 request.ProtocolVersion = HttpVersion.Version11;
 26             }
 27             else
 28             {
 29                 request = WebRequest.Create(url) as HttpWebRequest;
 30             }
 31             request.Proxy = null;
 32             request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
 33             request.Timeout = timeoutSecond * 1000;
 34             return request;
 35         }
 36 
 37         /// <summary>
 38         /// 
 39         /// </summary>
 40         /// <param name="url">url</param>
 41         /// <param name="dic">参数</param>
 42         /// <param name="headerDic">请求头参数</param>
 43         /// <returns></returns>
 44         public static string DoPost(string url, Dictionary<string, string> dic, Dictionary<string, string> headerDic, int timeoutSecond = 90)
 45         {
 46             HttpWebRequest request = CreateHttpWebRequest(url, timeoutSecond);
 47             request.Method = "POST";
 48             request.Accept = "*/*";
 49             request.ContentType = HttpContentTypes.GetContentType(HttpContentTypes.HttpContentTypeEnum.JSON);
 50             if (headerDic != null && headerDic.Count > 0)
 51             {
 52                 foreach (var item in headerDic)
 53                 {
 54                     request.Headers.Add(item.Key, item.Value);
 55                 }
 56             }
 57             if (dic != null && dic.Count > 0)
 58             {
 59                 var jsonStr = Newtonsoft.Json.JsonConvert.SerializeObject(dic);
 60                 byte[] buffer = Encoding.UTF8.GetBytes(jsonStr);
 61                 request.ContentLength = buffer.Length;
 62                 try
 63                 {
 64                     request.GetRequestStream().Write(buffer, 0, buffer.Length);
 65                 }
 66                 catch (WebException ex)
 67                 {
 68                     throw ex;
 69                 }
 70             }
 71             else
 72             {
 73                 request.ContentLength = 0;
 74             }
 75             return HttpResponse(request);
 76         }
 77 
 78         public static string DoPost(string url, Dictionary<string, string> dic, int timeoutSecond = 90)
 79         {
 80             return DoPost(url, dic, null, timeoutSecond);
 81         }
 82 
 83         static object olock = new object();
 84         public static string HttpResponse(HttpWebRequest request)
 85         {
 86             try
 87             {
 88                 //lock (olock)
 89                 //{
 90                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
 91                 {
 92                     var contentEncodeing = response.ContentEncoding.ToLower();
 93 
 94                     if (!contentEncodeing.Contains("gzip") && !contentEncodeing.Contains("deflate"))
 95                     {
 96                         using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
 97                         {
 98                             return reader.ReadToEnd();
 99                         }
100                     }
101                     else
102                     {
103                         #region gzip,deflate 压缩解压
104                         if (contentEncodeing.Contains("gzip"))
105                         {
106                             using (GZipStream stream = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
107                             {
108                                 using (StreamReader reader = new StreamReader(stream))
109                                 {
110                                     return reader.ReadToEnd();
111                                 }
112                             }
113                         }
114                         else //if (contentEncodeing.Contains("deflate"))
115                         {
116                             using (DeflateStream stream = new DeflateStream(response.GetResponseStream(), CompressionMode.Decompress))
117                             {
118                                 using (StreamReader reader = new StreamReader(stream))
119                                 {
120                                     return reader.ReadToEnd();
121                                 }
122                             }
123                         }
124                         #endregion gzip,deflate 压缩解压
125                     }
126                 }
127                 //}
128             }
129             catch (WebException ex)
130             {
131                 throw ex;
132             }
133         }
134 
135         public static string DoGet(string url, Dictionary<string, string> dic, int timeoutSecond = 90)
136         {
137             try
138             {
139                 var argStr = dic == null ? "" : dic.ToSortUrlParamString();
140                 argStr = string.IsNullOrEmpty(argStr) ? "" : ("?" + argStr);
141                 HttpWebRequest request = CreateHttpWebRequest(url + argStr, timeoutSecond);
142                 request.Method = "GET";
143                 request.ContentType = "application/json";
144                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
145                 {
146                     using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
147                     {
148                         return reader.ReadToEnd();
149                     }
150                 }
151             }
152             catch (Exception ex)
153             {
154                 throw ex;
155             }
156         }
157 
158         public static string DoGet(string url, Dictionary<string, string> dic, Dictionary<string, string> headerDic, int timeoutSecond = 90)
159         {
160             try
161             {
162                 var argStr = dic == null ? "" : dic.ToSortUrlParamString();
163                 argStr = string.IsNullOrEmpty(argStr) ? "" : ("?" + argStr);
164                 HttpWebRequest request = CreateHttpWebRequest(url + argStr, timeoutSecond);
165                 request.Method = "GET";
166                 request.ContentType = "application/json";
167                 foreach (var item in headerDic)
168                 {
169                     request.Headers.Add(item.Key, item.Value);
170                 }
171                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
172                 {
173                     using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
174                     {
175                         return reader.ReadToEnd();
176                     }
177                 }
178             }
179             catch (Exception ex)
180             {
181                 throw ex;
182             }
183         }
184 
185         private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
186         {
187             return true; //总是接受  
188         }
189     }
190 }
View Code

 

HttpClient

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Net;
  6 using System.Net.Http;
  7 using System.Net.Http.Headers;
  8 using TT.Utilities.Extends;
  9 using System.Net.Security;
 10 using System.Security.Cryptography.X509Certificates;
 11 
 12 namespace TT.Utilities.Web
 13 {
 14     public class HttpClientUti
 15     {
 16         /// <summary>
 17         /// post 提交json格式参数
 18         /// </summary>
 19         /// <param name="url">url</param>
 20         /// <param name="postJson">json字符串</param>
 21         /// <returns></returns>
 22         public static string DoPost(string url, string postJson)
 23         {
 24             HttpContent content = new StringContent(postJson);
 25             content.Headers.ContentType = new MediaTypeHeaderValue(HttpContentTypes.GetContentType(HttpContentTypes.HttpContentTypeEnum.JSON));
 26             return DoPost(url, content);
 27         }
 28 
 29         /// <summary>
 30         /// post 提交json格式参数
 31         /// </summary>
 32         /// <param name="url">url</param>
 33         /// <param name="argDic">参数字典</param>
 34         /// <param name="headerDic">请求头字典</param>
 35         /// <returns></returns>
 36         public static string DoPost(string url, Dictionary<string, string> argDic, Dictionary<string, string> headerDic)
 37         {
 38             argDic.ToSortUrlParamString();
 39             var jsonStr = Newtonsoft.Json.JsonConvert.SerializeObject(argDic);
 40             HttpContent content = new StringContent(jsonStr);
 41             content.Headers.ContentType = new MediaTypeHeaderValue(HttpContentTypes.GetContentType(HttpContentTypes.HttpContentTypeEnum.JSON));
 42             if (headerDic != null)
 43             {
 44                 foreach (var item in headerDic)
 45                 {
 46                     content.Headers.Add(item.Key, item.Value);
 47                 }
 48             }
 49             return DoPost(url, content);
 50         }
 51 
 52         /// <summary>
 53         /// HttpClient POST 提交
 54         /// </summary>
 55         /// <param name="url">url</param>
 56         /// <param name="content">HttpContent</param>
 57         /// <returns></returns>
 58         public static string DoPost(string url, HttpContent content)
 59         {
 60             try
 61             {
 62                 var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
 63                 using (var http = new HttpClient(handler))
 64                 {
 65                     if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
 66                     {
 67                         ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
 68                     }
 69 
 70                     var response = http.PostAsync(url, content).Result;
 71                     //确保HTTP成功状态值
 72                     response.EnsureSuccessStatusCode();
 73                     //await异步读取最后的JSON(注意此时gzip已经被自动解压缩了,因为上面的AutomaticDecompression = DecompressionMethods.GZip)
 74                     var reJson = response.Content.ReadAsStringAsync().Result;
 75                     return reJson;
 76                 }
 77             }
 78             catch (Exception ex)
 79             {
 80                 throw ex;
 81             }
 82         }
 83 
 84         /// <summary>
 85         /// HttpClient实现Get请求
 86         /// </summary>
 87         public static string DoGet(string url)
 88         {
 89             try
 90             {
 91                 var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
 92                 using (var http = new HttpClient(handler))
 93                 {
 94                     var response = http.GetAsync(url).Result;
 95                     response.EnsureSuccessStatusCode();
 96                     return response.Content.ReadAsStringAsync().Result;
 97                 }
 98             }
 99             catch (Exception ex)
100             {
101                 return ex.Message + "," + ex.Source + "," + ex.StackTrace;
102             }
103         }
104 
105         /// <summary>
106         /// HttpClient实现Get请求
107         /// <param name="arg">参数字典</param>
108         /// </summary>
109         public static string DoGet(string url, IDictionary<string, string> arg)
110         {
111             var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
112             string argStr = "?";
113             foreach (var item in arg)
114             {
115                 argStr += item.Key + "=" + item.Value + "&";
116             }
117             argStr = argStr.TrimEnd('&');
118             url = url + argStr;
119             return DoGet(url);
120         }
121 
122         /// <summary>
123         /// HttpClient Get 提交
124         /// </summary>
125         /// <param name="url"></param>
126         /// <param name="arg"></param>
127         /// <param name="headerDic"></param>
128         /// <returns></returns>
129         public static string DoGet(string url, IDictionary<string, string> arg, IDictionary<string, string> headerDic)
130         {
131             try
132             {
133                 var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
134                 if (arg != null && arg.Count > 0)
135                 {
136                     string argStr = "?";
137                     foreach (var item in arg)
138                     {
139                         argStr += item.Key + "=" + item.Value + "&";
140                     }
141                     argStr = argStr.TrimEnd('&');
142                     url = url + argStr;
143                 }
144                 using (var http = new HttpClient(handler))
145                 {
146                     if (headerDic != null)
147                     {
148                         foreach (var item in headerDic)
149                         {
150                             http.DefaultRequestHeaders.Add(item.Key, item.Value);
151                         }
152                     }
153                     //await异步等待回应
154                     var response = http.GetStringAsync(url).Result;
155                     return response;
156                 }
157             }
158             catch (Exception ex)
159             {
160                 throw ex;
161             }
162         }
163 
164         private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
165         {
166             return true; //总是接受  
167         } 
168     }
169 }
View Code

单例模式 HttpClient

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Net;
  6 using System.Net.Http;
  7 using System.Net.Http.Headers;
  8 using TT.Utilities.Extends;
  9 using System.Security.Cryptography.X509Certificates;
 10 using System.Net.Security;
 11 
 12 namespace TT.Utilities.Web
 13 {
 14     public class HttpClientSingleton
 15     {
 16         public static readonly HttpClient http = null;
 17         static HttpClientSingleton()
 18         {
 19             var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
 20             ServicePointManager.ServerCertificateValidationCallback = CheckValidationResult;
 21             http = new HttpClient(handler);
 22         }
 23 
 24         /// <summary>
 25         /// post 提交json格式参数
 26         /// </summary>
 27         /// <param name="url">url</param>
 28         /// <param name="postJson">json字符串</param>
 29         /// <returns></returns>
 30         public static string DoPost(string url, string postJson)
 31         {
 32             HttpContent content = new StringContent(postJson);
 33             content.Headers.ContentType = new MediaTypeHeaderValue(HttpContentTypes.GetContentType(HttpContentTypes.HttpContentTypeEnum.JSON));
 34             return DoPost(url, content);
 35         }
 36 
 37         /// <summary>
 38         /// post 提交json格式参数
 39         /// </summary>
 40         /// <param name="url">url</param>
 41         /// <param name="argDic">参数字典</param>
 42         /// <param name="headerDic">请求头字典</param>
 43         /// <returns></returns>
 44         public static string DoPost(string url, Dictionary<string, string> argDic, Dictionary<string, string> headerDic)
 45         {
 46             argDic.ToSortUrlParamString();
 47             var jsonStr = Newtonsoft.Json.JsonConvert.SerializeObject(argDic);
 48             HttpContent content = new StringContent(jsonStr);
 49             content.Headers.ContentType = new MediaTypeHeaderValue(HttpContentTypes.GetContentType(HttpContentTypes.HttpContentTypeEnum.JSON));
 50             if (headerDic != null)
 51             {
 52                 foreach (var item in headerDic)
 53                 {
 54                     content.Headers.Add(item.Key, item.Value);
 55                 }
 56             }
 57             return DoPost(url, content);
 58         }
 59 
 60         /// <summary>
 61         /// HttpClient POST 提交
 62         /// </summary>
 63         /// <param name="url">url</param>
 64         /// <param name="content">HttpContent</param>
 65         /// <returns></returns>
 66         public static string DoPost(string url, HttpContent content)
 67         {
 68             try
 69             {
 70                 var response = http.PostAsync(url, content).Result;
 71                 //确保HTTP成功状态值
 72                 response.EnsureSuccessStatusCode();
 73                 //await异步读取最后的JSON(注意此时gzip已经被自动解压缩了,因为上面的AutomaticDecompression = DecompressionMethods.GZip)
 74                 var reJson = response.Content.ReadAsStringAsync().Result;
 75                 return reJson;
 76             }
 77             catch (Exception ex)
 78             {
 79                 throw ex;
 80             }
 81         }
 82 
 83         /// <summary>
 84         /// HttpClient实现Get请求
 85         /// </summary>
 86         public static string DoGet(string url)
 87         {
 88             try
 89             {
 90                 var response = http.GetAsync(url).Result;
 91                 response.EnsureSuccessStatusCode();
 92                 return response.Content.ReadAsStringAsync().Result;
 93             }
 94             catch (Exception ex)
 95             {
 96                 return ex.Message + "," + ex.Source + "," + ex.StackTrace;
 97             }
 98         }
 99 
100         /// <summary>
101         /// HttpClient实现Get请求
102         /// <param name="arg">参数字典</param>
103         /// </summary>
104         public static string DoGet(string url, IDictionary<string, string> arg)
105         {
106             string argStr = "?";
107             foreach (var item in arg)
108             {
109                 argStr += item.Key + "=" + item.Value + "&";
110             }
111             argStr = argStr.TrimEnd('&');
112             url = url + argStr;
113             return DoGet(url);
114         }
115 
116         /// <summary>
117         /// HttpClient Get 提交
118         /// </summary>
119         /// <param name="url"></param>
120         /// <param name="arg"></param>
121         /// <param name="headerDic"></param>
122         /// <returns></returns>
123         public static string DoGet(string url, IDictionary<string, string> arg, IDictionary<string, string> headerDic)
124         {
125             try
126             {
127                 if (arg != null && arg.Count > 0)
128                 {
129                     string argStr = "?";
130                     foreach (var item in arg)
131                     {
132                         argStr += item.Key + "=" + item.Value + "&";
133                     }
134                     argStr = argStr.TrimEnd('&');
135                     url = url + argStr;
136                 }
137 
138                 if (headerDic != null)
139                 {
140                     foreach (var item in headerDic)
141                     {
142                         http.DefaultRequestHeaders.Add(item.Key, item.Value);
143                     }
144                 }
145                 //await异步等待回应
146                 var response = http.GetStringAsync(url).Result;
147                 return response;
148 
149             }
150             catch (Exception ex)
151             {
152                 throw ex;
153             }
154         }
155 
156         private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
157         {
158             return true; //总是接受  
159         } 
160     }
161 }
View Code
public class HttpContentTypes
    {
        public enum HttpContentTypeEnum
        {
            JSON,
            FORM
        }

        public static string GetContentType(HttpContentTypeEnum type)
        {
            string typeStr = "";
            switch (type)
            {
                case HttpContentTypeEnum.JSON:
                    typeStr = "application/json";
                    break;
                case HttpContentTypeEnum.FORM:
                    typeStr = "application/x-www-form-urlencoded";
                    break;
            }
            return typeStr;
        }

    }
View Code

注意HttpClient的使用,推荐HttpWebRequest。

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