以下是个人在项目开发过程中，总结的Http请求工具类，主要包括四种：
1.处理http POST请求【XML格式、无解压】；
2.处理http GET请求【XML格式、无解压】；
3.处理http POST请求【可以解压】；
4.处理http GET请求【可以解压】。
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 System.Threading.Tasks;
11
12 namespace Common
13 {
14 public class HttpService
15 {
16 public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
17 {
18 //直接确认，否则打不开
19 return true;
20 }
21
22 #region 1.处理http POST请求【XML格式、无解压】
23 /// <summary>
24 /// 处理http POST请求【XML格式、无解压】
25 /// </summary>
26 /// <param name="xml">请求参数</param>
27 /// <param name="url">请求接口地址</param>
28 /// <param name="timeout">设置超时时间</param>
29 /// <returns>http POST成功后返回的数据，失败抛WebException异常</returns>
30 public static string PostXMLRequest(string xml, string url, int timeout = 16)
31 {
32 System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接
33
34 string result = "";//返回结果
35
36 HttpWebRequest request = null;
37 HttpWebResponse response = null;
38 Stream reqStream = null;
39
40 try
41 {
42 //设置最大连接数
43 ServicePointManager.DefaultConnectionLimit = 200;
44 //设置https验证方式
45 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
46 {
47 ServicePointManager.ServerCertificateValidationCallback =
48 new RemoteCertificateValidationCallback(CheckValidationResult);
49 }
50
51 /***************************************************************
52 * 下面设置HttpWebRequest的相关属性
53 * ************************************************************/
54 request = (HttpWebRequest)WebRequest.Create(url);
55
56 request.Method = "POST";
57 request.Timeout = timeout * 1000;
58
59 //设置POST的数据类型和长度
60 request.ContentType = "text/xml";
61 byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
62 request.ContentLength = data.Length;
63
64 //往服务器写入数据
65 reqStream = request.GetRequestStream();
66 reqStream.Write(data, 0, data.Length);
67 reqStream.Close();
68
69 //获取服务端返回
70 response = (HttpWebResponse)request.GetResponse();
71
72 //获取服务端返回数据
73 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
74 result = sr.ReadToEnd().Trim();
75 sr.Close();
76 }
77 catch (System.Threading.ThreadAbortException e)
78 {
79 System.Threading.Thread.ResetAbort();
80 }
81 catch (WebException e)
82 {
83
84
85 }
86 catch (Exception e)
87 {
88
89 }
90 finally
91 {
92 //关闭连接和流
93 if (response != null)
94 {
95 response.Close();
96 }
97 if (request != null)
98 {
99 request.Abort();
100 }
101 }
102 return result;
103 }
104 #endregion
105
106 #region 2.处理http GET请求【XML格式、无解压】
107 /// <summary>
108 /// 处理http GET请求【XML格式、无解压】
109 /// </summary>
110 /// <param name="url">请求的url地址</param>
111 /// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
112 public static string GetXMLRequest(string url)
113 {
114 System.GC.Collect();
115 string result = "";
116
117 HttpWebRequest request = null;
118 HttpWebResponse response = null;
119
120 //请求url以获取数据
121 try
122 {
123 //设置最大连接数
124 ServicePointManager.DefaultConnectionLimit = 200;
125 //设置https验证方式
126 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
127 {
128 ServicePointManager.ServerCertificateValidationCallback =
129 new RemoteCertificateValidationCallback(CheckValidationResult);
130 }
131
132 /***************************************************************
133 * 下面设置HttpWebRequest的相关属性
134 * ************************************************************/
135 request = (HttpWebRequest)WebRequest.Create(url);
136
137 request.Method = "GET";
138
139 //获取服务器返回
140 response = (HttpWebResponse)request.GetResponse();
141
142 //获取HTTP返回数据
143 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
144 result = sr.ReadToEnd().Trim();
145 sr.Close();
146 }
147 catch (System.Threading.ThreadAbortException e)
148 {
149
150 System.Threading.Thread.ResetAbort();
151 }
152 catch (WebException e)
153 {
154
155
156 }
157
158 finally
159 {
160 //关闭连接和流
161 if (response != null)
162 {
163 response.Close();
164 }
165 if (request != null)
166 {
167 request.Abort();
168 }
169 }
170 return result;
171 }
172 #endregion
173
174 #region 3.处理http POST请求【可以解压】
175 /// <summary>
176 /// 处理http POST请求【可以解压】
177 /// </summary>
178 /// <param name="param">请求参数</param>
179 /// <param name="url">请求接口地址</param>
180 /// <param name="timeout">设置超时时间</param>
181 /// <returns>http POST成功后返回的数据，失败抛WebException异常</returns>
182 public static string Post(string param, string url, int timeout = 16)
183 {
184 System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接
185
186 string result = "";//返回结果
187
188 HttpWebRequest request = null;
189 HttpWebResponse response = null;
190 Stream reqStream = null;
191 StreamReader sr = null;
192 try
193 {
194 //设置最大连接数
195 ServicePointManager.DefaultConnectionLimit = 200;
196
197 /***************************************************************
198 * 下面设置HttpWebRequest的相关属性
199 * ************************************************************/
200 request = (HttpWebRequest)WebRequest.Create(url);
201
202 request.Method = "POST";
203 request.Timeout = timeout * 1000;
204
205 //设置POST的数据类型
206 request.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
207
208 byte[] data = System.Text.Encoding.UTF8.GetBytes(param);
209
210 request.UserAgent = "Mozilla/4.0";
211 request.Headers.Add("Accept-Encoding", "gzip, deflate");
212
213 //设置POST的数据长度
214 request.ContentLength = data.Length;
215
216 //往服务器写入数据
217 reqStream = request.GetRequestStream();
218 reqStream.Write(data, 0, data.Length);
219 reqStream.Close();
220
221 //获取服务端返回
222 response = (HttpWebResponse)request.GetResponse();
223
224 //获取服务端返回数据
225 if (response.ContentEncoding.ToLower() == "gzip")//如果使用了GZip则先解压
226 {
227 using (Stream streamReceive = response.GetResponseStream())
228 {
229 using (var zipStream = new GZipStream(streamReceive, CompressionMode.Decompress))
230 {
231 using (sr = new StreamReader(zipStream, Encoding.UTF8))
232 {
233 result = sr.ReadToEnd();
234 }
235 }
236 }
237 }
238 else
239 {
240 using (Stream streamReceive = response.GetResponseStream())
241 {
242 using (sr = new StreamReader(streamReceive, Encoding.UTF8))
243 {
244 result = sr.ReadToEnd();
245 }
246 }
247 }
248
249 sr.Close();
250 }
251 catch (System.Threading.ThreadAbortException e)
252 {
253
254 System.Threading.Thread.ResetAbort();
255 }
256 catch (WebException e)
257 {
258
259 }
260 catch (Exception e)
261 {
262
263 }
264 finally
265 {
266 //关闭连接和流
267 if (response != null)
268 {
269 response.Close();
270 }
271 if (request != null)
272 {
273 request.Abort();
274 }
275 }
276 return result;
277 }
278 #endregion
279
280 #region 4.处理http GET请求【可以解压】
281 /// <summary>
282 /// 处理http GET请求【可以解压】
283 /// </summary>
284 /// <param name="url">请求的url地址</param>
285 /// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
286 public static string Get(string url)
287 {
288 System.GC.Collect();
289 string result = "";
290
291 HttpWebRequest request = null;
292 HttpWebResponse response = null;
293 StreamReader sr = null;
294
295 //请求url以获取数据
296 try
297 {
298 //设置最大连接数
299 ServicePointManager.DefaultConnectionLimit = 200;
300
301 /***************************************************************
302 * 下面设置HttpWebRequest的相关属性
303 * ************************************************************/
304 request = (HttpWebRequest)WebRequest.Create(url);
305
306 request.Method = "GET";
307
308 //获取服务器返回
309 response = (HttpWebResponse)request.GetResponse();
310
311 //获取HTTP返回数据
312 //获取服务端返回数据
313 if (response.ContentEncoding.ToLower() == "gzip")//如果使用了GZip则先解压
314 {
315 using (Stream streamReceive = response.GetResponseStream())
316 {
317 using (var zipStream =
318 new GZipStream(streamReceive, CompressionMode.Decompress))
319 {
320 using (sr = new StreamReader(zipStream, Encoding.UTF8))
321 {
322 result = sr.ReadToEnd();
323 }
324 }
325 }
326 }
327 else
328 {
329 using (Stream streamReceive = response.GetResponseStream())
330 {
331 using (sr = new StreamReader(streamReceive, Encoding.UTF8))
332 {
333 result = sr.ReadToEnd();
334 }
335 }
336 }
337 sr.Close();
338 }
339 catch (System.Threading.ThreadAbortException e)
340 {
341
342 System.Threading.Thread.ResetAbort();
343 }
344 catch (WebException e)
345 {
346
347 if (e.Status == WebExceptionStatus.ProtocolError)
348 {
349
350 }
351
352 }
353 catch (Exception e)
354 {
355
356 }
357 finally
358 {
359 //关闭连接和流
360 if (response != null)
361 {
362 response.Close();
363 }
364 if (request != null)
365 {
366 request.Abort();
367 }
368 }
369 return result;
370 }
371 #endregion
372 }
373 }
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