ASP.NET HTTP模拟提交通用类 GET POST

 用法:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
WebRequestSugar ws = new WebRequestSugar();
         //可选参数
         //ws.SetAccept
         //ws.SetContentType
         //ws.SetCookie
         //ws.SetTimeOut
         //ws.SetIsAllowAutoRedirect
 
         //GET
         var html= ws.HttpGet("http://localhost:24587/Http/HttpTest.aspx");
 
         //带参GET
         var paras=new Dictionary<string, string>() ;
         paras.Add("name","skx");
         paras.Add("id", "100");
         var html2 = ws.HttpGet("http://localhost:24587/Http/HttpTest.aspx",paras );
 
         //POST
         var postHtml= ws.HttpPost("http://localhost:24587/Http/HttpTest.aspx", paras);
 
         //post and file
         var postHtml2 = ws.HttpUploadFile("http://localhost:24587/Http/HttpTest.aspx", "文件地址可以是数组", paras);

  

 

类:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;
using System.Security.Cryptography.X509Certificates;
using System.Net.Security;
using System.Collections.Specialized;
 
namespace SyntacticSugar
{
 
    /// <summary>
    /// ** 描述:模拟HTTP POST GET请求并获取数据
    /// ** 创始时间:2015-11-24
    /// ** 修改时间:-
    /// ** 作者:sunkaixuan
    /// ** 使用说明:
    /// </summary>
    public class WebRequestSugar
    {
        /// <summary>
        /// 设置cookie
        /// </summary>
        private CookieContainer cookie;
 
        /// <summary>
        /// 是否允许重定向
        /// </summary>
        private bool allowAutoRedirect = true;
 
        /// <summary>
        /// contentType
        /// </summary>
        private string contentType = "application/x-www-form-urlencoded";
 
        /// <summary>
        /// accept
        /// </summary>
        private string accept = "*/*";
 
        /// <summary>
        /// 过期时间
        /// </summary>
        private int time = 5000;
 
        /// <summary>
        /// 设置请求过期时间(单位:毫秒)(默认:5000)
        /// </summary>
        /// <param name="time"></param>
        public void SetTimeOut(int time)
        {
            this.time = time;
        }
 
        /// <summary>
        /// 设置accept(默认:*/*)
        /// </summary>
        /// <param name="accept"></param>
        public void SetAccept(string accept)
        {
            this.accept = accept;
        }
 
        /// <summary>
        /// 设置contentType(默认:application/x-www-form-urlencoded)
        /// </summary>
        /// <param name="contentType"></param>
        public void SetContentType(string contentType)
        {
            this.contentType = contentType;
        }
 
        /// <summary>
        /// 设置Cookie
        /// </summary>
        /// <param name="cookie"></param>
        public void SetCookie(CookieContainer cookie)
        {
            this.cookie = cookie;
        }
        /// <summary>
        /// 是否允许重定向(默认:true)
        /// </summary>
        /// <param name="allowAutoRedirect"></param>
        public void SetIsAllowAutoRedirect(bool allowAutoRedirect)
        {
            this.allowAutoRedirect = allowAutoRedirect;
        }
 
        /// <summary>
        /// post请求返回html
        /// </summary>
        /// <param name="url"></param>
        /// <param name="postDataStr"></param>
        /// <returns></returns>
        public string HttpPost(string url, Dictionary<string, string> postdata)
        {
            string postDataStr = null;
            if (postdata != null && postdata.Count > 0)
            {
                postDataStr = string.Join("&", postdata.Select(it => it.Key + "=" + it.Value));
            }
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.AllowAutoRedirect = allowAutoRedirect;
            request.Method = "POST";
            request.Accept = accept;
            request.ContentType = this.contentType;
            request.Timeout = time;
            request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
            if (cookie != null)
                request.CookieContainer = cookie; //cookie信息由CookieContainer自行维护
            Stream myRequestStream = request.GetRequestStream();
            StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
            myStreamWriter.Write(postDataStr);
            myStreamWriter.Close();
            HttpWebResponse response = null;
            try
            {
                this.SetCertificatePolicy();
                response = (HttpWebResponse)request.GetResponse();
            }
            catch (System.Exception ex)
            {
                throw ex;
            }
            //获取重定向地址
            //string url1 = response.Headers["Location"];
            if (response != null)
            {
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();
                return retString;
            }
            else
            {
                return null; //post请求返回为空
            }
        }
        /// <summary>
        /// get请求获取返回的html
        /// </summary>
        /// <param name="url">无参URL</param>
        /// <param name="querydata">参数</param>
        /// <returns></returns>
        public string HttpGet(string url, Dictionary<string, string> querydata)
        {
            if (querydata != null && querydata.Count > 0)
            {
                url += "?" + string.Join("&", querydata.Select(it => it.Key + "=" + it.Value));
            }
 
            return HttpGet(url);
        }
        /// <summary>
        /// get请求获取返回的html
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public string HttpGet(string url)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "GET";
            request.ContentType = "text/html;charset=UTF-8";
            request.CookieContainer = cookie;
            request.Accept = this.accept;
            request.Timeout = time;
            this.SetCertificatePolicy();
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            // response.Cookies = cookie.GetCookies(response.ResponseUri);
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
            string retString = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();
            return retString;
        }
 
        /// <summary>
        /// POST文件
        /// </summary>
        /// <param name="url"></param>
        /// <param name="file">文件路径</param>
        /// <param name="postdata"></param>
        /// <returns></returns>
        public string HttpUploadFile(string url, string file, Dictionary<string, string> postdata)
        {
            return HttpUploadFile(url, file, postdata, Encoding.UTF8);
        }
        /// <summary>
        /// POST文件
        /// </summary>
        /// <param name="url"></param>
        /// <param name="file">文件路径</param>
        /// <param name="postdata">参数</param>
        /// <param name="encoding"></param>
        /// <returns></returns>
        public string HttpUploadFile(string url, string file, Dictionary<string, string> postdata, Encoding encoding)
        {
            return HttpUploadFile(url, new string[] { file }, postdata, encoding);
        }
        /// <summary>
        /// POST文件
        /// </summary>
        /// <param name="url"></param>
        /// <param name="files">文件路径</param>
        /// <param name="postdata">参数</param>
        /// <returns></returns>
        public string HttpUploadFile(string url, string[] files, Dictionary<string, string> postdata)
        {
            return HttpUploadFile(url, files, postdata, Encoding.UTF8);
        }
        /// <summary>
        /// POST文件
        /// </summary>
        /// <param name="url"></param>
        /// <param name="files">文件路径</param>
        /// <param name="postdata">参数</param>
        /// <param name="encoding"></param>
        /// <returns></returns>
        public  string HttpUploadFile(string url, string[] files, Dictionary<string, string> postdata, Encoding encoding)
        {
            string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
            byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endbytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
 
            //1.HttpWebRequest
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.ContentType = "multipart/form-data; boundary=" + boundary;
            request.Method = "POST";
            request.KeepAlive = true;
            request.Accept = this.accept;
            request.Timeout = this.time;
            request.AllowAutoRedirect = this.allowAutoRedirect;
            if (cookie != null)
                request.CookieContainer = cookie;
            request.Credentials = CredentialCache.DefaultCredentials;
 
            using (Stream stream = request.GetRequestStream())
            {
                //1.1 key/value
                string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
                if (postdata != null)
                {
                    foreach (string key in postdata.Keys)
                    {
                        stream.Write(boundarybytes, 0, boundarybytes.Length);
                        string formitem = string.Format(formdataTemplate, key, postdata[key]);
                        byte[] formitembytes = encoding.GetBytes(formitem);
                        stream.Write(formitembytes, 0, formitembytes.Length);
                    }
                }
 
                //1.2 file
                string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: application/octet-stream\r\n\r\n";
                byte[] buffer = new byte[4096];
                int bytesRead = 0;
                for (int i = 0; i < files.Length; i++)
                {
                    stream.Write(boundarybytes, 0, boundarybytes.Length);
                    string header = string.Format(headerTemplate, "file" + i, Path.GetFileName(files[i]));
                    byte[] headerbytes = encoding.GetBytes(header);
                    stream.Write(headerbytes, 0, headerbytes.Length);
                    using (FileStream fileStream = new FileStream(files[i], FileMode.Open, FileAccess.Read))
                    {
                        while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
                        {
                            stream.Write(buffer, 0, bytesRead);
                        }
                    }
                }
 
                //1.3 form end
                stream.Write(endbytes, 0, endbytes.Length);
            }
            //2.WebResponse
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader stream = new StreamReader(response.GetResponseStream()))
            {
                return stream.ReadToEnd();
            }
        }
 
 
 
 
 
        /// <summary>
        /// 获得响应中的图像
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public Stream GetResponseImage(string url)
        {
            Stream resst = null;
            try
            {
                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
                req.KeepAlive = true;
                req.Method = "GET";
                req.AllowAutoRedirect = allowAutoRedirect;
                req.CookieContainer = cookie;
                req.ContentType = this.contentType;
                req.Accept = this.accept;
                req.Timeout = time;
                Encoding myEncoding = Encoding.GetEncoding("UTF-8");
                this.SetCertificatePolicy();
                HttpWebResponse res = (HttpWebResponse)req.GetResponse();
                resst = res.GetResponseStream();
                return resst;
            }
            catch
            {
                return null;
            }
        }
        /// <summary>
        /// 正则获取匹配的第一个值
        /// </summary>
        /// <param name="html"></param>
        /// <param name="pattern"></param>
        /// <returns></returns>
        private string GetStringByRegex(string html, string pattern)
        {
            Regex re = new Regex(pattern, RegexOptions.IgnoreCase);
            MatchCollection matchs = re.Matches(html);
            if (matchs.Count > 0)
            {
                return matchs[0].Groups[1].Value;
            }
            else
                return "";
        }
        /// <summary>
        /// 正则验证返回的response是否正确
        /// </summary>
        /// <param name="html"></param>
        /// <param name="pattern"></param>
        /// <returns></returns>
        private bool VerifyResponseHtml(string html, string pattern)
        {
            Regex re = new Regex(pattern);
            return re.IsMatch(html);
        }
        //注册证书验证回调事件,在请求之前注册
        private void SetCertificatePolicy()
        {
            ServicePointManager.ServerCertificateValidationCallback
                       += RemoteCertificateValidate;
        }
        /// <summary> 
        /// 远程证书验证,固定返回true
        /// </summary> 
        private static bool RemoteCertificateValidate(object sender, X509Certificate cert,
            X509Chain chain, SslPolicyErrors error)
        {
            return true;
        }
    }
}

  

posted @   阿妮亚  阅读(3458)  评论(0编辑  收藏  举报
编辑推荐:
· Linux系列:如何用 C#调用 C方法造成内存泄露
· AI与.NET技术实操系列(二):开始使用ML.NET
· 记一次.NET内存居高不下排查解决与启示
· 探究高空视频全景AR技术的实现原理
· 理解Rust引用及其生命周期标识(上)
阅读排行:
· 阿里最新开源QwQ-32B,效果媲美deepseek-r1满血版,部署成本又又又降低了!
· 单线程的Redis速度为什么快?
· SQL Server 2025 AI相关能力初探
· 展开说说关于C#中ORM框架的用法!
· AI编程工具终极对决:字节Trae VS Cursor,谁才是开发者新宠?
点击右上角即可分享
微信分享提示