用法：
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：
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; } }}
原标题：ASP.NET HTTP模拟提交通用类 GET POST
关键词：ASP.NET
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