class Program{static void Main(string[] args){HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://www.baidu.com");    //创建一个请求示例HttpWebResponse response  = (HttpWebResponse)request.GetResponse();　　//获取响应，即发送请求Stream responseStream = response.GetResponseStream();StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);string html = streamReader.ReadToEnd();Console.WriteLine(html);Console.ReadKey();}}

namespace ConsoleApplication1
{class Program{static void Main(string[] args){HttpHeader header = new HttpHeader();header.accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-silverlight-2-b1, */*";header.contentType = "application/x-www-form-urlencoded";header.method = "POST";header.userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";header.maxTry = 300;//在这里自己拼接一下Cookie，不用复制过来的那个GetCookie方法了，原来的那个写法还是比较严谨的CookieContainer cc = new CookieContainer();Cookie cUserName = new Cookie("cSpaceUserEmail", "742783833%40qq.com");cUserName.Domain = ".7soyo.com";Cookie cUserPassword = new Cookie("cSpaceUserPassWord", "4f270b36a4d3e5ee70b65b1778e8f793");cUserPassword.Domain = ".7soyo.com";cc.Add(cUserName);cc.Add(cUserPassword);string html = HTMLHelper.GetHtml("http://user.7soyo.com/CollectUser/List", cc, header);FileStream fs = new FileStream(@"D:\123.txt",FileMode.CreateNew,FileAccess.ReadWrite);fs.Write(Encoding.UTF8.GetBytes(html),0,html.Length);fs.Flush();fs.Dispose();Console.WriteLine(html);Console.ReadKey();}}public class HTMLHelper{/// <summary>/// 获取CooKie/// </summary>/// <param name="loginUrl"></param>/// <param name="postdata"></param>/// <param name="header"></param>/// <returns></returns>public static CookieContainer GetCooKie(string loginUrl, string postdata, HttpHeader header){HttpWebRequest request = null;HttpWebResponse response = null;try{CookieContainer cc = new CookieContainer();request = (HttpWebRequest)WebRequest.Create(loginUrl);request.Method = header.method;request.ContentType = header.contentType;byte[] postdatabyte = Encoding.UTF8.GetBytes(postdata);     //提交的请求主体的内容request.ContentLength = postdatabyte.Length;    //提交的请求主体的长度request.AllowAutoRedirect = false;request.CookieContainer = cc;request.KeepAlive = true;//提交请求
                Stream stream;stream = request.GetRequestStream();stream.Write(postdatabyte, 0, postdatabyte.Length);     //带上请求主体
                stream.Close();//接收响应response = (HttpWebResponse)request.GetResponse();      //正式发起请求response.Cookies = request.CookieContainer.GetCookies(request.RequestUri);CookieCollection cook = response.Cookies;//Cookie字符串格式string strcrook = request.CookieContainer.GetCookieHeader(request.RequestUri);return cc;}catch (Exception ex){throw ex;}}/// <summary>/// 获取html/// </summary>/// <param name="getUrl"></param>/// <param name="cookieContainer"></param>/// <param name="header"></param>/// <returns></returns>public static string GetHtml(string getUrl, CookieContainer cookieContainer, HttpHeader header){Thread.Sleep(1000);HttpWebRequest httpWebRequest = null;HttpWebResponse httpWebResponse = null;try{httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(getUrl);httpWebRequest.CookieContainer = cookieContainer;httpWebRequest.ContentType = header.contentType;httpWebRequest.ServicePoint.ConnectionLimit = header.maxTry;httpWebRequest.Referer = getUrl;httpWebRequest.Accept = header.accept;httpWebRequest.UserAgent = header.userAgent;httpWebRequest.Method = "GET";httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();Stream responseStream = httpWebResponse.GetResponseStream();StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);string html = streamReader.ReadToEnd();streamReader.Close();responseStream.Close();httpWebRequest.Abort();httpWebResponse.Close();return html;}catch (Exception e){if (httpWebRequest != null) httpWebRequest.Abort();if (httpWebResponse != null) httpWebResponse.Close();return string.Empty;}}}public class HttpHeader{public string contentType { get; set; }public string accept { get; set; }public string userAgent { get; set; }public string method { get; set; }public int maxTry { get; set; }}
}

[HttpPost]
public ActionResult Index(string userName,string userPassword)
{string str = "你提交过来的用户名是:" + userName + ",密码是: " + userPassword;Response.Write(str);return View();
}

static void Main(string[] args){HttpWebRequest request = null;HttpWebResponse response = null;CookieContainer cc = new CookieContainer();request = (HttpWebRequest)WebRequest.Create("http://localhost:2539/");request.Method = "POST";request.ContentType = "application/x-www-form-urlencoded";request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; rv:19.0) Gecko/20100101 Firefox/19.0";string requestForm = "userName=1693372175&userPassword=123456";     //拼接Form表单里的信息byte[] postdatabyte = Encoding.UTF8.GetBytes(requestForm);request.ContentLength = postdatabyte.Length;request.AllowAutoRedirect = false;request.CookieContainer = cc;request.KeepAlive = true;Stream stream;stream = request.GetRequestStream();stream.Write(postdatabyte, 0, postdatabyte.Length); //设置请求主体的内容
            stream.Close();//接收响应response = (HttpWebResponse)request.GetResponse();Console.WriteLine();Stream stream1 = response.GetResponseStream();StreamReader sr = new StreamReader(stream1);Console.WriteLine(sr.ReadToEnd());Console.ReadKey();}

class Program{/** * 如果要在客户端向服务器上传文件，我们就必须模拟一个POST multipart/form-data类型的请求 * Content-Type必须是multipart/form-data。 * 以multipart/form-data编码的POST请求格式与application/x-www-form-urlencoded完全不同 * multipart/form-data需要首先在HTTP请求头设置一个分隔符,例如7d4a6d158c9： * 我们模拟的提交要设定 content-type不同于非含附件的post时候的content-type * 这里需要： ("Content-Type", "multipart/form-data; boundary=ABCD"); * 然后，将每个字段用“--7d4a6d158c9”分隔，最后一个“--7d4a6d158c9--”表示结束。 * 例如，要上传一个title字段"Today"和一个文件C:\1.txt，HTTP正文如下： *  * --7d4a6d158c9 * Content-Disposition: form-data; name="title" * \r\n\r\n * Today * --7d4a6d158c9 * Content-Disposition: form-data; name="1.txt"; filename="C:\1.txt" * Content-Type: text/plain * 如果是图片Content-Type: application/octet-stream * \r\n\r\n * <这里是1.txt文件的内容> * --7d4a6d158c9 * \r\n * 请注意，每一行都必须以\r\n结束value前面必须有2个\r\n，包括最后一行。 */static void Main(string[] args){string boundary = "----------" + DateTime.Now.Ticks.ToString("x");//元素分割标记 StringBuilder sb = new StringBuilder();sb.Append("--" + boundary);sb.Append("\r\n");sb.Append("Content-Disposition: form-data; name=\"file1\"; filename=\"D:\\upload.xml" + "\"");sb.Append("\r\n");sb.Append("Content-Type: application/octet-stream");sb.Append("\r\n");sb.Append("\r\n");//value前面必须有2个换行
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:9170/upload/test");request.ContentType = "multipart/form-data; boundary=" + boundary;//其他地方的boundary要比这里多--  request.Method = "POST";FileStream fileStream = new FileStream(@"D:\123.xml", FileMode.OpenOrCreate, FileAccess.Read);byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sb.ToString());byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");//http请求总长度  request.ContentLength = postHeaderBytes.Length + fileStream.Length + boundaryBytes.Length;Stream requestStream = request.GetRequestStream(); requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);byte[] buffer = new Byte[checked((uint)Math.Min(4096, (int)fileStream.Length))];int bytesRead = 0;while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0){requestStream.Write(buffer, 0, bytesRead);}fileStream.Dispose();requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);WebResponse webResponse2 = request.GetResponse();Stream htmlStream = webResponse2.GetResponseStream();string HTML = GetHtml(htmlStream, "UTF-8");Console.WriteLine(HTML);htmlStream.Dispose();}}

public ActionResult Test(){HttpRequest request = System.Web.HttpContext.Current.Request;HttpFileCollection FileCollect = request.Files;if (FileCollect.Count > 0)          //如果集合的数量大于0
            {foreach (string str in FileCollect){HttpPostedFile FileSave = FileCollect[str];  //用key获取单个文件对象HttpPostedFilestring imgName = DateTime.Now.ToString("yyyyMMddhhmmss");string AbsolutePath = FileSave.FileName;FileSave.SaveAs(AbsolutePath);              //将上传的东西保存
                }}return Content("键值对数目：" + FileCollect.Count);}