首页 > 代码库 > c# 模拟get请求例子，演示Session会话状态。
c# 模拟get请求例子，演示Session会话状态。
创建一个控制台 程序：
using System;using System.Collections.Generic;using System.IO;using System.IO.Compression;using System.Linq;using System.Net;using System.Net.Sockets;using System.Runtime.Remoting.Messaging;using System.Text;using System.Text.RegularExpressions;using System.Threading;using System.Threading.Tasks;namespace ConsoleApplication1{ class Program { static void Main(string[] args) { string CookieStr = string.Empty; string result = ""; for (int i = 0; i < 10000; i++) { CookieStr = string.Empty; //每次都清除cookie SessionID result = SimulatedGet("http://localhost:1342/%E5%85%A8%E5%B1%80%E5%BA%94%E7%94%A8%E7%A8%8B%E5%BA%8F%E5%8F%98%E9%87%8F%E7%BB%9F%E8%AE%A1%E5%9C%A8%E7%BA%BF%E4%BA%BA%E6%95%B0.aspx", ref CookieStr); result = result.Replace("\r\n", "\r"); string[] html = result.Split(‘\r‘); Console.WriteLine(html[0]); Thread.Sleep(10); } Console.ReadKey(); } private static string SimulatedGet(string Url,ref string CookieStr) { //GET /NewsAdmin/Login.aspx HTTP/1.1 //Host: localhost //User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0 //Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 //Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3 //Accept-Encoding: gzip, deflate //Connection: keep-alive string result = ""; WebClient context = new WebClient(); context.Headers.Add("Host: localhost"); context.Headers.Add("User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0"); context.Headers.Add("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"); context.Headers.Add("Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3"); context.Headers.Add("Content-Type: multipart/form-data"); context.Headers.Add("Accept-Encoding: gzip, deflate"); context.Headers.Add("Cache-Control: no-cache"); //Connection: keep-alive if (!string.IsNullOrEmpty(CookieStr)) { context.Headers.Add(CookieStr); //把cookie添加到请求报文头中。 } context.Encoding = Encoding.UTF8; result = context.DownloadString(Url); if (string.IsNullOrEmpty(CookieStr)) { CookieStr = context.ResponseHeaders["Set-Cookie"].ToString(); CookieStr = GetCookie(CookieStr); } return result; } private static string GetCookie(string CookieStr) { string result = ""; string[] myArray = CookieStr.Split(‘,‘); if (myArray.Count() > 0) { result = "Cookie: "; foreach (var str in myArray) { string[] CookieArray = str.Split(‘;‘); result += CookieArray[0].Trim(); result += "; "; } result = result.Substring(0, result.Length - 2); } return result; } }}
Global.asax Session_Start事件
统计在线人数。
protected void Session_Start(object sender, EventArgs e) { Response.Write(Session.SessionID); Application.Lock(); int num = Application["OnLineUsers"] == null ? 0 : Convert.ToInt32(Application["OnLineUsers"]); num++; Application["OnLineUsers"] = num; Application.UnLock(); }
aspx访问页面后台page_load事件中显示在线人数。
protected void Page_Load(object sender, EventArgs e) { Response.Write("当前在线人数：" + Application["OnLineUsers"].ToString()); }
当cookie中存在sessionID时，保持会话状态。
当每次清空cookie：sessionID时，重新创建新的Session会话。
c# 模拟get请求例子，演示Session会话状态。
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