C# 监听HTTP请求

先把代码放在这里，下面再详细解说： 

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Oracle.DataAccess.Client;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Web;

namespace ConsoleApplication1
{
    class Program
    {
        static Object o = new object();
        static void Main(string[] args)
        {
            HttpListener listerner = new HttpListener();
            while (true)
            {
                try
                {
                    listerner.AuthenticationSchemes = AuthenticationSchemes.Anonymous;//指定身份验证 Anonymous匿名访问
                    listerner.Prefixes.Add("http://127.0.0.1:1500/Service/");
                    listerner.Start();
                }
                catch (Exception ex)
                {
                    Console.WriteLine("服务启动失败...");
                    break;
                }
                Console.WriteLine("服务器启动成功.......");

                //线程池
                int minThreadNum;
                int portThreadNum;
                int maxThreadNum;
                ThreadPool.GetMaxThreads(out maxThreadNum, out portThreadNum);
                ThreadPool.GetMinThreads(out minThreadNum, out portThreadNum);
                Console.WriteLine("最大线程数：{0}", maxThreadNum);
                Console.WriteLine("最小空闲线程数：{0}", minThreadNum);
                //ThreadPool.QueueUserWorkItem(new WaitCallback(TaskProc1), x);

                Console.WriteLine("

等待客户连接中。。。。");
                while (true)
                {
                    //等待请求连接
                    //没有请求则GetContext处于阻塞状态
                    HttpListenerContext ctx = listerner.GetContext();

                    ThreadPool.QueueUserWorkItem(new WaitCallback(TaskProc), ctx);
                }
                //listerner.Stop();
            }

            Console.ReadKey();
        }

        static void TaskProc(object o)
        {
            HttpListenerContext ctx = (HttpListenerContext)o;

            ctx.Response.StatusCode = 200;//设置返回给客服端http状态代码

            //接收Get参数
            string type = ctx.Request.QueryString["type"];
            string userId = ctx.Request.QueryString["userId"];
            string password = ctx.Request.QueryString["password"];
            string filename = Path.GetFileName(ctx.Request.RawUrl);
            string userName = HttpUtility.ParseQueryString(filename).Get("userName");//避免中文乱码
            //进行处理
            Console.WriteLine("收到数据:" + userName);
            
            //接收POST参数
            Stream stream = ctx.Request.InputStream;
            System.IO.StreamReader reader = new System.IO.StreamReader(stream, Encoding.UTF8);
            String body = reader.ReadToEnd();
            Console.WriteLine("收到POST数据:" + HttpUtility.UrlDecode(body));
            Console.WriteLine("解析:" + HttpUtility.ParseQueryString(body).Get("userName"));

            //使用Writer输出http响应代码,UTF8格式
            using (StreamWriter writer = new StreamWriter(ctx.Response.OutputStream,Encoding.UTF8))
            {
                writer.Write("处理结果,Hello world<br/>");
                writer.Write("数据是userId={0},userName={1}", userId, userName);
                writer.Close();
                ctx.Response.Close();
            }
        }

    }

}

1.可通过HttpUtility.UrlDecode对传入的参数进行解码，防止中文乱码

2.StreamWriter必须使用UTF8格式，防止中文乱码

3.微软提供的HttpListener默认不能接收POST参数，所以需要自己去解析，上面已实现

4.界面可通过form的post方式直接提交数据

原文地址：http://blog.sina.com.cn/s/blog_6f3ff2c90101wwh5.html