用HttpListener 建立web服务器 实现网页浏览、文件上传

using AutoPrintApp.Utility;using System;using System.Collections.Generic;using System.IO;using System.Net;using System.Text;using System.Threading;using System.Windows.Forms;namespace AutoPrintApp.BLL{    public class HttpServerBLL    {        #region         public string Host { get; set; }        public string port { get; set; }        private string _webHomeDir = Application.StartupPath + "\\Web";        private HttpListener listener;        private Thread listenThread;        private string directorySeparatorChar = Path.DirectorySeparatorChar.ToString();        public string ImageUploadPath { get; set; }                   /// <summary>          /// 设置监听端口，重启服务生效          /// </summary>          //public string Port          //{          //    get { return this.port; }          //    set          //    {          //        int p;          //        if (string.IsNullOrEmpty(value) || !int.TryParse(value, out p))          //        {          //            throw new Exception("给http监听器赋值的端口号无效！");          //        }          //        this.port = value;          //    }          //}          /// <summary>          /// http服务根目录          /// </summary>          public string WebHomeDir        {            get { return this._webHomeDir; }            set            {                if (!Directory.Exists(value))                    throw new Exception("http服务器设置的根目录不存在!");                this._webHomeDir = value;            }        }        /// <summary>          /// 服务器是否在运行          /// </summary>          public bool IsRunning        {            get { return (listener == null) ? false : listener.IsListening; }        }        #endregion        #region        public HttpServerBLL(string host,string port, string webHomeDir, string imageUploadPath)        {            this.Host = host;            this.port = port;            this._webHomeDir = webHomeDir;            ImageUploadPath = imageUploadPath;            listener = new HttpListener();        }        public bool AddPrefixes(string uriPrefix)        {            string uri = "http://" + uriPrefix + ":" +this.port+"/";            if (listener.Prefixes.Contains(uri)) return false;            listener.Prefixes.Add(uri);            return true;        }        /// <summary>          /// 启动服务          /// </summary>          public void Start()        {            if (listener.IsListening)                return;                       if (!string.IsNullOrEmpty(Host) && Host.Length>0)                listener.Prefixes.Add("http://" + Host + ":" + this.port + "/");            else if (listener.Prefixes==null || listener.Prefixes.Count==0)                listener.Prefixes.Add("http://localhost:" + this.port + "/");            listener.Start();            listenThread = new Thread(AcceptClient);            listenThread.Name = "httpserver";            listenThread.Start();        }        /// <summary>          /// 停止服务          /// </summary>          public void Stop()        {            try            {                if (listener != null)                {                    //listener.Close();                    //listener.Abort();                    listener.Stop();                                    }            }            catch (Exception ex)            {                LogHelper.WriteLog(typeof(HttpServerBLL), ex);            }        }        /// <summary>          /// /接受客户端请求          /// </summary>          void AcceptClient()        {            //int maxThreadNum, portThreadNum;            ////线程池            //int minThreadNum;            //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);            while (listener.IsListening)            {                try                {                    HttpListenerContext context = listener.GetContext();                    //new Thread(HandleRequest).Start(context);                    ThreadPool.QueueUserWorkItem(new WaitCallback(HandleRequest), context);                }                catch                {                                    }            }        }         #endregion        #region HandleRequest        //处理客户端请求          private void HandleRequest(object ctx)        {            HttpListenerContext context = ctx as HttpListenerContext;            HttpListenerResponse response = context.Response;            HttpListenerRequest request = context.Request;            try            {                                string rawUrl = System.Web.HttpUtility.UrlDecode(request.RawUrl);                int paramStartIndex = rawUrl.IndexOf('?');                if (paramStartIndex > 0)                    rawUrl = rawUrl.Substring(0, paramStartIndex);                else if (paramStartIndex == 0)                    rawUrl = "";                if (string.Compare(rawUrl, "/ImageUpload", true) == 0)                {                    #region 上传图片                    string fileName = context.Request.QueryString["name"];                    string filePath = ImageUploadPath + "\\" + DateTime.Now.ToString("yyMMdd_HHmmss_ffff")                        + Path.GetExtension(fileName).ToLower();                    using (var stream = request.InputStream)                    {                        using (var br = new BinaryReader(stream))                        {                            WriteStreamToFile(br, filePath, request.ContentLength64);                        }                    }                    response.ContentType = "text/html;charset=utf-8";                    using (StreamWriter writer = new StreamWriter(response.OutputStream, Encoding.UTF8))                    {                        writer.WriteLine("接收完成！");                    }                    #endregion                }                else                {                    #region 网页请求                    string InputStream = "";                    using (var streamReader = new StreamReader(request.InputStream))                    {                        InputStream = streamReader.ReadToEnd();                    }                    string filePath = "";                    if (string.IsNullOrEmpty(rawUrl) || rawUrl.Length == 0 || rawUrl == "/")                        filePath = WebHomeDir + directorySeparatorChar + "Index.html";                    else                        filePath = WebHomeDir + rawUrl.Replace("/", directorySeparatorChar);                    if (!File.Exists(filePath))                    {                        response.ContentLength64 = 0;                        response.StatusCode = 404;                        response.Abort();                    }                    else                    {                        response.StatusCode = 200;                        string exeName = Path.GetExtension(filePath);                        response.ContentType = GetContentType(exeName);                        FileStream fileStream = new System.IO.FileStream(filePath, System.IO.FileMode.Open, System.IO.FileAccess.Read, FileShare.ReadWrite);                        int byteLength = (int)fileStream.Length;                        byte[] fileBytes = new byte[byteLength];                        fileStream.Read(fileBytes, 0, byteLength);                        fileStream.Close();                        fileStream.Dispose();                        response.ContentLength64 = byteLength;                        response.OutputStream.Write(fileBytes, 0, byteLength);                        response.OutputStream.Close();                    }                    #endregion                }                           }            catch(Exception ex)            {                LogHelper.WriteLog(typeof(HttpServerBLL), ex);                response.StatusCode = 200;                response.ContentType = "text/plain";                using (StreamWriter writer = new StreamWriter(response.OutputStream, Encoding.UTF8))                {                    writer.WriteLine("接收完成！");                }            }            try            {                response.Close();            }            catch (Exception ex)            {                LogHelper.WriteLog(typeof(HttpServerBLL), ex);            }        }         #endregion        #region GetContentType        /// <summary>          /// 获取文件对应MIME类型          /// </summary>          /// <param name="fileExtention">文件扩展名,如.jpg</param>          /// <returns></returns>          protected string GetContentType(string fileExtention)        {            if (string.Compare(fileExtention, ".html", true) == 0                        || string.Compare(fileExtention, ".htm", true) == 0)                return "text/html;charset=utf-8";            else if (string.Compare(fileExtention, ".js", true) == 0)                return "application/javascript";            else if (string.Compare(fileExtention, ".css", true) == 0)                return "application/javascript";            else if (string.Compare(fileExtention, ".png", true) == 0)                return "image/png";            else if (string.Compare(fileExtention, ".jpg", true) == 0 || string.Compare(fileExtention, ".jpeg", true) == 0)                return "image/jpeg";            else if (string.Compare(fileExtention, ".gif", true) == 0)                return "image/gif";            else if (string.Compare(fileExtention, ".swf", true) == 0)                return "application/x-shockwave-flash";            else                return "";//application/octet-stream        }        #endregion        #region WriteStreamToFile        //const int ChunkSize = 1024 * 1024;        private void WriteStreamToFile(BinaryReader br, string fileName, long length)        {            byte[] fileContents = new byte[] { };            var bytes = new byte[length];            int i = 0;            while ((i = br.Read(bytes, 0, (int)length)) != 0)            {                byte[] arr = new byte[fileContents.LongLength + i];                fileContents.CopyTo(arr, 0);                Array.Copy(bytes, 0, arr, fileContents.Length, i);                fileContents = arr;            }            using (var fs = new FileStream(fileName, FileMode.Create))            {                using (var bw = new BinaryWriter(fs))                {                    bw.Write(fileContents);                }            }        }        #endregion    }}