浅显的发一代码【www.weide1946.com】

2019-05-07 10:10 来源:未知

经常使用控制台来写小玩意,总希望有个进度条,各种百度,终于简单实现:www.weide1946.com 1

接下来发出来的一段代码也是我从网上找的一个例子,具体的来源已经找不到了,跟作者说声抱歉 ,现在公司做机票,出于性能的原因,就重写一个底层的tcp请求(不是我写的www.weide1946.com 2

先上进度条帮助类:

 

 public class ConsoleProgress
    {
        static ConsoleProgress consoleProgress = new ConsoleProgress();
        int top=0;
        int end=0;
        private ConsoleProgress()
        {
            top = Console.CursorTop;
        }
      
         public static ConsoleProgress Intance
        {
            get
            {

下面测试的是个控制台应用程序

                if (consoleProgress == null)
                {
                    lock(new object())
                    {
                        consoleProgress = new ConsoleProgress();
                    }
                }
                return consoleProgress;
            }
        }
        public  void Reset()
        {
            top =Console. CursorTop;
        }
         public void  ShowProgress(int curvalue,string msg)
        {
            if (CursorTop > end && end > 0)
            {
                top = CursorTop;
            }
            Console.SetCursorPosition(100/2-(msg.Length)/2, top);
            //显示提示信息
            Console.WriteLine(msg);
            Console.SetCursorPosition(100 / 2 - ((curvalue.ToString() "%").Length) / 2, top 1);
            Console.WriteLine("{0}%", curvalue);
            Console.SetCursorPosition(CursorLeft, top 2);
            Console.WriteLine("┃");
            Console.SetCursorPosition(CursorLeft 1, top 2);
            Console.WriteLine(new string('*',curvalue));
            if (curvalue >= 100)
            {
                Console.SetCursorPosition(curvalue 1, top 2);
                Console.WriteLine("┃");
                Console.SetCursorPosition(100/2-("操作已完成".Length/2)

HttpServer.cs

using System;
using System.Collections;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;

namespace tcpAndHttp
{
      public class HttpProcessor {
        public TcpClient socket;       
        public HttpServer srv;

        private Stream inputStream;
        public StreamWriter outputStream;

        public String http_method;
        public String http_url;
        public String http_protocol_versionstring;
        public Hashtable httpHeaders = new Hashtable();

        /// <summary>
        /// 最大post数据限制量
        /// </summary>
        private static int MAX_POST_SIZE = 10 * 1024 * 1024; // 10MB

        public HttpProcessor(TcpClient s, HttpServer srv) {
            this.socket = s;
            this.srv = srv;                  
        }
       
        private string streamReadLine(Stream inputStream) {
            int next_char;
            string data = "";
            while (true) {
                next_char = inputStream.ReadByte();
                if (next_char == 'n') { break; }
                if (next_char == 'r') { continue; }
                if (next_char == -1) { Thread.Sleep(1); continue; };
                data = Convert.ToChar(next_char);
            }           
            return data;
        }
        /// <summary>
        /// 开始处理传入的http请求
        /// </summary>
        public void process() {
            //不能用 StreamReader 来接受数据  应为传入的数据不在我们缓冲池里面          
            inputStream = new BufferedStream(socket.GetStream());

            //不应该使用streamwriter所有输出给处理程序
            outputStream = new StreamWriter(new BufferedStream(socket.GetStream()));
            try {
                parseRequest();
                readHeaders();
                if (http_method.Equals("GET")) {
                    handleGETRequest();
                } else if (http_method.Equals("POST")) {
                    handlePOSTRequest();
                }
            } catch (Exception e) {
                Console.WriteLine("异常信息: " e.ToString());
                writeFailure();
            }
            outputStream.Flush();
            inputStream = null; outputStream = null;          
            socket.Close();            
        }

        /// <summary>
        /// 转换request请求
        /// </summary>
        public void parseRequest() {
            String request = streamReadLine(inputStream);
            string[] tokens = request.Split(' ');
            if (tokens.Length != 3) {
                throw new Exception("invalid http request line");
            }
            http_method = tokens[0].ToUpper();
            http_url = tokens[1];
            http_protocol_versionstring = tokens[2];

            Console.WriteLine("starting: " request);
        }

        public void readHeaders() {
            Console.WriteLine("readHeaders()");
            String line;
            while ((line = streamReadLine(inputStream)) != null) {
                if (line.Equals("")) {
                    Console.WriteLine("got headers");
                    return;
                }
               
                int separator = line.IndexOf(':');
                if (separator == -1) {
                    throw new Exception("invalid http header line: " line);
                }
                String name = line.Substring(0, separator);
                int pos = separator 1;
                while ((pos < line.Length) && (line[pos] == ' ')) {
                    pos ; // strip any spaces
                }
                   
                string value = line.Substring(pos, line.Length - pos);
                Console.WriteLine("header: {0}:{1}",name,value);
                httpHeaders[name] = value;
            }
        }

        public void handleGETRequest() {
            srv.handleGETRequest(this);
        }

        private const int BUF_SIZE = 4096;
        public void handlePOSTRequest() {
            // this post data processing just reads everything into a memory stream.
            // this is fine for smallish things, but for large stuff we should really
            // hand an input stream to the request processor. However, the input stream
            // we hand him needs to let him see the "end of the stream" at this content
            // length, because otherwise he won't know when he's seen it all!

            Console.WriteLine("get post data start");
            int content_len = 0;
            MemoryStream ms = new MemoryStream();
            if (this.httpHeaders.ContainsKey("Content-Length")) {
                 content_len = Convert.ToInt32(this.httpHeaders["Content-Length"]);
                 if (content_len > MAX_POST_SIZE) {
                     throw new Exception(
                         String.Format("POST Content-Length({0}) too big for this simple server",
                           content_len));
                 }
                 byte[] buf = new byte[BUF_SIZE];             
                 int to_read = content_len;
                 while (to_read > 0) { 
                     Console.WriteLine("starting Read, to_read={0}",to_read);

                     int numread = this.inputStream.Read(buf, 0, Math.Min(BUF_SIZE, to_read));
                     Console.WriteLine("read finished, numread={0}", numread);
                     if (numread == 0) {
                         if (to_read == 0) {
                             break;
                         } else {
                             throw new Exception("client disconnected during post");
                         }
                     }
                     to_read -= numread;
                     ms.Write(buf, 0, numread);
                 }
                 ms.Seek(0, SeekOrigin.Begin);
            }
            Console.WriteLine("get post data end");
            srv.handlePOSTRequest(this, new StreamReader(ms));

        }

        public void writeSuccess() {
            outputStream.WriteLine("HTTP/1.0 200 OK");           
            outputStream.WriteLine("Content-Type: text/html");
            outputStream.WriteLine("Connection: close");
            outputStream.WriteLine("");
        }

        public void writeFailure() {
            outputStream.WriteLine("HTTP/1.0 404 File not found");
            outputStream.WriteLine("Connection: close");
            outputStream.WriteLine("");
        }
    }

    public abstract class HttpServer {

        protected int port;
        /// <summary>
        ///  listener  是tcplisten  而不是 HttpListener
        /// </summary>
        private TcpListener listener;
        bool is_active = true;
      
        public HttpServer(int port) {
            this.port = port;
        }

        public void listen() {
            //监听本机指定端口号
            listener = new TcpListener(port);

            //监听开启
            listener.Start();
                       
            while (is_active) {
               
                TcpClient s = listener.AcceptTcpClient(); 
                HttpProcessor processor = new HttpProcessor(s, this);

                Thread thread = new Thread(new ThreadStart(processor.process));
                thread.Start();
                Thread.Sleep(1);
            }
        }

        public abstract void handleGETRequest(HttpProcessor p);
        public abstract void handlePOSTRequest(HttpProcessor p, StreamReader inputData);
    }

    public class MyHttpServer : HttpServer {
        public MyHttpServer(int port)
            : base(port) {
        }
        public override void handleGETRequest(HttpProcessor p) {
            Console.WriteLine("request: {0}", p.http_url);
            p.writeSuccess();
            p.outputStream.WriteLine("<html><body><h1>test server</h1>");
            p.outputStream.WriteLine("Current Time: " DateTime.Now.ToString());
            p.outputStream.WriteLine("url : {0}", p.http_url);

            p.outputStream.WriteLine("<form method=post action=/form>");
            p.outputStream.WriteLine("<input type=text name=foo value=foovalue>");
            p.outputStream.WriteLine("<input type=submit name=bar value=barvalue>");
            p.outputStream.WriteLine("</form>");
        }

        public override void handlePOSTRequest(HttpProcessor p, StreamReader inputData) {
            Console.WriteLine("POST request: {0}", p.http_url);
            string data = inputData.ReadToEnd();

            p.outputStream.WriteLine("<html><body><h1>test server</h1>");
            p.outputStream.WriteLine("<a href=/test>return</a><p>");
            p.outputStream.WriteLine("postbody: <pre>{0}</pre>", data);            

        }
    }
}

  • 1, top 3);
                    Console.WriteLine("操作已完成");
                }
               end= Console.CursorTop;
            }

Program.cs

    }

 

2.接下来是调用:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;

namespace tcpAndHttp
{
    class Program
    {
        static void Main(string[] args)
        {
            HttpServer httpServer;
            //先传入监听端口
            if (args.GetLength(0) > 0)
            {
                httpServer = new MyHttpServer(Convert.ToInt16(args[0]));
            }
            else
            {
                httpServer = new MyHttpServer(8080);
            }
            //开启监听事件 listen
            Thread thread = new Thread(new ThreadStart(httpServer.listen));

            thread.Start();

        }
    }
}

Console.WriteLine("开始进度条控制");
          
            for (int i = 0; i < 100;) {
               ConsoleProgress.Intance.ShowProgress(i,  "正则测试");
                Thread.Sleep(50);
            }
           ConsoleProgress.Intance.Reset();//此处用于开启一个新的进度条,如果不调用此句,则需要有Console.WriteLine()方法被调用后方可正常在用showProgress,否则进度控制会保留上一次调用时的位置:
           // Console.WriteLine("再次测试。。。。。。。。。。。");
            for (int i = 0; i < 100;)
            {
               ConsoleProgress.Intance.ShowProgress(i,  "正则测试");
                Thread.Sleep(50);
            }

这两个应该就能很好解释完一些tcp方面基础知识

            Console.ReadLine();

具体的疑问可以邮件我一起讨论讨论

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贴出新方法,减小进度条的大小!

 public void  ShowProgress(int curvalue,string msg)
        {
            int total = 30;
            if (CursorTop > end && end > 0)
            {
                top = CursorTop;
            }
            Console.SetCursorPosition(30 / 2-(msg.Length)/2, top);
            //显示提示信息
            Console.WriteLine(msg);
            Console.SetCursorPosition(30 / 2 - ((curvalue.ToString() "%").Length) / 2, top 1);
            Console.WriteLine("{0}%", curvalue);
            Console.SetCursorPosition(CursorLeft, top 2);
            Console.WriteLine("┃");
            Console.SetCursorPosition(CursorLeft 1, top 2);
            Console.WriteLine(new string('*',curvalue*30/100));
            if (curvalue >= 30)
            {
                Console.SetCursorPosition(curvalue*30/100 1, top 2);
                Console.WriteLine("┃");
                Console.SetCursorPosition(30 / 2-("操作已完成".Length/2)

  • 1, top 3);
                    Console.WriteLine("操作已完成");
                }
               end= Console.CursorTop;
            }

 www.weide1946.com 3

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