简易socket客户端和多线程服务器实现

简易socket客户端和多线程服务器实现

下午时间匆忙写的，尽量简化实现。

客户端：

package com.XiongYi.client;

import java.io.*;
import java.net.*;

public class Client ...{

    public static void main(String[] args)throws IOException ...{

        final String Server_IP = "localhost";
        final int Server_Port = 1986;

        Socket socket=new Socket(Server_IP,Server_Port);
        
        try ...{
            System.out.println("Client Start...");
            System.out.println("socket="+socket);
            socket.setKeepAlive(true);

            PrintWriter out = new PrintWriter(
                    new BufferedWriter
                        (new OutputStreamWriter
                                (socket.getOutputStream())),true);
            InputStream netIn = socket.getInputStream();
            
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(System.in));
            
            System.out.print("请输入请求:");
            String httpString = bufferedReader.readLine();
            
            System.out.println(httpString);
            int stick = httpString.indexOf("//");
            //找到“HTTP://localhost:80/Tomcat/test.html”中“//”的位置
            if(stick!=-1)
                httpString = httpString.substring(stick+2);
            stick = httpString.indexOf("/");
            httpString = httpString.substring(stick);
            System.out.println(httpString);
            
            out.println("GET " + httpString + " HTTP/1.1");            
            out.println("Accept: */*");
            out.println("Accept-Language: zh-cn");
            out.println("UA-CPU: x86");
            out.println("Accept-Encoding: gzip, deflate");
            out.println("User-Agent: R.C.");
            out.println("Host: localhost:"+Server_Port);
            out.println("Connection: Keep-Alive");
            out.flush();
            //这里不能用out.close，否则socket也会被关闭！
            
            System.out.println("Reading the page... ");
            
            byte buf[] = new byte[1024];
            int num = 0;
            
            while(  (num=netIn.read(buf,0,buf.length))!=-1  )...{
                System.out.print(new String(buf,0,num,"GBK"));            
            }
            bufferedReader.close();
            netIn.close();
            out.close();
        }
        finally ...{
                System.out.println("closing..");
                socket.close();
        }
        
    }

}

---

多线程服务端：

package com.XiongYi.server;

import java.io.*;
import java.net.*;

public class Server extends Thread ...{

    int server_Port;

    public Server(int sp) ...{
        server_Port = sp;
    }

    public void run() ...{
        System.out.println("A server thread is running...");
        try ...{
            ServerSocket serverSocket = new ServerSocket(server_Port);
            System.out.println("ServerSocket = " + serverSocket);

            Socket socket = serverSocket.accept();
            System.out.println("Server start...");

            System.out.println("Connection accepted, the socket is " + socket);

            BufferedReader in = new BufferedReader(new InputStreamReader(socket
                    .getInputStream()));

            PrintWriter out = new PrintWriter(new BufferedWriter(
                    new OutputStreamWriter(socket.getOutputStream())), true);

            out.println("Hi, I'm a server...");

            System.out.println("Reading the request...");
            String outS = "The http request:";
            while (outS != null) ...{
                System.out.println(outS = in.readLine());
            }

            out.close();
            in.close();
            socket.close();
            serverSocket.close();
            System.out.println("closing...");
        } catch (IOException e) ...{
            e.printStackTrace();
        }
    }

    public static void main(String[] args)...{
        int i = 0;
        while(i<10)...{
        //最多启用10线程
            new Server(1986+i).run();
        }

    }
}