【游戏服务端开服 一 】 单线程可以处理一对一的请求

Java 学习多线程程序，一般要经历的几个阶段 

1.单线程可以处理一对一的请求 

 

package rodking.server;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;


/**
 * @author rodking
 * @des 单线程可以处理一对一的请求，当如果有要处理多个客户端连接时不适用
 * (类似一种排队机制)
 * (问答模式,单通道通信) 阻塞通信
 */
public class OneThreadServer {
    private ServerSocket server;
    private Socket socket = null;
    
    public void serverStart()
    {
        BufferedReader is = null;
        PrintWriter os = null;
        try {
            // 启动一个服务端
            server = new ServerSocket(9000);
            System.out.println("[ S ]: game server start port 9000.");
            // 监听一个客户端连接
            socket = server.accept();
            String line;
            // 获取客户端的，读写流
            is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            os = new PrintWriter(socket.getOutputStream());
            line = is.readLine();
            
            System.out.println("[ S ]: one client in server");
            // 单线程处理读取
            while (!line.equals("bye")) {

                System.out.println("Server:" + line);
                System.out.println("Client:" + line);
                
                // TODO 这里可以做协议派发 (封装 os)
                os.println("[ received ] "+ line);
                os.flush();
                
                line = is.readLine();
            }
            
            System.out.println("[ S ]: game server close.");
            
            os.close();
            is.close();
            socket.close();
            server.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        OneThreadServer server = new OneThreadServer();
        server.serverStart();
    }
}