serverthread.java~2~

用java实现的游戏例子(包括俄罗斯方块等),值得借鉴.

package server;

//类serverThread
import java.io.*;
import java.net.*;

class serverThread extends Thread
{
    Socket clientRequest;
    //用户连接的通信套接字
    BufferedReader input;   //输入流
    PrintWriter output;        //输出流

    public serverThread(Socket s)
    {  //serverThread的构造器
        this.clientRequest=s;
         //接收receiveServer传来的套接字
            InputStreamReader reader;
            OutputStreamWriter writer;
            try{        //初始化输入、输出流
              reader=new InputStreamReader
        (clientRequest.getInputStream());
              writer=new OutputStreamWriter
        (clientRequest.getOutputStream());
         input=new BufferedReader(reader);
              output=new PrintWriter(writer,true);
            }catch(IOException e){
              System.out.println(e.getMessage());}
            output.println("Welcome to the server!");
            //客户机连接欢迎词
        output.println("Now is:"+new java.util.Date()+"    "+
             "Port:"+clientRequest.getLocalPort());
            output.println("What can I do for you?");
    }
    public void run()
    {   //线程的执行方法
        String command=null;  //用户指令
        String str=null;
        boolean done=false;

        while(!done)
        {
            try
            {
                str=input.readLine();
                System.out.println(str);     //接收客户机指令
            }
            catch(IOException e)
            {
                System.out.println(e.getMessage());
            }
            command=str.trim().toUpperCase();
            if(str==null || command.equals("QUIT"))
              //命令quit结束本次连接
                done=true;
            else if(command.equals("HELP"))
            {
                 //命令help查询本服务器可接受的命令
                output.println("query");
                output.println("quit");
                output.println("help");
            }
            else if(command.startsWith("QUERY"))
            {   //命令query
                 output.println("OK to query something!");
            }
            //else if ……..    //在此可加入服务器的其他指令
            else if(!command.startsWith("HELP") &&
                              !command.startsWith("QUIT") &&
                                        !command.startsWith("QUERY"))
            {
                output.println("Command not Found!Please refer to the HELP!");
            }
        }
        try
        {
             clientRequest.close();        //关闭套接字
        }
        catch(IOException e)
        {
              System.out.println(e.getMessage());
        }
        command=null;
        //end of run
   }
}