e084c845e0d5001919beb9595aa95db7

使用TCP和UDP协议

/*
 * Created on 2005-5-31
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package server;

/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import java.net.*;
import java.io.*;
import java.util.*;

class JabberThread extends Thread{
    private int port = 1235;
    ServerGUI serverGUI = null;
    TCPThread tcpThread = null;
    DatagramSocket receiveSocket = null;
    DatagramPacket packetReceived = null;
    Iterator iterSockets = null;
    //为了给Client端发消息 ：
    OutputStream out = null;
    PrintStream datumOut = null;
    byte[] byteReceived = new byte[1024];
//    int receivedSize;
    InetAddress serverAddress;
    JabberThread(ServerGUI serverGUI, TCPThread tcpThread ,int udpPort)
    {
        this.serverGUI = serverGUI;
        this.tcpThread = tcpThread;
        port = udpPort;
        
        try
        {
            serverAddress = InetAddress.getByName(null);
        } catch(UnknownHostException uhn)
        {
            
        }
        
        try
        {
            receiveSocket = new DatagramSocket(serverGUI.udpPort);
            //System.out.println(receiveSocket.getInetAddress().getCanonicalHostName());
        } catch(SocketException se)
        {
            serverGUI.appendDisplayArea("无法打开DatagramSocket,无法接收消息，请确定端口可用，然后重新启动\n");
            return ;
        }
        
       packetReceived = new DatagramPacket(byteReceived, 1024);
       if (packetReceived == null)
           serverGUI.appendDisplayArea("null\n");
    }
    public void run()
    {
        while(true)
        {
	        try
	        {
	            receiveSocket.receive(packetReceived);
	            System.out.println(packetReceived.getLength());
	            serverGUI.appendDisplayArea("接到一个DatagramPacket\n");
	        } catch(IOException ioe)
	        {
	            serverGUI.appendDisplayArea("接收一个DatagramPacket时出现输入输出异常\n");
	        }
	        iterSockets = tcpThread.sockets.values().iterator();
	        if (iterSockets != null)
	        {
	            //debug:
	            System.out.println("iterSockets is not null");
	            while(iterSockets.hasNext())
	            {
	                //debug
	                System.out.println("iterSockets has next");
	                try
	                {
	                    out = ((Socket)iterSockets.next()).getOutputStream();
	                } catch(IOException ioe)
	                {
	                    serverGUI.appendDisplayArea("得到TCP连接输出时出现错误\n");
	                    out = null;
	                }
	                if (out != null)
	                {
	                    System.out.println("outputStream is not null");
	                    datumOut = new PrintStream(out);
                        //datumOut.write(packetReceived.getData(), 0, packetReceived.getLength());
                        String temp = new String(byteReceived);
                        System.out.print(temp);
                        datumOut.println(temp);
                        System.out.println("to write(packetReceived.getData())");
	                }
	            }
	        }
        }
    }
}