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package com.vista.Server;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Set;
public class SelectorServer
{
private static int DEFAULT_SERVERPORT = 6018;//ĬÈ϶˿Ú
private static int DEFAULT_BUFFERSIZE = 1024;//ĬÈÏ»º³åÇø´óСΪ1024×Ö½Ú
private ServerSocketChannel channel;
private LinkedList<SocketChannel> clients;
private Selector readSelector;
private ByteBuffer buffer;//×Ö½Ú»º³åÇø
private int port;

public SelectorServer(int port) throws IOException
{
this.port = port;
this.clients = new LinkedList<SocketChannel>();
this.channel = null;
this.readSelector = Selector.open();//´ò¿ªÑ¡ÔñÆ÷
this.buffer = ByteBuffer.allocate(DEFAULT_BUFFERSIZE);
}
// ·þÎñÆ÷³ÌÐòÔÚ·þÎñÑ­»·Öе÷ÓÃsericeClients()·½·¨ÎªÒѽÓÊܵĿͻ§·þÎñ
public void serviceClients()throws IOException
{
Set keys;
Iterator it;
SelectionKey key;
SocketChannel client;
// ÔÚreadSelectorÉϵ÷ÓÃselect()·½·¨£¬²ÎÊý1´ú±íÈç¹ûµ÷ÓÃselectµÄʱºò ÄÇô×èÈû×î¶à1ÃëÖӵȴý¿ÉÓõĿͻ§¶ËÁ¬½Ó
if(readSelector.select(1) > 0)
{
keys = readSelector.selectedKeys(); // È¡µÃ´ú±í¶ËͨµÀµÄ¼ü¼¯ºÏ
it = keys.iterator();
// ±éÀú£¬ÎªÃ¿Ò»¸ö¿Í»§·þÎñ
while(it.hasNext())
{
key = (SelectionKey)it.next();
if(key.isReadable())
{ // Èç¹ûͨµÀ¿É¶Á£¬ÄÇô¶Á´ËͨµÀµ½bufferÖÐ
int bytes;
client = (SocketChannel)key.channel();// È¡µÃ¼ü¶ÔÓ¦µÄͨµÀ
buffer.clear(); // Çå¿Õ»º³åÇøÖеÄÄÚÈÝ£¬ÉèÖúÃpositi


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import java.util.*;
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