import?java.io.FileInputStream;??
import?java.net.InetSocketAddress;??
import?java.net.Socket;??
import?java.nio.ByteBuffer;??
import?java.nio.CharBuffer;??
import?java.nio.channels.SelectionKey;??
import?java.nio.channels.Selector;??
import?java.nio.channels.ServerSocketChannel;??
import?java.nio.channels.SocketChannel;??
import?java.nio.charset.Charset;??
import?java.nio.charset.CharsetDecoder;??
import?java.nio.charset.CharsetEncoder;??
import?java.util.Iterator;??
import?java.util.Properties;??
import?java.util.Set;
??
public?class?clientServer?{??
??
public?static?final?int?PORT?=?12315;??
protected?Selector?selector;??
protected?Charset?charset?=?Charset.forName（“UTF-8“）;??
protected?CharsetEncoder?charsetEncoder?=?charset.newEncoder（）;??
protected?CharsetDecoder?charsetDecoder?=?charset.newDecoder（）;???
int?clientCount;

public?clientServer（）?throws?Exception?{??
	selector?=?Selector.open（）;??
	ServerSocketChannel?serverSocketChannel?=?ServerSocketChannel.open（）;??
	serverSocketChannel.socket（）.bind（new?InetSocketAddress（PORT））;?//?port??
	serverSocketChannel.configureBlocking（false）;??
	serverSocketChannel.register（selector?SelectionKey.OP_ACCEPT）;//?register??
	p（“Server?localhost:“?+?PORT?+?“?started.?waiting?for?clients.?“）;??
	while?（true）?{??
	???int?num?=?selector.select（）;//獲取通道內是否有選擇器的關心事件
	???if?（num?	????continue;
	???}
	???Set?selectedKeys?=?selector.selectedKeys（）;//獲取通道內關心事件的集合
	???Iterator?iterator?=?selectedKeys.iterator（）;//使用迭代放式，遍歷事件集合
	???while?（iterator.hasNext（））?{
	????SelectionKey?key?=?（SelectionKey）?iterator.next（）;
	????iterator.remove（）;//移走此次事件
	????//?并在當前線程內處理。（為了高效，一般會在另一個線程中處理此消息，例如使用線程池等）??
	????handleSelectionKey（key）;??
	???}??
	}??
}??
??
public?void?handleSelectionKey（SelectionKey?selectionKey）?throws?Exception?{??
	SocketChannel?socketChannel;
	
	if?（selectionKey.isAcceptable（））?{?//?判斷是否有新的客戶端進來?????
		clientCount++;
		socketChannel?=?（（ServerSocketChannel）?selectionKey.channel（））.accept（）;?//得到與客戶端通道的套接字?
		socketChannel.configureBlocking（false）;
		//?立即注冊一個?OP_READ?的SelectionKey?接收客戶端的消息??
		SelectionKey?key?=?socketChannel.register（selector?SelectionKey.OP_READByteBuffer.allocate（1024））;??
		//key.attach（““）;
		key.attach（“第?“?+?clientCount?+?“?個客戶端=========================================?“）;
		//key.interestOps（SelectionKey.OP_ACCEPT）;
		System.out.println（“有新客戶端連接“+socketChannel）;
	}?
	
	if?（selectionKey.isReadable（））?{??
		//?有消息進來??，有數據可讀
		socketChannel?=?（SocketChannel）?selectionKey.channel（）;
		ByteBuffer?byteBuffer?=?ByteBuffer.allocate（1024）;
			try?{??
				int?len?=?socketChannel.read（byteBuffer）;
				if?（len>0）?{
					byteBuffer.flip（）;
					String?msg?=?charsetDecoder.decode（byteBuffer）.toString（）;??
					System.out.println（“接收數據:?“+msg）;
					socketChannel.write（charsetEncoder.encode（CharBuffer.wrap（msg?+?“\n“）））;
					System.out.println（“返回數據:?“+msg）;
					selectionKey.interes

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\
?????文件?????????299??2013-08-08?19:23??無線點餐系統\server\.classpath
?????文件?????????382??2013-08-08?19:23??無線點餐系統\server\.project
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\.settings\
?????文件?????????629??2013-08-08?19:23??無線點餐系統\server\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\bin\
?????文件????????5171??2013-08-15?22:45??無線點餐系統\server\bin\clientServer.class
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\bin\com\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\bin\com\vista\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\bin\com\vista\Server\
?????文件?????????817??2013-08-15?22:45??無線點餐系統\server\bin\com\vista\Server\SelectorServer$HandleClient.class
?????文件????????4746??2013-08-15?22:45??無線點餐系統\server\bin\com\vista\Server\SelectorServer.class
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\src\
?????文件????????4388??2013-08-11?22:34??無線點餐系統\server\src\clientServer.java
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\src\com\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\src\com\vista\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\server\src\com\vista\Server\
?????文件????????6573??2013-08-09?09:23??無線點餐系統\server\src\com\vista\Server\SelectorServer.java
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\
?????文件?????????380??2013-05-05?22:50??無線點餐系統\WirelessOrder_Client\.classpath
?????文件?????????856??2013-05-05?22:40??無線點餐系統\WirelessOrder_Client\.project
?????文件????????1270??2013-05-05?22:40??無線點餐系統\WirelessOrder_Client\AndroidManifest.xml
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\assets\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\bin\
?????文件????????1270??2013-08-05?23:12??無線點餐系統\WirelessOrder_Client\bin\AndroidManifest.xml
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\bin\classes\
?????文件???????48340??2013-05-05?23:02??無線點餐系統\WirelessOrder_Client\bin\classes.dex
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\bin\classes\com\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\bin\classes\com\amaker\
?????目錄???????????0??2014-03-26?22:21??無線點餐系統\WirelessOrder_Client\bin\classes\com\amaker\provider\
............此處省略153個文件信息