java NIO SocketClinet和ServerSocket的实例用法

本篇内容介绍了“java NIO SocketClinet和ServerSocket的实例用法”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

//SocketClient.java//---------------------------------------------------------------------------------package niotest;import java.io.IOException;import java.net.InetSocketAddress;import java.nio.ByteBuffer;import java.nio.channels.SelectionKey;import java.nio.channels.Selector;import java.nio.channels.SocketChannel;import java.util.Iterator;import java.util.Set;public class SocketClient {public static void main(String[] args) throws IOException {Selector sc = Selector.open();SocketChannel skc = SocketChannel.open();skc.configureBlocking(false);skc.connect(new InetSocketAddress("127.0.0.1", 44444));skc.register(sc, SelectionKey.OP_CONNECT);while(true) {sc.select();Set<SelectionKey> selectkey = sc.selectedKeys();Iterator it = selectkey.iterator();while(it.hasNext()) {SelectionKey key = (SelectionKey) it.next();if(key.isConnectable()) {SocketChannel msk = (SocketChannel) key.channel();if(!msk.isConnected()) {while(!msk.finishConnect()) {}}msk.register(sc, SelectionKey.OP_WRITE);}else if (key.isReadable()) { }else if(key.isWritable()) {SocketChannel msk = (SocketChannel) key.channel();ByteBuffer bb = ByteBuffer.wrap(new String("hellow world!").getBytes());msk.write(bb);while (bb.hasRemaining()){msk.write(bb);}key.cancel();}else if(key.isAcceptable()) {}else {throw new RuntimeException("unknow selection type!");}it.remove();}}}}//SocketServer.java//----------------------------------------------------------------------------------------------------------package niotest;import java.io.IOException;import java.net.InetSocketAddress;import java.net.SocketAddress;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.Set;public class SocketServer {public static void main(String[] args) throws Exception {ServerSocketChannel sc = ServerSocketChannel.open();sc.configureBlocking(false);sc.bind(new InetSocketAddress(44444));Selector tor = Selector.open();sc.register(tor, SelectionKey.OP_ACCEPT);while(true) {tor.select();Set<SelectionKey> selectkey = tor.selectedKeys();Iterator it = selectkey.iterator();while(it.hasNext()) {SelectionKey key = (SelectionKey) it.next();if(key.isAcceptable()) {ServerSocketChannel msk = (ServerSocketChannel) key.channel();SocketChannel msc = msk.accept();msc.configureBlocking(false);msc.register(tor, SelectionKey.OP_READ);}else if(key.isConnectable()) {}else if (key.isWritable()) {}else if(key.isReadable()) {SocketChannel msc = (SocketChannel) key.channel();ByteBuffer bb = ByteBuffer.allocate(17);while(bb.hasRemaining()) {msc.read(bb);}System.out.println("服务端："+new String(bb.array()));}else {throw  new RuntimeException("unknow selection!");}it.remove();}}}}

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