"Java NiO" nonblocking nio

1  PackageCom.slp.nio;2 3 Importorg.junit.Test;4 5 Importjava.io.IOException;6 Importjava.net.InetSocketAddress;7 ImportJava.nio.ByteBuffer;8 ImportJava.nio.channels.SelectionKey;9 ImportJava.nio.channels.Selector;Ten ImportJava.nio.channels.ServerSocketChannel; One ImportJava.nio.channels.SocketChannel; A ImportJava.time.LocalDateTime; - Importjava.util.Date; - ImportJava.util.Iterator; the ImportJava.util.Scanner; -  - /** - * Created by SANGLP on 2017/3/2. + * I. Three cores to complete network communication using NIO - * 1, Channel: Responsible for the connection + * |--java.nio.channels.channel Interface A * |--selectablechannel at * |--socketchannel - * |--serversocketchannel - * |--datagramchannel -  * - * |--pipe.sinkchannel - * |--pipe.sourcechannel in * 2, Buffer: Responsible for data access - * 3, selector: Selectablechannel multiplexer for monitoring the IO status of Selectablechannel to  * +  */ -  Public classTestnonblockingnio { the  * @Test $      Public voidClient ()throwsIOException {Panax Notoginseng         //Get channel -Socketchannel Socketchannel = Socketchannel.open (NewInetsocketaddress ("127.0.0.1", 9898)); the         //switch to non-blocking mode +Socketchannel.configureblocking (false); A         //Allocating buffers theBytebuffer buf = bytebuffer.allocate (1024); +         //send data to the server -  $Scanner Scanner =NewScanner (system.in); $          while(Scanner.hasnext ()) { -String str =Scanner.next (); -Buf.put ((NewDate (). toString () + "\ n" +str). GetBytes ()); the Buf.flip (); - Socketchannel.write (BUF);Wuyi buf.clear (); the         } -  Wu  -         //Close Channel About socketchannel.close (); $  -     } -  - @Test A      Public voidServer ()throwsIOException { +         //Get channel theServersocketchannel Serversocketchannel =Serversocketchannel.open (); -         //Toggle Non-blocking mode $Serversocketchannel.configureblocking (false); the         //Binding Connections theServersocketchannel.bind (NewInetsocketaddress (9898)); the         //Get a selector theSelector Selector =Selector.open (); -         //registers the channel with the selector and specifies that the listener receives the event in Serversocketchannel.register (selector, selectionkey.op_accept); the         //polling for an event that is already ready on the picker the          while(Selector.select () >0){ About             //gets all the registered selection keys in the current selector (Ready listener events) theIterator<selectionkey> it =Selector.selectedkeys (). iterator (); the              while(It.hasnext ()) { the                 //get ready-to-go events +Selectionkey SK =It.next (); -                 //determine what the event is, ready to go. the                 if(Sk.isacceptable ()) {Bayi                     //Get justifying connection theSocketchannel Socketchannel =serversocketchannel.accept (); the                     //Toggle Non-blocking mode -Socketchannel.configureblocking (false); -                     //register the channel on the selector the Socketchannel.register (selector,selectionkey.op_read); the}Else if(Sk.isreadable ()) { the                     //gets the channel for the read-ready state on the current selector theSocketchannel Socketchannel =(Socketchannel) Sk.channel (); -                     //reading Data theBytebuffer buffer = bytebuffer.allocate (1024); the                     intLen =0; the                      while(Len=socketchannel.read (buffer)) >0){94 Buffer.flip (); theSystem.out.println (NewString (Buffer.array (), 0, Len)); the buffer.clear (); the                     }98                 } About                 //deselect Key - It.remove ();101             }102         }103     }104}

"Java NiO" nonblocking nio