Java--nio-tcp Socket

1, First we use socketchannel, to implement the socket client

 packagecom.seeyon.nio.socket;Importjava.io.IOException;Importjava.net.InetSocketAddress;Importjava.nio.ByteBuffer;Importjava.nio.channels.SocketChannel;/*** Created by Yangyu on 2017/2/22.*/ public classClient { public Static voidmain (string[] Args) {Try(socketchannel Socketchannel = Socketchannel.open (NewInetsocketaddress ("localhost", 8088)) {socketchannel.configureblocking (false); Bytebuffer Bytebuffer= Bytebuffer.allocate (512); Socketchannel.write (bytebuffer.wrap ("this is client send message". GetBytes ()));  while(true) {bytebuffer.clear (); intReadbytes =Socketchannel.read (bytebuffer); if(readbytes > 0) {bytebuffer.flip (); System.out.println (NewString (bytebuffer.array (), 0, readbytes));                    Socketchannel.close ();  break; }            }        } Catch(ioexception E) {e.printstacktrace (); }    }}

2, use Serversocketchannel to implement the service side, and use selector

 packagecom.seeyon.nio.socket;Importjava.io.IOException;Importjava.net.InetSocketAddress;Importjava.nio.ByteBuffer;Importjava.nio.channels.SelectionKey;Importjava.nio.channels.Selector;Importjava.nio.channels.ServerSocketChannel;Importjava.nio.channels.SocketChannel;Importjava.util.Iterator;Importjava.util.Set;/*** Created by Yangyu on 2017/2/22.*/ public classServer { public Static voidMain (string[] Args)throwsIOException {serversocketchannel Serverchannel=Serversocketchannel.open (); Serverchannel.socket (). bind (NewInetsocketaddress (8088)); Serverchannel.configureblocking (false); Selector Selector=Selector.open ();        Serverchannel.register (selector, selectionkey.op_accept);  while(true) {selector.select (); Set<SelectionKey> Readykeys =Selector.selectedkeys (); Iterator<SelectionKey> iterator =Readykeys.iterator ();  while(iterator.hasnext ()) {selectionkey key=Iterator.next ();                Iterator.remove (); if(key.isacceptable ()) {System.out.println ("accept"); Bytebuffer Bytebuffer= Bytebuffer.allocate (512); Serversocketchannel Serversocketchannel=(serversocketchannel) Key.channel (); Socketchannel Socketchannel=serversocketchannel.accept (); Socketchannel.configureblocking (false); intReadkeys =Socketchannel.read (bytebuffer); if(readkeys > 0) {bytebuffer.flip (); System.out.println (NewString (bytebuffer.array (), 0, readkeys)); } socketchannel.write (bytebuffer.wrap ("received". GetBytes ())); } Else if(key.isreadable ()) {System.out.println ("read"); } Else if(key.iswritable ()) {System.out.println ("write"); }            }        }    }}

Java--nio-tcp Socket