JAVA BIO Server and client implementation examples

The code is compatible with Java version 7 and above only.

Server-side code:

Package Com.stevex.app.bio; Import Java.io.bufferedreader;import Java.io.ioexception;import Java.io.inputstreamreader;import Java.io.printwriter;import Java.net.serversocket;import Java.net.Socket; Import Javax.net.ServerSocketFactory;                 public class Xiaona {public static void main (string[] args) {Xiaona Xiaona = new Xiaona ();        ServerSocket serversocket = null;         Socket socket = NULL; try {//can set the length of the Client connection request queue, such as 5, which rejects the connection request after the queue length exceeds 5//serversocket = Serversocketfactory.getdefault (). Creates                  Erversocket (8383, 5);                         ServerSocket = Serversocketfactory.getdefault (). Createserversocket (8383); while (true) {try{//listens until a connection is accepted to return a new socket object socket = Serversocket.acce                PT ();//block//new a thread handles the connection request new thread (Xiaona.new Worker (socket)). Start ();            } catch (Throwable e) {//Prevent an exception from killing the server                  E.printstacktrace ();        }}} catch (IOException e) {e.printstacktrace (); } finally{try {if (socket! = NULL) {s                Ocket.close ();            }} catch (IOException e) {e.printstacktrace ();                 }}} private static string Getanswer (String question) {string answer = NULL;            Switch (question) {case ' who ': answer = "I am Cortana";        Break            Case ' What ': Answer = "I'm here to help you with your sorrows";        Break            Case "where": Answer = "I come from outer space";        Break        Default:answer = "Please enter who, or what, or where";    } return answer;                 } Private class Worker implements runnable{private socket socket;      Public Worker (socket socket) {      This.socket = socket;            } @Override public void Run () {BufferedReader reader = null;                         PrintWriter writer = null;                             try {reader = new BufferedReader (New InputStreamReader (Socket.getinputstream ()));                                 writer = new PrintWriter (Socket.getoutputstream ());                    String question = Reader.readline ();//no content blocks while (!question.equals ("over")) {                    String answer = getanswer (question);                    Writer.println (answer);                Question = Reader.readline ();                                 } writer.println ("over");//over as Operation complete code writer.flush ();                if (writer! = null) {writer.close ();          } if (reader! = null) {reader.close ();      }} catch (IOException e) {e.printstacktrace (); }        }             }}

Customer Segment Code:

Package Com.stevex.app.bio; Import Java.io.bufferedreader;import Java.io.ioexception;import Java.io.inputstreamreader;import Java.io.printwriter;import Java.net.Socket;                 public class Client {public static void main (string[] args) {Client c = new Client ();        Type 20 threads to initiate a socket client connection request for (int i=0; i<20; i++) {new Thread (C.new Worker ()). Start (); }} Private class Worker implements runnable{@Override public void Run () {Soc            KET socket = NULL;            BufferedReader reader = null;             PrintWriter writer = null;                 try {//Create a socket and connect to the specified target server socket = new socket ("localhost", 8383);                reader = new BufferedReader (New InputStreamReader (Socket.getinputstream ()));                 writer = new PrintWriter (Socket.getoutputstream ());                Writer.println ("who");          Writer.println ("what");      Writer.println ("where");                 Writer.println ("over");//over as Operation complete code writer.flush ();   String answer = Reader.readline (); No content blocks while (! answer.equals ("over")) {System.out.println (Thread                    . CurrentThread (). GetId () + "---Message from server:" + answer);                Answer = Reader.readline ();            }} catch (IOException e) {e.printstacktrace ();                    } finally {try {if (writer! = null) {writer.close ();                    } if (reader! = null) {reader.close ();                    } if (socket! = NULL) {socket.close ();                }} catch (IOException e) {e.printstacktrace (); }            }        }             }}

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JAVA BIO Server and client implementation examples