Java Multithreading for multi-client socket communication

First, the service side

 PackageCom.czhappy.hello.socket;Importjava.io.IOException;Importjava.net.InetAddress;ImportJava.net.ServerSocket;ImportJava.net.Socket; Public classServer { Public Static voidMain (string[] args) {//Create ServerSocket example, specify port, listen        Try{serversocket ServerSocket=NewServerSocket (8888); System.out.println ("Service is about to start, waiting for client to connect"); //log the number of clients            intCount = 0; Socket Socket=NULL;  while(true){                //start listening, waiting for the client to connectSocket =serversocket.accept (); Serverthread Serverthread=Newserverthread (socket);                Serverthread.start (); Count++; System.out.println ("Number of clients =" +count); InetAddress Address=socket.getinetaddress (); System.out.println ("The IP address of the current client is:" +address.gethostaddress ()); }        } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); }    }}

 PackageCom.czhappy.hello.socket;ImportJava.io.BufferedReader;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;ImportJava.io.OutputStream;ImportJava.io.PrintWriter;Importjava.io.UnsupportedEncodingException;ImportJava.net.Socket;/*** Server thread processing class *@authorAdministrator **/ Public classServerthreadextendsthread{Socket Socket=NULL;  PublicServerthread (socket socket) { This. Socket =socket; }         Public voidrun () {InputStream is=NULL; InputStreamReader ISR=NULL; BufferedReader BR=NULL; OutputStream OS=NULL; PrintWriter PW=NULL; Try {            //get byte input streamis =Socket.getinputstream (); //flow byte input to character input streamISR =NewInputStreamReader (IS, "Utf-8"); //adding buffering for character input streamsBR =NewBufferedReader (ISR); String Data=Br.readline ();  while(data!=NULL) {System.out.println ("I am the server," said the client, "+data); Data=Br.readline (); }            //close the input streamSocket.shutdowninput (); //gets the output stream in response to a client requestOS =Socket.getoutputstream (); PW=Newprintwriter (OS); Pw.write ("Welcome you!" ");        Pw.flush (); } Catch(unsupportedencodingexception e) {//TODO auto-generated Catch blockE.printstacktrace (); } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); }finally{            Try {                if(pw!=NULL) {pw.close (); }                if(os!=NULL) {os.close (); }                if(br!=NULL) {br.close (); }                if(isr!=NULL) {isr.close (); }                if(is!=NULL) {is.close (); }                if(socket!=NULL) {socket.close (); }            } Catch(IOException e) {e.printstacktrace (); }        }            }}

Second, the client

 PackageCom.czhappy.hello.socket;ImportJava.io.BufferedReader;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;ImportJava.io.OutputStream;ImportJava.io.PrintWriter;ImportJava.net.Socket;Importjava.net.UnknownHostException; Public classClient { Public Static voidMain (string[] args) {Try {            //Create a client socket, specify the server address and PortSocket socket =NewSocket ("192.168.0.45", 8888); //get output stream, send message to serverOutputStream OS = Socket.getoutputstream ();//byte output streamPrintWriter PW =NewPrintWriter (OS);//wrapping the output stream as a print streamPw.write ("username: admin; password: 123");            Pw.flush (); Socket.shutdownoutput ();//turn off the output stream//get input stream, read server-side response informationInputStream is =Socket.getinputstream (); BufferedReader BR=NewBufferedReader (NewInputStreamReader (IS)); String Data=Br.readline ();  while(data!=NULL) {System.out.println ("I am the client, the server says:" +data); Data=Br.readline ();            } br.close ();            Is.close ();            Pw.close ();            Os.close ();        Socket.close (); } Catch(unknownhostexception e) {//TODO auto-generated Catch blockE.printstacktrace (); } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); }    }        }

Third, test results

You need to start the server before you start the client

Server Run Results:

Client Run Results:

Java Multithreading for multi-client socket communication