A classic case of TCP socket communication based on multithreading

Server-side

 PackageCom.thinkvenus.study.socket;ImportJava.io.BufferedReader;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;ImportJava.io.OutputStream;ImportJava.io.PrintWriter;ImportJava.net.Socket;/*** Server thread processing class*/ Public classThreadserverextendsThread {Privatesocket socket;  Publicthreadserver (socket socket) { This. Socket =socket; }        /*** Actions performed by threads, responding to client requests*/@Override Public voidrun () {InputStream is=NULL; InputStreamReader ISR=NULL; BufferedReader BR=NULL; OutputStream OS=NULL; PrintWriter PW=NULL; Try{ is=Socket.getinputstream (); ISR=NewInputStreamReader (IS); BR=NewBufferedReader (ISR);            String msg;  while(msg = Br.readline ())! =NULL) {System.out.println ("Here is the server side, the client said:" +msg); } socket.shutdowninput ();//Close Input//gets the output stream that responds to the client's requestOS =Socket.getoutputstream (); PW=Newprintwriter (OS); Pw.write ("Welcome You");        Pw.flush (); } Catch(IOException e) {e.printstacktrace (); } finally {                        //Close Resource            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 (); }                    }    }    }

 PackageCom.thinkvenus.study.socket;ImportJava.io.BufferedReader;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;ImportJava.io.OutputStream;ImportJava.io.PrintWriter;ImportJava.net.ServerSocket;ImportJava.net.Socket;/*** TCP-based socket communication*/ Public classServer { Public Static voidMain (string[] args) {Try{serversocket ServerSocket=NewServerSocket (8888); System.out.println ("***************** server is about to start, waiting for client connection **********"); intCount = 0; //looping through a client's connection             while(true) {Socket Socket= Serversocket.accept ();//Start listening .Threadserver ts =Newthreadserver (socket);                Ts.start (); Count++; System.out.println ("Number of clients:" +count); }                    } Catch(IOException e) {e.printstacktrace (); }            }    }

Client:

 PackageCom.thinkvenus.study.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{Socket Socket=NewSocket ("localhost", 8888); OutputStream OS=Socket.getoutputstream (); PrintWriter PW=NewPrintWriter (OS);//wrapping the output stream as a print streamPw.println ("Username=aaron; Pwd= "+math.random ());                        Pw.flush (); Socket.shutdownoutput ();//Turn off output//get the input stream to get the server-side responseInputStream is =Socket.getinputstream (); InputStreamReader ISR=NewInputStreamReader (IS); BufferedReader BR=NewBufferedReader (ISR);            String msg;  while(msg = Br.readline ())! =NULL) {System.out.println ("I am the client," said the service-side: "+msg); }                        //Close ResourceBr.close ();            Isr.close ();            Is.close ();            Pw.close ();            Os.close ();                    Socket.close (); } Catch(unknownhostexception e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); }    }    }

A classic case of TCP socket communication based on multithreading