Analog Client Login (TCP-based socket programming)

1, the Client

 package com.ljb.app.socket;import java.io.BufferedReader;import java.io.IOException; Import java.io.inputstream;import java.io.inputstreamreader;import java.io.outputstream;import  java.io.printwriter;import java.net.socket;import java.net.unknownhostexception;/** *   Client (simulate customer login and receive server response information)  *  @author  LJB *  @version  2015 March 11  */public  class LoginClient { /**  *  @param  args  */ public  static void main (String[] args)  {  try {   //  Establish a client Socket connection, specify the location of the server and port    socket socket = new socket ("localhost", 8800);       //  get socket read/write Flow    OutputStream os =  Socket.getoutputstream ();    printwriter pw = new printwriter (OS);       //  receivedTake input stream    inputstream is = socket.getinputstream ();    bufferedreader  br = new bufferedreader (New inputstreamreader (IS));       //  write    String info =  "user name: Tom, Password: 123456";    Pw.write (info);    pw.flush ();    socket.shutdownoutput ();       //  Receive server Response    String reply = null;   while  ( ! ((Reply = br.readline ())  == null))  {    system.out.println ("I am the client, the server response is:"  + reply);   }       //  Close Flow    br.close ();    is.close ();    pw.close ();    os.close ();    socket.close ();   } catch   (unknownhostexception e)  {   e.printstacktrace ();  } catch  (ioexception e)  {   e.printstacktrace ();   }  }}

2, server-side

 package com.ljb.app.socket;import java.io.BufferedReader;import java.io.IOException; Import java.io.inputstream;import java.io.inputstreamreader;import java.io.outputstream;import  java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;/** *  Server (receive client login information and respond)  *  @author  LJB *  @version  2015 March 11  */public class  LoginServer { /**  *  @param  args  */ public static  void main (String[] args)  {   try {   //  Set up a server binding specified port socket (serversocket) and start listening    ServerSocket serverSocket = new  ServerSocket (8800);      //  use the Accept () method to block waiting for monitoring, to obtain a new connection     Socket socket = serversocket.accept ();      //  get input stream     inputstream is =  Socket.getinputstream ();    bufferedreader br = new bufferedreader (new  inputstreamreader (IS));      //  get the output stream    outputstream  os = socket.getoutputstream ();   printwriter pw = new  PrintWriter (OS);      //  read user input information    string info =  null;   while  (!) ( (Info = br.readline ())  == null))  {    system.out.println ("I am a server, User information: " + info);   }      //  response Information     String reply =  "Welcome";    pw.write (reply);    pw.flush ();       //  Close Flow    pw.close ();    os.close ();    br.close ();    is.close ();    socket.close ();     serversocket.close ();  } catch  (ioexception e)  {    E.printstacktrace ();   }  }}

Operation Result:

Client:

I am the client, the server response is: Welcome

Service side:

I am the server, the user information is: User name: Tom, Password: 123456

Analog Client Login (TCP-based socket programming)