Java Basic Knowledge Enhancement Network programming note 13:tcp TCP protocol upload images and give feedback

1. The TCP protocol uploads images and gives feedback:

(1) Client:

1  Packagecn.itcast_13;2 3 ImportJava.io.BufferedInputStream;4 ImportJava.io.BufferedOutputStream;5 ImportJava.io.FileInputStream;6 Importjava.io.IOException;7 ImportJava.io.InputStream;8 ImportJava.net.Socket;9 Ten  Public classuploadclient { One      Public Static voidMain (string[] args)throwsIOException { A         //creating a Client socket object -Socket s =NewSocket ("192.168.12.92", 19191); -  the         //Package picture File -Bufferedinputstream bis =NewBufferedinputstream (NewFileInputStream ( -"Brigitte. jpg")); -         //flow within the encapsulated channel +Bufferedoutputstream BOS =NewBufferedoutputstream (S.getoutputstream ()); -  +         byte[] Bys =New byte[1024]; A         intLen = 0; at          while(len = Bis.read (bys))! =-1) { -Bos.write (bys, 0, Len); - Bos.flush (); -         } -          - s.shutdownoutput (); in  -         //Read Feedback toInputStream is =S.getinputstream (); +         byte[] Bys2 =New byte[1024]; -         intLen2 =Is.read (BYS2); theString client =NewString (BYS2, 0, len2); * System.out.println (client); $ Panax Notoginseng         //Freeing Resources - bis.close (); the s.close (); +     } A}

(2) Service side:

1  Packagecn.itcast_13;2 3 ImportJava.io.BufferedInputStream;4 ImportJava.io.BufferedOutputStream;5 ImportJava.io.FileOutputStream;6 Importjava.io.IOException;7 ImportJava.io.OutputStream;8 ImportJava.net.ServerSocket;9 ImportJava.net.Socket;Ten  One  Public classUploadserver { A      Public Static voidMain (string[] args)throwsIOException { -         //Create a Server socket object -ServerSocket SS =NewServerSocket (19191); the  -         //Listening for client connections -Socket s =ss.accept (); -  +         //Package Channel Internal flow -Bufferedinputstream bis =NewBufferedinputstream (S.getinputstream ()); +         //Package picture File ABufferedoutputstream BOS =NewBufferedoutputstream ( at                 NewFileOutputStream ("Mn.jpg")); -  -         byte[] Bys =New byte[1024]; -         intLen = 0; -          while(len = Bis.read (bys))! =-1) { -Bos.write (bys, 0, Len); in Bos.flush (); -         } to  +         //Give a feedback -OutputStream OS =S.getoutputstream (); theOs.write ("Image upload succeeded". GetBytes ()); *  $ bos.close ();Panax Notoginseng s.close (); -     } the}

Java Basic Knowledge Enhancement Network programming note 13:tcp TCP protocol upload images and give feedback