Socket usage Related

Learned in a small exercise program Package com.sdut.edu.tools; Import Java.io.BufferedWriter; Import java.io.IOException; Import Java.io.InputStream; Import Java.io.OutputStreamWriter; Import Java.io.PrintWriter; Import java.net.InetSocketAddress; Import Java.net.Socket; Import java.net.SocketAddress; Import java.net.SocketException; Import Java.util.Scanner; Import Android.app.ActivityManager; Import Android.app.AlertDialog; Import Android.content.Context; Import Android.content.DialogInterface; Import Android.util.Log; public class ConnectServer { public string ConnectServer (String str) throws Socketexception,ioexception {//Get the response string from the server TODO auto-generated Method Stub String result = null; StringBuffer tempstr=new StringBuffer ();//result of final return try{ int c=0; Create a socket object based on the server's IP and port number to establish a connection to the server Socket socket=new socket (); How to construct the socket, Socket.connect (New Inetsocketaddress ("192.168.0.189", 4444), 4000); Receives the data amount object obtained from the server if (socket.getremotesocketaddress () ==null) // { // // } Socket.connect (REMOTEADDR); BufferedReader in=new BufferedReader (New InputStreamReader (Socket.getinputstream (), "Utf-8"), 10000); InputStream Is=socket.getinputstream (); transcoding problems with receiving data Scanner in=new Scanner (IS); Creates a PrintWriter object from the established socket and sends the information to the server through this object. PrintWriter out=new PrintWriter (New BufferedWriter (New OutputStreamWriter (Socket.getoutputstream (), "Utf-8"), true) ; Send Message Out.println (str); LOG.D ("listadapter_getvediourl_isconnected", socket.isconnected () + ""); To determine the connection timeout if (socket.isconnected ())//To determine the client-server connection, receive the response string { while (In.hasnextline ()) { Result=in.nextline (); Tempstr.append (result); System.out.println (TEMPSTR); } } Else { SYSTEM.OUT.PRINTLN ("Connection service timeout"); } Out.close (); In.close (); Socket.close ();//After completion. Close socket }catch (SocketException e) // { Return "-1"; System.out.println ("Connection failed"); E.printstacktrace (); }catch (IOException e) { Return "-2"; // } return tempstr.tostring (); } } Copy Code

