Java learning [network programming], java Network Programming

Java learning [network programming], java Network Programming

Blog: http://blog.csdn.net/muyang_ren

Sending and receiving threads
Recv. java

package lhy.socket.server;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.Socket;public class Recv implements Runnable{    String  str = null;    private Socket            client    = null;    private InputStreamReader recv      = null;    private BufferedReader    reader    = null;    public Recv(Socket c) {        this.client = c;    }    public void run() {        System.out.println("recv thread");        //System.out.flush();        try {            recv    =   new InputStreamReader(client.getInputStream());            reader  =   new BufferedReader(recv);            while (!client.isClosed()) {                str = reader.readLine();                System.out.println(str);            }            client.close();        } catch (IOException e) {            e.printStackTrace();        }    }}

Send. java

Package lhy. socket. server; import java. io. IOException; import java. io. outputStreamWriter; import java. io. printWriter; import java.net. socket; import java. util. required; public class Send implements Runnable {private Socket client = null; private static OutputStreamWriter send = null; private static PrintWriter writer = null; required sin = null; String msgstr = null; string sendstr = null; // c: client or server socket // Str: String sent by the Client or Server: Server or Client public Send (Socket c, String str) {this. client = c; this. sendstr = str;} public void run () {System. out. println ("send thread"); sin = new Queue (System. in); try {send = new OutputStreamWriter (client. getOutputStream (); writer = new PrintWriter (send, true); while (! Client. isClosed () {msgstr = sin. nextLine (); writer. println (sendstr + client. getInetAddress () + ":" + msgstr) ;}} catch (IOException e) {System. out. println (e. getMessage ());}}}

Server
TestServer. java

Package lhy. socket. server; import java. io. IOException; import java.net. serverSocket; import java.net. socket; public class TestServer {private static ServerSocket server; private static final int TCP_PORT = 3002;/*** @ param args */public static void main (String [] args) {System. out. println ("server-> to: hello world! The greatest program! "); Try {// 1. Set server = new ServerSocket (TCP_PORT); System. out. println (" the server has been started! "); While (true) {// 2. listen to the client. Only communication with one client is implemented here. // [if you want to communicate with multiple clients, save the client to the set through monitoring/listening, sending only one thread is enough. Re-// write the send method, for example, to implement the set of calendar times for sending; when the server // receives information, it needs to open a thread for each listener client.] Socket client = server. accept (); // 3. open receiving Thread Recv readthread = new Recv (client); new Thread (readthread, "Server-Read-Thread "). start (); Send sendthread = new Send (client, "Server"); new Thread (sendthread, "Server-Send-Thread "). start () ;}} catch (IOException e) {System. out. println (e. getMessage ());}}}

Client

Package lhy. socket. server; import java. io. IOException; import java.net. socket; import java.net. unknownHostException; public class TestClient {private static Socket clienSocket; private final static String TCP_IP = "127.0.0.1"; private final static int TCP_PORT = 3002; /*** @ param args */public static void main (String [] args) {System. out. println ("client-> to: hello world! The greatest program! "); Try {clienSocket = new Socket (TCP_IP, TCP_PORT); Recv readthread = new Recv (clienSocket); new Thread (readthread," receive "). start (); Send sendthread = new Send (clienSocket, "Client"); new Thread (sendthread, "Send "). start ();} catch (UnknownHostException e) {System. out. println (e. getMessage ();} catch (IOException e) {System. out. println (e. getMessage ());}}}