client.java

利用Java Socket写的一段通讯协议

package com.ict.netcom2.trash;

import java.net.*;
import java.io.*;

public class Client {
    Socket skt;
    BufferedReader br;
    PrintWriter pw;

    public Client(String ip, int port) {
        try {
            skt = new Socket(InetAddress.getByName(ip), port);
            br = new BufferedReader(new InputStreamReader(skt.getInputStream()));
            pw = new PrintWriter(skt.getOutputStream());
        }
        catch(Exception e) {
        e.printStackTrace();}
    }

    public void send(String str) {
        pw.println(str);
        pw.flush();
    }

    public String receive() {
        String str = null;
        try {
            str = br.readLine();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        return str;
    }

    public void disconnect() {
        try {
            pw.println("end");
            pw.flush();
            pw.close();
            br.close();
            skt.close();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] str) {
        Client c = new Client("10.21.2.30", 9090);
        while(true) {
            c.receive();
        }
    }

}