【Java学习笔记】TCP客户端/服务器端

作者：gnuhpc
出处：http://www.cnblogs.com/gnuhpc/

客户端：

import java.net.Socket;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.io.OutputStream;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.IOException;
public class TcpClient {
    public static void main(String[] args) throws IOException {
        try {
            byte a[] = { 127,0,0,1 };
            InetAddress address = InetAddress.getByAddress(a);
            Socket socket = new Socket(address,9876);
            OutputStream os = socket.getOutputStream();
            PrintWriter out = new PrintWriter(os,true);
            InputStream is = socket.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader in = new BufferedReader(isr);
            String line;
            line = "A line sent by the client";
            out.println(line);
            line = in.readLine();
            System.out.println("client got: " + line);
            out.close();
            in.close();
            socket.close();
        } catch (UnknownHostException e) {
            System.out.println(e);
        } catch (IOException e) {
            System.out.println(e);
        }
    }
}

服务器端：

import java.net.ServerSocket;
import java.net.Socket;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
public class TcpServer {
    public static void main(String[] args) {
        try {
            ServerSocket serverSocket = new ServerSocket(9876);
            Socket socket = serverSocket.accept();
/*和Client一样了*/
            InputStream is = socket.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader in = new BufferedReader(isr);
            OutputStream os = socket.getOutputStream();
            PrintWriter out = new PrintWriter(os,true);
            String line;
            while((line = in.readLine()) != null) {
                 System.out.println("server got: " + line);
                 line = "A line sent by the server";
                 out.println(line);
            }
            out.close();
            in.close();
            socket.close();
            serverSocket.close();
        } catch (IOException e) {
            System.out.println(e);
            System.exit(1);
        }
    }
}

作者：gnuhpc
出处：http://www.cnblogs.com/gnuhpc/