Java通信编程之Socket入门

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Java通信编程之Socket入门

/**
 * @(#)ClientTest.java
 *
 * 客户端
 * @author 
 * @version 1.00 2008/8/2
 */
import java.net.Socket;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.PrintWriter;
public class ClientTest {
    private Socket socket;
    BufferedReader in;
    PrintWriter out;
    
    public ClientTest() {
        try{
            System.out.println("Try to connect to 127.0.0.1:10000");
            //向服务器发出连接请求 
            socket=new Socket("127.0.0.1",10000);
            System.out.println("The Server Connected!");   
            
            System.out.println("Please enter some characters:");
            //读取用户输入信息 
            BufferedReader line=new BufferedReader(new InputStreamReader(System.in));
            
            //输出从服务器端获得的信息 
            out=new PrintWriter(socket.getOutputStream(),true);
            out.println(line.readLine());
            
            //读取服务器端信息 
            in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
            System.out.println(in.readLine());
            
            out.close();
            in.close();
            socket.close();    
        }catch(IOException ex){
            System.out.println(ex.getMessage());
        }
    }
    
    public static void main(String[] args){
        new ClientTest();
    }
    
}

/**
 * @(#)ServerSocketTest.java
 *
 * 服务器端
 * @author 
 * @version 1.00 2008/8/2
 */
import java.net.ServerSocket;
import java.net.Socket;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
public class ServerSocketTest {
    private ServerSocket ss;
    private Socket socket;
    private BufferedReader in;
    private PrintWriter out;
    public ServerSocketTest() {
        try{
            ss=new ServerSocket(10000);//建立服务器，监听... 
            System.out.println("Server is listening at 10000...");
            while(true){
                socket=ss.accept();
                //获取客户端IP地址 
                String remoteIP=socket.getInetAddress().getHostAddress();
                //获取客户端连接端口 
                String remotePort=":"+socket.getLocalPort();
                System.out.println("A clinet come in!IP:"+remoteIP+remotePort);
                
                //读取客户端输入 
                in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
                String line=in.readLine();
                System.out.println("Client send is:"+line);
                
                //将服务器端信息发往客户端 
                out=new PrintWriter(socket.getOutputStream(),true);
                out.println("Your Message Received!");
                
                out.close();
                in.close();
                socket.close();
            }
        }catch(IOException ex){
            System.out.println(ex.getCause());
        }
    }
    
    public static void main (String[] args) {
        new ServerSocketTest();
    }  
}