InetSocketAddress的使用

使用NIO的InetSocketAddress建立网络通信非常方便，包括服务端和客户端：

服务端创建一个ServerSocketChannel，等待客户端发起链接请求，下面的例子比较简单，开启服务端等待客户端请求，接收到客户端的连接后，给客户端发送数据。

 

Server段代码：

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;

public class Server2
{
    public static void main(String[] args) throws IOException
    {
        InetSocketAddress socketAddress = new InetSocketAddress("localhost", 5555);
        
        ServerSocketChannel server = ServerSocketChannel.open();
        
        server.socket().bind(socketAddress);
        
        SocketChannel channel = null;
        
        while((channel = server.accept()) != null)
        {
            OutputStream out = channel.socket().getOutputStream();
            
            while(true)
            {
                out.write("hello world !!".getBytes());
                
                out.flush();
            }
        }
    }
}

 

client段代码：

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SocketChannel;

public class Client2
{
    public static void main(String[] args) throws IOException, InterruptedException
    {
        InetSocketAddress socketAddress = new InetSocketAddress("localhost", 5555);
        SocketChannel channel = SocketChannel.open(socketAddress);
        channel.configureBlocking(false);
        
        ByteBuffer buffer = ByteBuffer.allocate(20);
        
        while(true)
        {
            int n = channel.read(buffer);
            
            System.out.println(n);
            
            System.out.println("receive data : " + new String(buffer.array(), 0, n));
            
            Thread.sleep(1000);
            
            buffer.flip();
        }
    }
}