NIOClient.java

package com.bruis.learnnetty.nio;

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

/**
 * @author LuoHaiYang
 */
public class NIOClient {

    public static void main(String[] args) throws Exception {

        // 获取一个SocketChannel
        SocketChannel socketChannel = SocketChannel.open();

        // 设置非阻塞
        socketChannel.configureBlocking(false);

        // 提供服务端的ip和端口
        InetSocketAddress inetSocketAddress = new InetSocketAddress("127.0.0.1", 6666);

        // 连接服务器
        if (!socketChannel.connect(inetSocketAddress)) {
             while (!socketChannel.finishConnect()) {
                 System.out.println("因为连接需要时间， 客户端不会阻塞，可以做其他工作了...");
             }
        }

        // 如果连接成功，就发送数据
        String str = "hello, bruis~";

        // 把字节数组包装成buffer
        ByteBuffer buffer = ByteBuffer.wrap(str.getBytes());

        // 发送数据，将buffer数据写入channel
        socketChannel.write(buffer);

        System.in.read();
    }
}