Java Socket长链接 异步读写 实例

1.Server端

package com.xxx.internet.server;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

import com.xxx.internet.util.DataProcessUtil;

/**
 * @ClassName SocketServer
 * @Description 发布一个Socket Server端服务
 * @Author weizhi2018
 * @Date 2013-8-11 下午10:50:39
 * 
 */

public class SocketServerLong {

	public static void main(String[] args) {

		ServerSocket serverSocket = null;
		Socket socket = null;
		DataInputStream reader = null;
		DataOutputStream writer = null;

		String result;
		// 监听端口号
		int port = 8780;

		// 建立连接
		try {
			serverSocket = new ServerSocket(port);
			System.out.println("启动监听服务:" + port);
			socket = serverSocket.accept();
			System.out.println("建立连接，开始传输数据...");
		} catch (IOException e1) {
			e1.printStackTrace();
		}
		
		while (true) {
			try {
				// 接收客户端发送内容
				reader = new DataInputStream(socket.getInputStream());
				byte[] buff = new byte[1024];
				reader.read(buff);
				String recvStr = new String(buff, "UTF-8").trim();
				// 输出
				System.out.println("接收客户端请求内容为：" + recvStr);

				DataProcessUtil dataProcess = new DataProcessUtil(recvStr);

				result = dataProcess.dealParam();
				// 向客户端发送反馈内容
				writer = new DataOutputStream(socket.getOutputStream());
				System.out.println("服务端返回处理结果：" + result);
				byte[] bb = result.getBytes();
				writer.write(bb);
				writer.flush();
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				// 关闭输入输出流，关闭连接
//				try {
//					writer.close();
//				} catch (Exception e) {
//					e.printStackTrace();
//				}
//				try {
//					reader.close();
//				} catch (Exception e) {
//					e.printStackTrace();
//				}
//				try {
//					socket.close();
//				} catch (Exception e) {
//					e.printStackTrace();
//				}
//				System.out.println("服务结束，断开连接.");
			}
		}
	}
}

2.Client 端

package com.xxx.internet.client;

public class SocketMain {

	/**
	 * @Title main
	 * @Description 启动两个线程，一个用来定时发送数据，一个用来定时接收数据
	 * @Author weizhi2018
	 * @param @param args
	 * @return void
	 * @throws
	 */

	public static void main(String[] args) {
		String ip = "127.0.0.1";
		int port = 8780;
		ConnSocket socket = null;
		socket = new ConnSocket(ip, port);
		System.out.println("IP:" + ip + ",端口:" + port + ",建立连接...");

		RecvThd recvThd = new RecvThd(socket);
		SendThd sendThd = new SendThd(socket);
		
		new Thread(sendThd).start();
		new Thread(recvThd).start();
	}
}

3.发送数据的线程

package com.xxx.internet.client;

public class SendThd implements Runnable {

	private ConnSocket socket = null;

	public SendThd(ConnSocket socket) {
		this.socket = socket;
	}
	/*
	 * @see java.lang.Runnable#run()
	 */
	@Override
	public void run() {
		String sendData = "abcdefghijklmnopqrsguvwxyz1234567890';[]=-/,.~!@#$%^&*()_+<>?:";
		while (true) {
			System.out.println("-----");
			try {
				if (socket.getStatus()) {
					socket.send(sendData);
					System.out.println("发送数据:" + sendData);
				}
				Thread.sleep(3000);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

}

4.接收返回结果的线程

package com.xxx.internet.client;

public class RecvThd implements Runnable {

	private ConnSocket socket = null;

	public RecvThd(ConnSocket socket) {
		this.socket = socket;
	}

	/*
	 * @see java.lang.Runnable#run()
	 */
	@Override
	public void run() {
		while (true) {
			System.out.println("-----");
			try {
				String result = null;
				if (socket.getStatus()) {
					result = socket.recv();
					System.out.println("接收数据:" + result);
				}
				else {
					Thread.sleep(30);
					if (socket.getStatus()) {
						result = socket.recv();
						System.out.println("接收数据:" + result);
					}
				}
				
				Thread.sleep(3000);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}


}