Java Socket 定時讀取數據

//客戶端：
package com.socket.example;

import java.io.*;
import java.net.*;
import java.util.TimerTask;

/**
 * 
 * @author li_yf
 * RemoteFileClient
 *
 */
public class RemoteFileClient extends TimerTask {
	protected String hostIp;
	protected int hostPort;
	protected BufferedReader socketReader;
	protected PrintWriter socketWriter;

	public RemoteFileClient(String aHostIp, int aHostPort) {
		hostIp = aHostIp;
		hostPort = aHostPort;
	}

	public void setUpConnection() {
		try {
			Socket client = new Socket(hostIp, hostPort);
			socketReader = new BufferedReader(new InputStreamReader(client
					.getInputStream()));
			socketWriter = new PrintWriter(client.getOutputStream(),true);
		} catch (UnknownHostException e) {
			System.out
					.println("Error setting up socket connection: unknown host at "
							+ hostIp + ":" + hostPort);
		} catch (IOException e) {
			System.out.println("Error setting up socket connection: " + e);
		}
	}

	public String getFile(String fileNameToGet) {
		StringBuffer fileLines = new StringBuffer();
		try {
			socketWriter.println(fileNameToGet);
			socketWriter.flush();
			String line = null;
			while ((line = socketReader.readLine()) != null)
				fileLines.append(line + "\n");
		} catch (IOException e) {
			System.out.println("Error reading from file: " + fileNameToGet);
		}
		return fileLines.toString();
	}

	public void tearDownConnection() {
		try {
			socketWriter.close();
			socketReader.close();
		} catch (IOException e) {
			System.out.println("Error tearing down socket connection: " + e);
		}
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		RemoteFileClient remoteFileClient = new RemoteFileClient("192.168.0.6",
				139);
		remoteFileClient.setUpConnection();
		String fileContents = remoteFileClient.getFile("E:\\RemoteFile.txt");
		remoteFileClient.tearDownConnection();
		//String name=new String ((fileContents.getBytes("iso-8859-1"),);
		System.out.println("讀取的遠程內容："+fileContents);

	}
}


//服務器端：

package com.socket.example;

import java.io.*;
import java.net.*;

/**
 * 
 * @author li_yf
 * RemoteFileServer
 *
 */
public class RemoteFileServer {
	protected int listenPort = 139;

	public static void main(String[] args) {
		RemoteFileServer server = new RemoteFileServer();
		server.acceptConnections();
	}

	public void acceptConnections() {
		try {
			ServerSocket server = new ServerSocket(listenPort);
			Socket incomingConnection = null;
			while (true) {
				incomingConnection = server.accept();
				handleConnection(incomingConnection);
			}
		} catch (BindException e) {
			System.out.println("Unable to bind to port " + listenPort);
		} catch (IOException e) {
			System.out.println("Unable to instantiate a ServerSocket on port: "
					+ listenPort);
		}
	}

	public void handleConnection(Socket incomingConnection) {
		try {
			OutputStream outputToSocket = incomingConnection.getOutputStream();
			InputStream inputFromSocket = incomingConnection.getInputStream();
			BufferedReader streamReader = new BufferedReader(
					new InputStreamReader(inputFromSocket));
			FileReader fileReader = new FileReader(new File(streamReader
					.readLine()));
			BufferedReader bufferedFileReader = new BufferedReader(fileReader);
			PrintWriter streamWriter = new PrintWriter(incomingConnection
					.getOutputStream());
			String line = null;
			while ((line = bufferedFileReader.readLine()) != null) {
				streamWriter.println(line);
			}
			fileReader.close();
			streamWriter.close();
			streamReader.close();
		} catch (Exception e) {
			System.out.println("Error handling a client: " + e);
		}
	}
}


//main方法：
package com.socket.example;

import java.util.Timer;

public class TimerTaskClass {
	private static int TIME_INTERVAL = 10 * 1000;
	private static String SOCKET_SERVER = "192.168.0.6";
	private static int SOCKET_PORT = 139;

	public static void main(String args[]) {
		Timer timer = new Timer();
		timer.schedule(new RemoteFileClient(SOCKET_SERVER, SOCKET_PORT),
				1 * 1000, TIME_INTERVAL);
	}

}