Socket的使用

一.服务端

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class SocketServer {

	public static void main(String[] args) {
		SocketServer socketServer = new SocketServer();
		socketServer.startServer();
	}
	
	public void startServer() {
		ServerSocket serverSocket = null;
		Socket socket = null;
		try {
			serverSocket = new ServerSocket(9898);
			System.out.println("server started..");
			while (true) {
				socket = serverSocket.accept();
				manageConnection(socket);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				socket.close();
				serverSocket.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	
	public void manageConnection(final Socket socket) {
		new Thread(new Runnable() {
			@Override
			public void run() {
				BufferedReader reader = null;
				BufferedWriter writer =null;
				try {
					System.out.println("client " + socket.hashCode() + " connedted");
					reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
					writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
					String receivedMsg;
					while ((receivedMsg = reader.readLine()) != null) {
						System.out.println("client " + socket.hashCode() + ": " + receivedMsg);
						writer.write("server reply: " + receivedMsg + "\n");
						writer.flush();
					}
				} catch (IOException e) {
					e.printStackTrace();
				} finally {
					try {
						reader.close();
						writer.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			}
		}).start();
	}

}

二.客户端

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

public class SocketClient {

	public static void main(String[] args) {
		SocketClient client = new SocketClient();
		client.start();
	}
	
	public void start() {
		BufferedReader inputReader = null;
		BufferedReader reader = null;
		BufferedWriter writer = null;
		Socket socket = null;
		try {
			socket = new Socket("127.0.0.1", 9898);
			reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
			writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
			inputReader = new BufferedReader(new InputStreamReader(System.in));
			startServerReplyListener(reader);
			String inputContent;
			int count = 0;
			while (!(inputContent = inputReader.readLine()).equals("bye")) {
				writer.write(inputContent);
				if (count % 2 ==0) {
					writer.write("\n");
				}
				count++;
				writer.flush();
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				reader.close();
				writer.close();
				inputReader.close();
				socket.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	
	public void startServerReplyListener(final BufferedReader reader) {
		new Thread(new Runnable() {
			@Override
			public void run() {
				try {
					String response;
					while ((response = reader.readLine()) != null) {
						System.out.println(response);
					}
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}).start();
	}

}