简单socket服务器编程

package socket;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

/**
 * @author hanli
 *
 */
public class SocketTest {
	public static void main(String[] args) throws UnknownHostException, IOException {
		try(ServerSocket s = new ServerSocket(8189)) {
			s.setSoTimeout(100);                   //建立一个8189端口的服务器

			try (Socket incoming = s.accept()){    //等待客户端连接并接受
				InputStream inStream = incoming.getInputStream();
				OutputStream outStream = incoming.getOutputStream();

				try(Scanner in = new Scanner(inStream,"UTF-8")){   //构建一个扫描器，产生从输入流扫描到的值
					PrintWriter out = new PrintWriter(new OutputStreamWriter(outStream,"UTF-8"),true );
					out.print("hello");

					boolean done = false;

					while (!done && in.hasNextLine()){
						String line = in.nextLine();
						out.print(line);

						if(line.trim().equals(" bey "))
							done = true;
					}
				}
			}
		}
	}
}