simplechatserver.java

简单通信程序

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

public class SimpleChatServer {

	public static final int DEFAULT_PORT = 8878;

	public static void main(String[] args) {
		ServerSocket server = null;
		try {
			server = new ServerSocket( DEFAULT_PORT );
			Socket client = server.accept();
			Scanner clientInput = new Scanner( client.getInputStream() );
			PrintWriter serverOutput = new PrintWriter( client.getOutputStream() );
			while ( true ) {
				String clientMessage = clientInput.nextLine();
				System.out.println( "message from client:" + clientMessage );
				serverOutput.println( "message received" );
				serverOutput.flush();
				if ( clientMessage.equals("exit") ) {
					break;
				}
			}
		} catch( IOException e ) {
			e.printStackTrace();
		} finally {
			try {
				server.close();
			} catch( IOException e ) {
				e.printStackTrace();
			}
		}
	}
}