网络编程练习字符串反转

我就是我 2022-06-15 01:30 194阅读 0赞

## 客户端向服务器写字符串(键盘录入), ##

## 服务器(多线程)将字符串反转后写回, ##

## 客户端再次读取到是反转后的字符串 ##

服务端

public class str_server {
    
    	/**
    	 * @param args
    	 * @throws IOException 
    	 */
    	public static void main(String[] args) throws IOException {
    		ServerSocket server = new ServerSocket(54321);
    		System.out.println("服务器启动,绑定54321端口");
    		
    		while(true) {
    			final Socket socket = server.accept();	//接受客户端的请求
    			
    			new Thread() {					//开启一条线程
    				public void run() {
    					try {
    						BufferedReader br = new BufferedReader(
    								new InputStreamReader(socket.getInputStream()));//获取输入流
    						PrintStream ps = new PrintStream(socket.getOutputStream());//获取输出流
    						
    						String line = br.readLine();		//将客户端写过来的数据读取出来
    						line = new StringBuilder(line).reverse().toString();//链式编程
    						ps.println(line);					//反转后写回去
    						
    						socket.close();
    					} catch (IOException e) {						
    			
    						e.printStackTrace();
    					}
    				}
    			}.start();
    		}
    	}
    
    }

客户端

public class str_client {
    
    	/**
    	 * @throws IOException 
    	 * @throws UnknownHostException 
    	 */
    	public static void main(String[] args) throws UnknownHostException, IOException {
    		Scanner sc = new Scanner(System.in);	//创建键盘录入对象
    		Socket socket = new Socket("127.0.0.1", 54321);	//创建客户端,指定ip地址和端口号
    		
    		BufferedReader br = new BufferedReader(
    				new InputStreamReader(socket.getInputStream()));//获取输入流
    		PrintStream ps = new PrintStream(socket.getOutputStream());//获取输出流
    		
    		ps.println(sc.nextLine());	//将字符串写到服务器去
    		System.out.println(br.readLine()); //将反转后的结果读出来
    		
    		socket.close();
    	}
    
    }