无锡找一个java软件培训学校多少钱

什么是BIO？

同步阻塞式IO，服务端创建一个ServerSocket，然后客户端用一个Socket去连接那个ServerSocket，然后ServerSocket接收到一个Socket的连接请求就创建一个Socket和一个线程去跟那个Socket进行通信。

public class BioServer { public static void main(String[] args) {

// 服务端开启一个端口进行监听 int port = 8080; ServerSocket serverSocket = null;

//服务端 Socket socket;

//客户端 InputStream in = null; OutputStream out = null; try { serverSocket = ew ServerSocket(port);

//通过构造函数创建ServerSocket，指定监听端口，如果端口合法且空闲，服务器就会监听成功 // 通过无限循环监听客户端连接，如果没有客户端接入，则会阻塞在accept操作 while (true) { System.out.println("Waiting for a new Socket to establish" + " ," + new Date().toString()); socket = serverSocket.accept();//阻塞 三次握手 in = socket.getInputStream(); byte[] buffer = ew byte[1024]; int length = 0; while ((length = in.read(buffer)) > 0)

{//阻塞 System.out.println("input is:" + new String(buffer, 0, length) + " ," + new Date().toString()); out = socket.getOutputStream(); out.write("success".getBytes()); System.out.println("Server end" + " ," + new Date().toString()); } } } catch (Exception e) { e.printStackTrace(); } finally { // 必要的清理活动 if (serverSocket ！= null) { try { serverSocket.close(); } catch (IOException e) { e.printStackTrace(); } } if (in ！= null) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } if (out ！= null) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } }}