利用Java怎么样实现网络通信功能
利用Java怎么样实现网络通信功能?相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
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方式一:同步阻塞方式(BIO):
服务器端(Server):
package com.ietree.basicskill.socket.mode1; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; /** * 服务端 */ public class Server { // 端口号 final static int PORT = 8765; public static void main(String[] args) { ServerSocket server = null; try { server = new ServerSocket(PORT); System.out.println("Server start......"); // 进行阻塞 Socket socket = server.accept(); // 创建一个程序执行客户端的任务 new Thread(new ServerHandler(socket)).start(); } catch (IOException e) { e.printStackTrace(); } finally { if(server != null){ try { server.close(); } catch (IOException e) { e.printStackTrace(); } } server = null; } } }
采用多线程来处理接收到的请求(ServerHandler):
package com.ietree.basicskill.socket.mode1; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.Socket; public class ServerHandler implements Runnable { private Socket socket; public ServerHandler(Socket socket) { this.socket = socket; } @Override public void run() { BufferedReader in = null; PrintWriter out = null; try { in = new BufferedReader(new InputStreamReader(this.socket.getInputStream())); out = new PrintWriter(this.socket.getOutputStream(), true); String body = null; while (true) { body = in.readLine(); if(body == null){ break; } System.out.println("Server: " + body); out.println("服务器端回送响应的数据。"); } } catch (Exception e) { e.printStackTrace(); } finally { if(in != null){ try { in.close(); } catch (IOException e) { e.printStackTrace(); } } if(out != null){ try { out.close(); } catch (Exception e) { e.printStackTrace(); } } if(socket != null){ try { socket.close(); } catch (IOException e) { e.printStackTrace(); } } socket = null; } } }
客户端(Client):
package com.ietree.basicskill.socket.mode1; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.Socket; /** * 客户端 */ public class Client { final static String ADDRESS = "127.0.0.1"; final static int PORT = 8765; public static void main(String[] args) { Socket socket = null; BufferedReader in = null; PrintWriter out = null; try { socket = new Socket(ADDRESS, PORT); in = new BufferedReader(new InputStreamReader(socket.getInputStream())); out = new PrintWriter(socket.getOutputStream(), true); // 向服务器端发送数据 out.println("接收到客户端的请求数据......"); String response = in.readLine(); System.out.println("Client: " + response); } catch (Exception e) { e.printStackTrace(); } finally { if(in != null){ try { in.close(); } catch (IOException e) { e.printStackTrace(); } } if(out != null){ try { out.close(); } catch (Exception e) { e.printStackTrace(); } } if(socket != null){ try { socket.close(); } catch (IOException e) { e.printStackTrace(); } } socket = null; } } }
程序输出:
Server:
Server start...... Server: 接收到客户端的请求数据......
Client:
Client: 服务器端回送响应的数据。
同步非阻塞(NIO)
异步非阻塞(AIO)
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