做的最好的快餐网站,成都最新新闻事件今天,做网站二级域名随便用吗,wordpress英文改为中文很多时候在javaweb项目中我们需要用到Socket通信来实现功能#xff0c;在web中使用Socket我们需要建立一个监听程序#xff0c;在程序启动时#xff0c;启动socket监听。我们的应用场景是在java项目中#xff0c;需要外接如一个硬件设备#xff0c;通过tcp通信#xff0c…很多时候在javaweb项目中我们需要用到Socket通信来实现功能在web中使用Socket我们需要建立一个监听程序在程序启动时启动socket监听。我们的应用场景是在java项目中需要外接如一个硬件设备通过tcp通信获取设备传上来的数据并对数据做回应。先看一下web的监听代码import javax.servlet.ServletContextEvent;import javax.servlet.ServletContextListener;public class AttendSocetListener implements ServletContextListener{private SocketThread socketThread;public void contextDestroyed(ServletContextEvent arg) {if(null!socketThread !socketThread.isInterrupted()){socketThread.closeSocketServer();socketThread.interrupt();}}Overridepublic void contextInitialized(ServletContextEvent arg) {// TODO Auto-generated method stubif(nullsocketThread){//新建线程类socketThreadnew SocketThread(null);//启动线程socketThread.start();}}}创建线程import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;import java.util.ArrayList;import java.util.List;public class SocketThread extends Thread{private ServerSocket serverSocket null;public SocketThread(ServerSocket serverScoket){try {if(null serverSocket){this.serverSocket new ServerSocket();System.out.println(socket start);}} catch (Exception e) {System.out.println(SocketThread创建socket服务出错);e.printStackTrace();}}public void run(){while(true){try {if(serverSocketnull){break;}else if(serverSocket.isClosed()){break;}Socket socket serverSocket.accept();if(null ! socket !socket.isClosed()){//处理接受的数据Thread t new Thread(new SocketOperate(socket));t.start();}else{break;}}catch (Exception e) {System.out.println(SocketThread创建socket服务出错);e.printStackTrace();}}}public void closeSocketServer(){try {if(null!serverSocket !serverSocket.isClosed()){serverSocket.close();}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}处理接受到的数据import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.Socket;public class SocketOperate implements Runnable {private Socket socket;//该线程所处理的Socket所对应的输入流BufferedReader br null;String str null;String content null;InputStreamReader readernull;public SocketOperate(Socket socket) throws IOException{this.socket socket;reader new InputStreamReader(this.socket.getInputStream(),utf-);br new BufferedReader(reader);}Overridepublic void run(){try{// 采用循环不断从Socket中读取客户端发送过来的数据while (true){content readFromClient();System.out.println(content);if (content null){break;}OutputStream os socket.getOutputStream();os.write((RES, OK,, ,# \n).getBytes(utf-));os.flush();}}catch (IOException e){e.printStackTrace();}}//定义读取客户端数据的方法private String readFromClient(){try{str br.readLine();return str;}//如果捕捉到异常表明该Socket对应的客户端已经关闭catch (IOException e){try {br.close();reader.close();socket.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return null;}}客户端代码packageimport java.io.*;import java.net.*;public class TalkClient {public static void main(String args[]) throws UnknownHostException, IOException {Socket socketnew Socket(...,);PrintWriter osnew PrintWriter(socket.getOutputStream());BufferedReader isnew BufferedReader(new InputStreamReader(socket.getInputStream()));int i;while(socket.isConnected()){os.print(BEAT,,,,.,,#\n);os.flush();System.out.println(Client:i);System.out.println(Server:is.readLine());i;}//继续循环os.close(); //关闭Socket输出流is.close(); //关闭Socket输入流socket.close(); //关闭Socket}}以上所述是小编给大家介绍的Java Web项目中使用Socket通信多线程、长连接的方法希望对大家有所帮助
