J032_实现简易版的B/S架构

一、需求描述

实现简易版的B/S架构

1.1 Server

package com.itheima.tcp4;import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;public class Server {//实现简易版的B/S架构public static void main(String[] args) throws Exception {System.out.println("----------服务端启动----------");//创建serversocket对象，同时为服务端程序注册接口ServerSocket serverSocket = new ServerSocket(8080);while (true) {//使用serversocket对象调用accept方法，等待客户端连接Socket socket = serverSocket.accept();System.out.println("有人上线了：" + socket.getRemoteSocketAddress());//与客户端建立连接后，将任务交给独立的线程来处理new ServerReaderThread(socket).start();}}
}

1.2 ServerReaderThread

package com.itheima.tcp4;import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;public class ServerReaderThread extends Thread {private Socket socket;public ServerReaderThread(Socket socket) {this.socket = socket;}@Overridepublic void run() {//响应一个网页内容：“黑马程序员”给浏览器展示try {OutputStream os = socket.getOutputStream();//将字节输出流包装成打印流PrintStream ps = new PrintStream(os);ps.println("HTTP/1.1 200 OK");ps.println("Content-Type:text/html;charset=UTF-8");ps.println();ps.println("黑马程序员");ps.close();socket.close();} catch (Exception e) {throw new RuntimeException(e);}}
}

1.3 使用线程池进行优化

由于在高并发的情况下，创建太多线程很容易使服务端挂掉，所以用线程池优化B/S架构

1.3.1 Server

package com.itheima.tcp4;import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;public class Server {//实现简易版的B/S架构public static void main(String[] args) throws Exception {System.out.println("----------服务端启动----------");//创建serversocket对象，同时为服务端程序注册接口ServerSocket serverSocket = new ServerSocket(8080);//创建一个线程池，负责处理通信管道的任务ThreadPoolExecutor pool = new ThreadPoolExecutor(16 * 2,16 * 2,0, TimeUnit.SECONDS,new ArrayBlockingQueue<>(8), Executors.defaultThreadFactory(),new ThreadPoolExecutor.AbortPolicy());while (true) {//使用serversocket对象调用accept方法，等待客户端连接Socket socket = serverSocket.accept();System.out.println("有人上线了：" + socket.getRemoteSocketAddress());//把这个客户端对应的socket通信管道，交给线程池里面的线程负责处理pool.execute(new ServerReaderRunnable(socket));}}
}

1.3.2 ServerReaderRunnable

package com.itheima.tcp4;import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;public class ServerReaderRunnable implements Runnable{private Socket socket;public ServerReaderRunnable(Socket socket){this.socket = socket;}@Overridepublic void run() {try {OutputStream os = socket.getOutputStream();//将字节输出流包装成打印流PrintStream ps = new PrintStream(os);ps.println("HTTP/1.1 200 OK");ps.println("Content-Type:text/html;charset=UTF-8");ps.println();ps.println("黑马程序员");ps.close();socket.close();} catch (Exception e) {throw new RuntimeException(e);}}
}