模拟BS服务器分析与模拟BS服务器代码实现

模拟BS服务器分析

 

 模拟BS服务器代码实现

package DemoThreadPool01;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class TCP {
    public static void main(String[] args) throws IOException {
        //创建服务器ServerSocket对象
        ServerSocket server = new ServerSocket(8080);
        while (true){
            //使用accept获取Socket
            Socket sc = server.accept();

            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        //获取InputStream网络字节输入流
                        InputStream is = sc.getInputStream();

                        if (is != null) {
                            //创建缓冲流 , 转换为字符缓冲输入流
                            BufferedReader bw = new BufferedReader(new InputStreamReader(is));
                            //GET /IOTest/web/index.html HTTP/1.1
                            String line;
                            line = bw.readLine();
                            //分割路劲
                            String[] path = line.split(" ");
                            //获取路径    IOTest/web/index.html
                            String filename = path[1].substring(1);  //filename = IOTest/web/index.html
                            System.out.println("filename:" + filename);
                            //创建本地字节输入流 FileInputStream
                            FileInputStream fis = new FileInputStream(filename);

                            OutputStream os = sc.getOutputStream();

                            //写入Http响应
                            os.write("HTTP/1.1 200 OK\r\n".getBytes());
                            os.write("Content-Type:text/html\r\n".getBytes());
                            //必须要写入空行，否则浏览器不解析
                            os.write("\r\n".getBytes());
                            //一读一写浏览器

                            int len = 0;
                            byte[] bytes = new byte[1024];
                            while ((len = fis.read(bytes)) != -1) {
                                //写入服务器
                                os.write(bytes, 0, len);
                            }
                            fis.close();
                            sc.close();
                        }

                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }

    }
}