Question

我正在编写网络服务器：

import java.net.ServerSocket;
import java.net.Socket;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;

public class HttpServer {

    public static void main(String[] args) throws Throwable {
        //http://localhost:3000
        ServerSocket ss = new ServerSocket(3000);

        while (true) {
            //Waiting for socket
            Socket s = ss.accept();

            System.out.println("Client accepted");



            //The main process
            new SocketProcessor(s, ss).start();
        }
    }

    private static class SocketProcessor implements Runnable {
        private Thread t;
        private Socket s;
        private InputStream is;
        private OutputStream os;


        private SocketProcessor(Socket s, ServerSocket ss) throws Throwable {
            t = new Thread(this, "Server Thread");
            this.s = s;
            this.is = s.getInputStream();
            this.os = s.getOutputStream();

        }

        public void run() {
            try {
                readInputHeaders();
                writeResponse("<html><body><h1>Hello</h1></body></html>");


            } catch (Throwable t) {
                /*do nothing*/
            } finally {
                try {
                    s.close();
                } catch (Throwable t) {

                }
            }
            System.out.println("Client processing finished");
        }


        public void start() {
            t.start();
        }

        private void writeResponse(String s) throws Throwable {
            String response = "HTTP/1.1 200 OK\r\n" +
                    "Server: Server\r\n" +
                    "Content-Type: text/html\r\n" +
                    "Content-Length: " + s.length() + "\r\n" +
                    "Connection: close\r\n\r\n";
            String result = response + s;
            os.write(result.getBytes());
            os.flush();
        }

        private void readInputHeaders() throws Throwable {
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            while (true) {
                int a = br.read();
                System.out.print((char)a);
                if (a==-1) {
                    break;
                }
            }
        }
    }
}

但我读书时遇到了麻烦。这种方法需要花费太多时间：

 private void readInputHeaders() throws Throwable {
                BufferedReader br = new BufferedReader(new InputStreamReader(is));
                while (true) {
                    int a = br.read();
                    System.out.print((char)a);
                    if (a==-1) {
                        break;
                    }
                }
            }

它返回标题和查询字符串，但它会冻结我的网络服务器。怎么了？

Answer 1

您需要阅读并实施HTTP协议，您需要为其阅读RFC。像这样的猜测是行不通的。您收集请求的方法并没有开始有效。 EOS不能跟随请求，否则您无法写入响应。您需要查看内容长度标题，分块编码等。

读取HTTP InputStream麻烦

1 个答案: