0 
package WebServer;
import java.io.*;
import java.util.*;
import java.net.*;

final public class WebServer {
    ServerSocket server;
    public void start()throws Exception{
        server=new ServerSocket(5000);
        Socket client;
        while(true){
            client=server.accept();
            Thread t1=new Thread(new Handlehttp(client));
            t1.start();
        }
    }
    public static void main(String[] args) {
        try{
        new WebServer().start();
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}
final class Handlehttp implements Runnable{
    Socket s;
    DataOutputStream ds;
    BufferedReader br;
    public Handlehttp(Socket s) throws Exception {
        this.s=s;
        ds=new DataOutputStream(s.getOutputStream());
        br=new BufferedReader(new InputStreamReader(s.getInputStream()));
    }
    private synchronized void httprequest()throws Exception{
        String rqln,var;
        rqln=br.readLine();
        System.out.println("Port number : "+s.getPort());
        if(rqln!=null)
        System.out.println(rqln);
        while((var=br.readLine())!=null){
            System.out.println(var);
        }
    }
    private synchronized void httpreponse()throws Exception{
        String var,fileName;
        fileName="D:/file.htm";
        FileInputStream fis=new FileInputStream(fileName);
        int var1;
        var="HTTP/1.0 200 OK\r\n";
        var=var+"Connection: keep-alive\r\n";
        var=var+"Server : First\r\n";
        var=var+"Content-Type: text/html\r\n";
        var=var+"\r\n";
        ds.writeBytes(var);
        while((var1=fis.read())!=-1){
        ds.write(var1);
        }
    }

    @Override
    public void run() {
        try{
        httprequest();
        httpreponse();
        //s.close();
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

我在 ds.writeBytes 收到一个套接字软件错误没有发生其他异常我猜套接字已关闭。我能够看到来自浏览器的 HTTP 请求，但仍然没有运气向浏览器打印任何排序信息

顺便说一句，我确实提出了关于多线程服务器的先前问题，但由于先前的问题已经解决（可能已解决）已经开始新的关于套接字错误的问题

我得到的例外是

Port number : 10225
GET /file.htm HTTP/1.1
Host: localhost:5000
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.76 Safari/537.36
DNT: 1
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-GB,en-US;q=0.8,en;q=0.6

Port number : 10226

java.net.SocketException: Software caused connection abort: socket write error
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:132)
    at java.io.DataOutputStream.writeBytes(DataOutputStream.java:276)
    at WebServer.Handlehttp.httpreponse(WebServer.java:57)
    at WebServer.Handlehttp.run(WebServer.java:82)
    at java.lang.Thread.run(Thread.java:722)
4

1 回答 1

1

当对等方关闭连接时，readLine() 返回 null。因此，您不能在之后写入它（除非在 HTTP 中不会发生关闭的情况）。如果您正在实现 HTTP，则需要阅读 HTTP RFC 以了解如何正确执行。猜测不够好。请注意，您收到的请求是 HTTP 1.1，并且它包含一个 Connection: keep-alive 标头并且没有 Content-Length 标头，这意味着在标头之后没有要读取的请求正文。

于 2013-09-25T08:21:55.800 回答