求大神帮忙 有关java.io.IOException: Invalid Http response怎么解决

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package socket;
//这是服务端的代码
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;public class Server implements Runnable{
    Socket socket;
   
        public Server(Socket socket) {
                this.socket = socket;
        }
   
        @Override
        public void run() {
                System.out.println(socket.getInetAddress());
                try {
                InputStream inputStream=socket.getInputStream();
                byte buf[]=new byte[1024];
                int length=0;
                length=inputStream.read(buf);
               
            System.out.println(new String(buf,0,length));
               
               
            
            OutputStream outputStream=socket.getOutputStream();
            PrintWriter printWriter=new PrintWriter(outputStream);
            printWriter.println("<html><head></head><body><font size='30' color='red'>你好</font></body></html>");
             printWriter.flush();
           socket.shutdownInput();
          
                System.out.println("发送数据成功");
                } catch (IOException e) {
                        e.printStackTrace();
                }
        }
        public static void main(String[] args) throws Exception {
                ServerSocket serverSocket=new ServerSocket(9090);
                while(true)  
                {
                        Socket socket=serverSocket.accept();
                        Thread t=new Thread(new Server(socket));
                        t.start();
                }
        }}通过浏览器访问服务端，可以正常访问，不过运行的下面客户端的代码就抛出
java.io.IOException: Invalid Http response
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at socket.Client.main(Client.java:17)
//这是客户端的代码
package socket;import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
public class Client {
  public static void main(String[] args) {
        try {
                URL url=new URL("http://192.168.0.105:9090/");
                URLConnection h        =url.openConnection();
                InputStream inputStream=h.getInputStream();
                byte[] buf=new byte[1024];
                int length=0;
                length=inputStream.read(buf);
                System.out.println(new String(buf,0,length));
               
        } catch (MalformedURLException e) {
                e.printStackTrace();
        } catch (IOException e) {
                e.printStackTrace();
        }
}
  
}

解决方案 »

  1.   

    由于 你是用HttpURLConnection  去读取内容 ，HttpURLConnection  解析的是http 协议 ，你服务端的内容里面不符合http协议
    比较 http1.1版本 ，content-length 等等 没有 httpURLConnection 是无法解析的。所以会报 Invalid Http response  。
    解决方案 按照http协议给返回头 设置content-length .
    浏览器为什么不报错 。在于他的容错能力。
      

  2.   


    3楼正解。
    服务端代码要修改一下：public class Server implements Runnable{
    Socket socket;
       
        public Server(Socket socket) {
                this.socket = socket;
        }    @Override
        public void run() {
                System.out.println(socket.getInetAddress());
                try {
                InputStream inputStream=socket.getInputStream();
                byte buf[]=new byte[1024];
                int length=0;
                length=inputStream.read(buf);
               
            System.out.println(new String(buf,0,length));
               
               
            
            OutputStream outputStream=socket.getOutputStream();
            PrintWriter printWriter=new PrintWriter(outputStream);
            printWriter.println("HTTP/1.1 200 OK\r\n");
            printWriter.print("Date: Sat, 31 Dec 2005 23:59:59 GMT\r\n");
            printWriter.print("Content-Type: text/html;charset=ISO-8859-1\r\n");
            printWriter.println("Content-Length: " + "<html><head></head><body><font size='30' color='red'>你好</font></body></html>".getBytes().length + "\r\n");
            printWriter.println("<html><head></head><body><font size='30' color='red'>你好</font></body></html>");
            printWriter.flush();
           socket.shutdownInput();
           socket.close();
          
                System.out.println("发送数据成功");
                } catch (IOException e) {
                        e.printStackTrace();
                }
        }
        public static void main(String[] args) throws Exception {
                ServerSocket serverSocket=new ServerSocket(9090);
                while(true)  
                {
                        Socket socket=serverSocket.accept();
                        Thread t=new Thread(new Server(socket));
                        t.start();
                }
        }}
      

  3.   

    在我的错误中，我是在我的输出语句前加入这条语句就好了：
    printWriter.println("HTTP/1.1 200 OK\r\n");
    这是我的代码....
    Socket socket = server.accept();
    PrintWriter out = new PrintWriter(new OutputStreamWriter(
    socket.getOutputStream()), true);
    if (socket.isConnected()) {
        out.println("HTTP/1.1 200 OK\r\n");
        out.println(updateInfo());
    }
    socket.close();
    ....