Próbuję pobrać treść html z danej strony w następujący sposób (dla przykładu posłużyła strona dp.pl)
/*
/*
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* and open the template in the editor.
*/
package esim;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Properties;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author jurek
*/
@WebServlet(name = "download", urlPatterns = {"/download"})
public class download extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
URL url = new URL("http://www.dobreprogramy.pl");
try{
BufferedReader rd = new BufferedReader(new InputStreamReader(url.openStream()));
}
catch(Exception e){
out.println(e.getMessage());
}finally {
out.close();
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
}
Zwracany błąd to:
type Exception report
message
descriptionThe server encountered an internal error () that prevented it from fulfilling this request.
exception
java.net.SocketException: Unknown proxy type : HTTP
Dlaczego występuje taki błąd?