URLConnection and applet security

Question

Hello,
I've got an applet that comunicates with a servlet with a urlConnection object. If I test de application without permissions of security (Applet Viewer ->Eclipse), the program runs perfectly, but when I test it in the server throws a security exception when the URLConnection connects with the servlet? How can I resolve it?
Thanks

Answer 1

The first part works ok, but in the two try-catch show me the error-messages.
urlServlet = new URL(new URL("http://85.59.55.122:8080/utilidades/"),"imagen");
URLConnection con = urlServlet.openConnection();
     con.setDoInput(true);
                         con.setDoOutput(true);
                         con.setUseCaches(false);
                         con.setRequestProperty(
                                   "Content-Type",
                              "application/x-java-serialized-object");
     ImagenPerso imagen=new ImagenPerso(img);          
try{
                         OutputStream outstream = con.getOutputStream();
                         ObjectOutputStream oos = new ObjectOutputStream(outstream);
                         oos.writeObject(imagen);
                         oos.flush();
                         oos.close();
                    }catch(Exception er3){
                         JOptionPane.showMessageDialog( graph,
                         "Error al incrustar objetos en la peticion",
                         "Editor de procedimientos",
                         JOptionPane.ERROR_MESSAGE);
try{
//                    receive result from servlet
                         InputStream instr = con.getInputStream();
                         ObjectInputStream inputFromServlet = new ObjectInputStream(instr);
                         String result = (String) inputFromServlet.readObject();
                         inputFromServlet.close();
                         instr.close();
                    }catch(Exception i){
                         JOptionPane.showMessageDialog( graph,
                         "Error al leer objetos de la respuesta",
                         "Editor de procedimientos",
                         JOptionPane.ERROR_MESSAGE);
                    }