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import net.tanesha.recaptcha.ReCaptchaImpl;
import net.tanesha.recaptcha.ReCaptchaResponse;
...
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet captchaVerif</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Votre Captcha est invalide " + request.getContextPath() + "</h1>");
            out.println("<h1>Veuillez <a href='index.jsp'>réessayer</a></h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {
            out.close();
        }
    }
....
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
 
        String remoteAddr = request.getRemoteAddr();
        ReCaptchaImpl reCaptcha = new ReCaptchaImpl();
        reCaptcha.setPrivateKey("6LfqPx8TAAAAAHGYhRS4W6PVFyCV3fJwo74NqNxl");
 
 
        String challenge = request.getParameter("recaptcha_challenge_field");
        String uresponse = request.getParameter("recaptcha_response_field");
        ReCaptchaResponse reCaptchaResponse = reCaptcha.checkAnswer(remoteAddr, challenge, uresponse);
 
 
        if (reCaptchaResponse.isValid()) {
          out.print("Answer was entered correctly!");
          RequestDispatcher disp = request.getRequestDispatcher("inscription.jsp");
                    disp.forward(request, response);
        } else {
          processRequest(request, response);
        }
    } |