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POMy applet cannot connect to Servlet and transfering data
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  1. POMy applet cannot connect to Servlet and transfering data
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    copied!<p>I want to send some data from my Applet to a specific Servlet which supposed to connect to a MySQL database and store the transferred data. In the Applet side I used this method to transfer data from applet to the servlet:</p> <pre><code> public void sendData() { try { URL postURL = new URL("http://localhost:8080/MyApplet/mydb"); HttpURLConnection conn = (HttpURLConnection) postURL.openConnection(); conn.setRequestMethod("POST"); conn.setDoOutput(true); conn.connect(); String param1 = "data1"; String param2 = "data2"; String param3 = "data3"; PrintWriter out = new PrintWriter(conn.getOutputStream()); out.write("param1=" + URLEncoder.encode(param1, "UTF-8") + "&amp;param2=" + URLEncoder.encode(param2, "UTF-8") + "&amp;param3=" + URLEncoder.encode(param3, "UTF-8")); out.flush(); } catch (Exception e) { System.err.println(e.getMessage()); JOptionPane.showMessageDialog(GameApplet.this, e.getMessage(), "Exception", JOptionPane.ERROR_MESSAGE); } } </code></pre> <p>Which MyApplet/mydb is the path of my Selrvet. and in the Servlet side I wrote this code:</p> <pre><code> protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); String parameter1 = request.getParameter("param1"); String parameter2 = request.getParameter("param2"); String parameter3 = request.getParameter("param3"); connectToDB(); insert(parameter1, parameter2, parameter3); // insert("X", "Y", "Z"); closeDB(); } </code></pre> <p>which <code>processRequest()</code> calls from <code>doGet()</code> and <code>doPost()</code>. The Servlet works properly when I call it directly from its http link and fill the database without any problem but when I call it from the applet , nothing happens and even without any exception! to be honest , they can't communicate with each other and I'm really confused.</p>
 

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