jsp - use Ajax to call data from servlet -

i know question has been asked before, can't seem find awnser on it.

i'm trying call servlet method when page loaded, @ moment it's endless loop cause every time servlet posts response page gets reloaded , calls servlet again calls reloads page again etc etc..

i'm collecting id url use in servlet collect data need. here code i'm using.

<form style="display:none;" action="servletc" method="post">                 <input type="hidden" name="hdn_parameter" value="<%= request.getparameter("productid")%>"/>                 <input type="submit" id="btn_loadform" name="loadform" style="display: none;"/>                 <script>                          document.getelementbyid('btn_loadform').click();                 </script>             </form> 

and got couple pieces of code throughout page

<img id="picture_img" class="" style="width:300px;" src="${imageresponse}" /> 

the following code on servlet

if (request.getparameter("loadform") != null)     {             int productid = integer.parseint(request.getparameter("hdn_parameter"));             string link = "picturedetail.jsp?productid=" + integer.tostring(productid);             product p = null;              try               {                   p = dbconnect.getproduct(productid);              }               catch (sqlexception ex)               {                  logger.getlogger(servletc.class.getname()).log(level.severe, null, ex);              }              request.setattribute("imageresponse", p.getpath());             request.setattribute("titleresponse", p.getname());             request.setattribute("descriptionresponse", p.getdescription());             request.setattribute("priceresponse", p.getprice());             loaded = true;             requestdispatcher dis = request.getrequestdispatcher(link);             dis.forward(request, response);     } 

could me on should make happen without refreshing page work smoothly.

thanks in advance.

the request goes out on click of button proper http request , response naturally repaint page. have form ajax request on button click, parse response on success , on page (with parsed response data).