Repeatitive process in Servlet
Hishashiburi neh.
It’s been a long time before I post this solution.Actually I got a lot of problems and solutions but I didn’t have time to post it in my blog.So unlucky!
But right now I just steal some time to update and post this entry right after I got the solution. It’s been three days I faced this problem. It’s challenge my ability as programmer because as normal programmer, we will feel strong if our code works, is not, I feel that I am not good programmer at all,I should never be born as a programmer.
Problem: My servlet is keep repeating implement some code once you submit form from jsp page.I think it should not repeat if we don’t want to.
Example
Placement. jsp sample code
So when I clicked SAVE button, the output in my NetBeans produce :
MODE ------------------------------> i can change my life
MODE ------------------------------> i can change my life
Which if I do code that inserting to database; it will insert two times and prompt error violent to primary key. I already get sick with the problem and modify almost entire coding until I got to see
I change it to type="button" , and now the stupid repeatiting thing stop.I thinks it happen because it implement two command, first submit from javascript (doSubmit()) and then submit from the button. But that’s only what I think.
So case is closed, right know I need to rewrite back the code that I modified due to my stupidiness.
It’s been a long time before I post this solution.Actually I got a lot of problems and solutions but I didn’t have time to post it in my blog.So unlucky!
But right now I just steal some time to update and post this entry right after I got the solution. It’s been three days I faced this problem. It’s challenge my ability as programmer because as normal programmer, we will feel strong if our code works, is not, I feel that I am not good programmer at all,I should never be born as a programmer.
Problem: My servlet is keep repeating implement some code once you submit form from jsp page.I think it should not repeat if we don’t want to.
Example
public class PlacementServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try{ String mode=request.getParameter("mode"); System.out.println("MODE ------------------------------>"+mode); if(mode.equals("i can change my life ")){ //do something for example insert into databases } else { System.out.println(“Bye- bye”) } //more codes
<script> function doSubmit(){ var frm=document.placement frm.mode.value="i can change my life"; frm.action = "PlacementServlet"; frm.submit();} </script> <form name="placement"> <input name="btnsave" type="submit" class="button" id="btnsave" value="SAVE" onclick="javascript:doSubmit()"> </form>
So when I clicked SAVE button, the output in my NetBeans produce :
MODE ------------------------------> i can change my life
MODE ------------------------------> i can change my life
Which if I do code that inserting to database; it will insert two times and prompt error violent to primary key. I already get sick with the problem and modify almost entire coding until I got to see
<input name="btnsave" type="submit" class="button" id="btnsave" value="SAVE" onclick="javascript:doSubmit()">
So case is closed, right know I need to rewrite back the code that I modified due to my stupidiness.
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