invoking java scriptlet in JSP using HTML

Question

I am trying to find a way to invoke a piece of java code within the JSP using HTML form

  <form method="get" action="invokeMe()">

       <input type="submit" value="click to submit" />

  </form>


  <%
     private void invokeMe(){
       out.println("He invoked me. I am happy!");   
     }
  %>

the above code is within the JSP. I want this run the scriptlet upon submit

I know the code looks very bad, but I just want to grasp the concept... and how to go about it.

thanks

Answer 1

You can use Ajax to submit form to servlet and evaluate java code, but stay on the same window.

<form method="get" action="invokeMe()" id="submit">

       <input type="submit" value="click to submit" />

</form>

<script>
    $(document).ready(function() {
        $("#submit").submit(function(event) {
            $.ajax({
                type : "POST",
                url : "your servlet here(for example: DeleteUser)",
                data : "id=" + id,
                success : function() {
                    alert("message");
                }
            });
            $('#submit').submit(); // if you want to submit form
        });
    });
</script>