6

I have a button in a JSP page: 

<button type="button" onclick="">Click me </button>

I want to perform the following jsp code: 

<% session.setAtrribute("status","guest"); %>

when I press the button.

Is it possible to use JSP code on a button click and if yes how?

reevesy
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Kristal
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2 Answers2

13

Do something like this:-

    <% 
        if(request.getParameter("buttonName") != null) {
               session.setAttribute("status", "guest");
        }
    %>

    <FORM NAME="form1" METHOD="POST">
        <INPUT TYPE="HIDDEN" NAME="buttonName">
        <INPUT TYPE="BUTTON" VALUE="Button 1" ONCLICK="button1()">
    </FORM>

    <SCRIPT LANGUAGE="JavaScript">
        <!--
        function button1()
        {
            document.form1.buttonName.value = "yes";
            form1.submit();
        } 
        // --> 
    </SCRIPT>
Siva Charan
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4

either use:

  1. <input type="submit" value="click"/> and set form action to some servlet/jsp page where you set you'r session attribute

  2. use ajax in onclick button method.

    JQUERY SAMPLE:

    $.ajax({
  url: "srvServlet", //or setJSP.jsp
  success: function(){
    alert ('ok');
  }
});
elrado
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  • I don't know ajax so, there is no another way other than form? – Kristal Mar 03 '12 at 19:38
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    @Kristal You just have to send data from client to server :). Either submit whole page or just par of it, but you have to submit something. If you don't line input:submit just use javascript function document.forms["myform"].submit(); – elrado Mar 03 '12 at 19:47