Process the Form action in the save page : Form Post « JSP « Java Tutorial

<HTML>
    <HEAD>
        <TITLE>Using Buttons</TITLE>
    </HEAD>

    <BODY>
        <% 
            //if(request.getParameter("buttonName") != null) {
            if(request.getParameterNames() != null) {
        %>
            You clicked 
            <%= request.getParameter("buttonName") %>
        <%
            }
        %>

        <FORM NAME="form1" METHOD="POST">
            <INPUT TYPE="HIDDEN" NAME="buttonName">
            <INPUT TYPE="BUTTON" VALUE="Button 1" ONCLICK="button1()">
            <INPUT TYPE="BUTTON" VALUE="Button 2" ONCLICK="button2()">
            <INPUT TYPE="BUTTON" VALUE="Button 3" ONCLICK="button3()">
        </FORM>

        <SCRIPT LANGUAGE="JavaScript">
            <!--
            function button1()
            {
                document.form1.buttonName.value = "button 1"
                form1.submit()
            }    
            function button2()
            {
                document.form1.buttonName.value = "button 2"
                form1.submit()
            }    
            function button3()
            {
                document.form1.buttonName.value = "button 3"
                form1.submit()
            }    
            // --> 
        </SCRIPT>
    </BODY>
</HTML>

23.26.Form Post
	23.26.1.	Get Form Parameter Enumeration
	23.26.2.	Get Form Parameter By Index
	23.26.3.	Form Calculator
	23.26.4.	Process the Form action in the save page
	23.26.5.	Use multiple forms
	23.26.6.	Get submit button value