Calling a method by a button

Question

Hy outthere,
does anyone know how to call a method in my bean by clicking a button
It's purpose is deleting an item in a Guestbook.
i imagined somethin like that:
<Input type="button" onclick="<% guestbook.deleteItem(); %>">
Or is it a completly different idea for doing something like this?
Thanks much for any help
HECK

Answer 1

Since you are already aware that a client-side script cannot directly call an individual server-side Java Bean method- This is a simple alternative you can follow:
Lets say The Bean is : CDCatalogBean
The method in CDCatalogBean.java : deleteSelectedCD()
The main JSP page: MainOrder.jsp which has the delete
button on it.
The Delete button: <INPUT type=button name=deleteCD value="Delete Entry" onClick="window.location.replace('ModifyList.jsp?buttonPressed=deleteCD')">
//pass button name as a query parameter
ModifyList.jsp : Following Code on this JSP
<jsp:useBean id="catalogBean" class="my.app.CDCatalogBean"
scope="session"/>
<%
if(request.getParameter("buttonPressed").equals("deleteCD")) {
catalogBean.deleteSelectedCD(); // call the bean method
response.sendRedirect("MainOrder.jsp"); //takes you back to the main page
}%>
This page can take appropriate action based on the buttons pressed in the application. I have left out more details but hope you get the idea. There might be a better javaScript function to invoke the ModifyOrder.jsp.
Regards
Sharath