Often in web application an approach called MVC is used; according to it each request is initially processed by a servlet. The servlet invokes code that fetches or creates the business data, places that data in beans, stores the beans, and forwards the request to a JSP page to present the results.
In this example, our goal is to prepare sample bean object in servlet and pass it to JSP page behind servlet. Each request should result in a new bean instance, so here we apply request-based sharing. That means that our bean exist within single request.
Here is a bean shared:
A servlet processing initial request with the following forward to a JSP:
A JSP working on ready bean:
<jsp:useBean id="sampleBean" type="test.SampleBean" scope="request" /> <html> <head> <title>Request sharing</title> </head> <body> <h2> Bean value: <jsp:getProperty name="sampleBean" property="value" /> </h2> </body> </html>