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380

Chapter 15 Integrating Servlets and JSP

Listing 15.11 ShowPage.html 

Viewing JSP and Servlet Output

Enter a relative URL of the form /path/name and, optionally,

any attached GET data you want to send. The raw HTML output

of the specified URL (usually a JSP page or servlet) will be

shown. Caveats: the URL specified cannot contain the string

</TEXTAREA>, and attached GET data works

only with servlet engines that support version 2.2.

    URL: 

    GET Data:

15.5 Forwarding Requests From 

JSP Pages

The most common request forwarding scenario is that the request first comes

to a servlet and the servlet forwards the request to a JSP page. The reason a

servlet usually handles the original request is that checking request parame 

ters and setting up beans requires a lot of programming, and it is more conve 

nient to do this programming in a servlet than in a JSP document. The reason

that the destination page is usually a JSP document is that JSP simplifies the

process of creating the HTML content.

However, just because this is the usual approach doesn't mean that it is the

only way of doing things. It is certainly possible for the destination page to be

a servlet. Similarly, it is quite possible for a JSP page to forward requests else 

Second edition of this book: www.coreservlets.com; Sequel: www.moreservlets.com.

Servlet and JSP training courses by book's author: courses.coreservlets.com.