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236

Chapter 10 JSP Scripting Elements

Table 10.1  Attributes That Permit JSP Expressions

Element Name

Attribute Name(s)

jsp:setProperty

name

(see Section 13.3,  Setting Bean Properties )

value

jsp:include

page

(see Chapter 12,  Including Files and Applets in JSP 

Documents )

jsp:forward

page

(see Chapter 15,  Integrating Servlets and JSP )

jsp:param

value

(see Chapter 12,  Including Files and Applets in JSP 

Documents )

Example

Listing 10.1 gives an example JSP page; Figure 10 1 shows the result. Notice

that I included 

META

 tags and a style sheet link in the 

HEAD

 section of the

HTML page. It is good practice to include these elements, but there are two

reasons why they are often omitted from pages generated by normal servlets.

First, with servlets, it is tedious to generate the required 

println

 statements.

With JSP, however, the format is simpler and you can make use of the code

reuse options in your usual HTML building tool. Second, servlets cannot use

the simplest form of relative URLs (ones that refer to files in the same direc 

tory as the current page) since the servlet directories are not mapped to

URLs in the same manner as are URLs for normal Web pages. JSP pages, on

the other hand, are installed in the normal Web page hierarchy on the server,

and relative URLs are resolved properly. Thus, style sheets and JSP pages can

be kept together in the same directory. The source code for the style sheet,

like all code shown or referenced in the book, can be downloaded from

http://www.coreservlets.com/

. 

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

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