Core Web Programming Chapter 20: Server-Side Java: JSP

Chapter 20: Server-Side Java: JSP

Source Code in This Chapter

Note: right-click or shift-click on the links to download the associated file. All code is freely available for unrestricted use. Please remember that compiled Java code used by JSP pages goes in the WEB-INF classes directory (in a subdirectory matching the package name), whereas JSP code goes in the same directories as regular HTML files (usually in a directory structure that starts one level up from the WEB-INF directory).


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Expressions.jsp Page that demonstrates JSP expressions. Uses the JSP-Styles style sheet.
BGColor.jsp Page that demonstrates JSP scriptlets. Uses the JSP-Styles style sheet.
AccessCounts.jsp Page that demonstrates JSP declarations.
ImportAttribute.jsp Page that demonstrates the import attribute of the page directive. Uses the ServletUtilities class from Chapter 19.
Excel.jsp Page that demonstrates the use of JSP to build Excel spreadsheets.
ContactSection.jsp A snippet of a JSP page. It defines a field (accessCount), so pages that include it and want to directly utilize that field must use the include directive, not jsp:include.
SomeRandomPage.jsp Page that includes the ContactSection.jsp snippet. Uses the JSP-Styles style sheet.
WhatsNew.jsp Page that includes:
- news/Item1.html,
- news/Item2.html, and
- news/Item3.html.
The purpose is to demonstrate jsp:include; we are well aware that the included headlines are too outrageous to possibly be true. Uses the JSP-Styles style sheet.
PluginApplet.jsp Page that demonstrates the use of jsp:plugin. Requires you to compile and install PluginApplet.java, TextPanel.java, DrawingPanel.java, and WindowUtilities.java Since these are classes sent to the client to used by applets, the .class files should be in the same directory as the JSP page, not in the WEB-INF/classes directory where classes the server uses go. Uses the JSP-Styles style sheet. Warning: Allaire JRun 3.0 SP2 does not properly support jsp:plugin.
StringBean.java Bean used to demonstrate jsp:useBean, etc. Remember to install it in the WEB-INF/classes/cwp directory.
StringBean.jsp Page that manipulates the StringBean bean with both jsp:useBean (i.e., XML-style) syntax and with Java-style syntax. Uses the JSP-Styles style sheet.
SaleEntry.java Bean used to demonstrate the various approaches to reading request parameters and stuffing them into Java objects. Remember to install it in the WEB-INF/classes/cwp directory.
SaleEntry1.jsp Page that uses the SaleEntry bean, using explicit Java code to read request parameters and assign them to bean properties. Uses the JSP-Styles style sheet.
SaleEntry2.jsp Page that uses the SaleEntry bean, using the param attribute to read request parameters and assign them to bean properties. Uses the JSP-Styles style sheet.
SaleEntry3.jsp Page that uses the SaleEntry bean, using property="*" to read request parameters and assign them to bean properties. Uses the JSP-Styles style sheet.
AccessCountBean.java Bean used to illustrate the difference between running jsp:setProperty for every request vs. only when the object is created. Remember to install it in the WEB-INF/classes/cwp directory.
SharedCounts1.jsp, SharedCounts2.jsp, and SharedCounts3.jsp Three pages that all use the AccessCountBean. Results you get depend on which page is hit first and how many total hits the combined pages receive. Use the JSP-Styles style sheet.
ExampleTag.java Very simple custom tag. Remember to install it in the WEB-INF/classes/cwp/tags directory.
cwp-taglib.tld Tag Library Descriptor file used by the custom tags in this chapter.
SimpleExample.jsp Page that uses the ExampleTag custom tag. Uses the JSP-Styles style sheet.
SimplePrimeTag.java Custom tag that outputs a random prime number of a fixed approximate length. Remember to install it in the WEB-INF/classes/cwp/tags directory. Uses the Primes class from Chapter 19.
SimplePrimeExample.jsp Page that uses the SimplePrimeTag custom tag. Uses the JSP-Styles style sheet.
PrimeTag.java Custom tag that outputs a random prime number of a user-specifiable approximate length. Remember to install it in the WEB-INF/classes/cwp/tags directory.
PrimeExample.jsp Page that uses the PrimeTag custom tag. Uses the JSP-Styles style sheet.
HeadingTag.java Custom tag that makes use of a tag body. Remember to install it in the WEB-INF/classes/cwp/tags directory.
HeadingExample.jsp Page that uses the HeadingTag custom tag. Uses the JSP-Styles style sheet.
DebugTag.java Custom tag that optionally makes use of a tag body. Remember to install it in the WEB-INF/classes/cwp/tags directory.
DebugExample.jsp Page that uses the DebugTag custom tag. Uses the JSP-Styles style sheet.
FilterTag.java Custom tag that modifies the tag body. Remember to install it in the WEB-INF/classes/cwp/tags directory.
FilterExample.jsp Page that uses the FilterTag custom tag. Uses the JSP-Styles style sheet.
RepeatTag.java Custom tag that repeats the tag body a specified number of times. Remember to install it in the WEB-INF/classes/cwp/tags directory.
RepeatExample.jsp Page that uses the RepeatTag custom tag. Uses the JSP-Styles style sheet.
IfTag.java, IfConditionTag.java, IfThenTag.java, and IfElseTag.java, Custom tags that make use of tag nesting. Remember to install them in the WEB-INF/classes/cwp/tags directory.
IfExample.jsp Page that uses the custom nested tags. Uses the JSP-Styles style sheet.
ForwardSnippet.java Partial servlet illustrating how to use a RequestDispatcher to forward requests.
quick-search.html Front end to travel site. Uses airplane.gif, car.gif, bed.gif, passport.gif, and travel-styles.css.
Travel.java Servlet used by travel site. Uses the MVC architecture in that servlet just does computation; all presentation done by JSP. Uses the TravelCustomer bean.
BookFlights.jsp, RentCars.jsp, FindHotels.jsp, EditAccounts.jsp, and IllegalRequest.jsp Pages used by the Travel servlet to do its presentation.

URLs in This Chapter

Sun's servlet home page
Sun's JSP home page
Java Plug-In home page
JavaBeans documentation
Apache open-source tag libraries
The Apache Struts framework for integrating servlets and JSP via the MVC architecture
Chapter 19 Many of the general links on servlets and JSP (download sites, documentation, etc.) are listed there.

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