Beginning Apache Struts: From Novice to Professional by Arnold Doray

By Arnold Doray

Starting Apache Struts will supply you a operating wisdom of Apache Struts. This booklet is perfect for you Java programmers who've a few JSP familiarity, yet very little past event with Servlet expertise. equipped in a condensed instructional and lab structure, the cloth during this e-book has been established in genuine lecture room environments. It takes a step by step, hands-on method of instructing you Struts. The publication even previews the following new release of Struts, the Apache Shale. the final result's so you might speedy practice Struts on your paintings settings with self assurance.

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Sample text

Jsp might appear in the web browser. fm Page 14 Tuesday, January 24, 2006 2:09 PM 14 CHAPTER 2 ■ SERVLET AND JSP REVIEW Figure 2-5. jsp is a header, indicating the type of output (text/html, using UTF-8 encoding), and the scripting language used (Java). <%@ page contentType="text/html;charset=UTF-8" language="java" %> Immediately following this header is a tag library declaration: <%@ taglib uri="/tags/time" prefix="time" %> This declaration tells the servlet container that this JSP page uses a tag library.

Note If you want to re-deploy a web application, you have to delete the existing web application’s subdirectory. Most servlet containers will not overwrite an existing subdirectory. xml, used to configure your webapp. xml file that you must use. • A WEB-INF\lib directory, into which you put all Struts JAR files, including any thirdparty JAR files your application uses. class files for your webapp. • Your JSP, HTML, image, CSS, and other files. ) images subdirectory. Figure 2-3 illustrates this information.

Listing 4-3. fm Page 28 Monday, December 12, 2005 3:47 PM 28 CHAPTER 4 ■ CUSTOM TAGS //other code omitted. } When the JSP that contains your tag loads, the servlet container calls all the necessary setXXX() functions so that attributes of your tag are accessible to your tag’s Java code. Using the tag as an example again, at runtime, you could call the getProperty() function or just look at _property to read the value of the property attribute of the tag. Helper Classes In order for your Java handler classes to do anything useful, such as reading the contents of a tag’s body or writing your tag’s output, there are a couple of helper classes you need to know about.

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