New PDF release: Core JSP

By Damon Hougland, Aaron Tavistock

ISBN-10: 0130882488

ISBN-13: 9780130882486

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The skilled developer's advisor to JavaServer Pages improvement! * Database entry, XML aid, JavaBean integration, and masses extra * Architecting JSP purposes for optimum functionality and maintainability * comprises numerous whole pattern JSP functions equivalent to an authentication framework, an e-mail tag library, and a Database-to-XML/XSL conversion software Sun's JavaServer Pages expertise provides builders a strong cross-platform answer for dynamic internet program improvement with out the drawbacks of prior ways. In middle JSP, top firm builders express skilled builders precisely tips on how to make the main of JSP technology—for database integration, XML functions, consultation monitoring, and plenty of different reasons. From coding basics to powerful JSP software layout, you can find it here—along with real-world pattern code for HTML calendars, JNDI purposes, LDAP-based authentication JavaBeansTM, database seek varieties, and extra! * utilize scriptlets, expressions, declarations, activities and directives * Get lower than the hood with Sun's JSP engine: multithreading, patience, implicit items, and extra * comprehend JSP requests and responses—in intensity * tune periods and knowledge: hidden frames and shape fields, cookies, URL rewriting, and the HttpSession API * combine databases: JDBCTM, SQL, metadata, connection pooling, and extra * developing customized JSP activities (custom tags) * Optimize the functionality of your JSP pages each middle sequence booklet: * DEMONSTRATES tips on how to write advertisement caliber code * beneficial properties dozens of nontrivial courses and examples—no toy code! * specializes in the gains and services most crucial to genuine builders * offers target, independent insurance of state-of-the-art technologies—no hype! center JSP grants: * useful insights for remodeling dynamic websites into full-fledged net functions * Hands-on assurance of integrating JSP and XML * professional JavaBean motion thoughts for integrating JavaBean enterprise common sense with JSP presentation common sense * vast code examples—including numerous entire pattern functions

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Example text

Wherever the page directive is located, it affects the page as a whole. The buffer and autoFlush Attributes The buffer attribute determines whether the JSP page will be buffered, and the buffer size if it is to be buffered. By default the page buffer is at least 8 kb, but the actual value is dependent of the specific JSP engine used. If " none " is specified, the page is not buffered at all, and all output is written directly to a PrintWriter of the ServletResponse object. If a size is specified, such as 16kb, then the output is buffered to a JspWriter object with a buffer no less than the size specified.

If the Action creates an instance of an object the id value can be used to reference it through the implicit object PageContext. Scope attribute The second common attribute is the scope attribute, which identifies the lifecycle of the Action element. The id attribute and the scope attribute are directly related, as the scope attribute determines the lifespan of the object associated with the id. The scope attribute has four possible values: page, request, session, and application. Each of these values refers to an implicit object in the JSP page, similar to the out object referenced above.

SimpleDateFormat takes a text string that specifies the String format desired for the date. First the SimpleDateFormat object is created and is labeled formatter. Then the format() method of the SimpleDateFormat object is called and applied it to the Calendar object received. This object is called thisCal. As the format() method returns a string it is simply inserted into the return method of the FormatTitle() method to return the current date in the specified format. The format of this text string is based on the ISO 8601 date and time standard.

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Core JSP by Damon Hougland, Aaron Tavistock


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