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JSTL: JSP Standard Tag Library Kick Start

Name: JSTL: JSP Standard Tag Library Kick Start
Author: Jeff Heaton
ISBN: 9780672324505

by Jeff Heaton

September 2002

Intermediate to advanced

432 pages

7h 43m

English

Sams

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Copyright
Dedication
About the Author
Acknowledgments
Tell Us What You Think!
Introduction
The Benefits of JSTLJSTL and JSPWho This Book Is ForStructure and Organization of the BookThe Forum ApplicationSource Code and Updates
1. Understanding JSP Custom Tags
The Role of Tags in JSPUsing HTMLUsing JSP ScriptletsProgramming in TagsIntroducing JSTLThe Apache Taglibs ProjectThe Structure of JSTLThe Core Tag LibraryThe XML Tag LibraryThe I18N Tag LibraryThe Relational DBTags (SQL) LibraryInstalling JSTLAdding JSTL to Your Web ServerUsing JSTL in Your JSP PagesTesting the Counting ExampleTroubleshooting the Counting ExampleSummary
2. Programming the JSP Standard Tag Library
Understanding Scoped VariablesPage ScopeRequest ScopeSession ScopeApplication ScopeAccessing Application DataAccessing Page Context DataThe paramValues CollectionThe Basics of Web Application ProgrammingProcessing the Query StringWorking with FormsUnderstanding StateSummary
3. Understanding Basic Tag Logic
Exception ProcessingGenerating ExceptionsUsing the <c:catch> TagUsing ConditionalsUsing the <c:if> TagUsing the <c:choose> TagUsing the <c:when> TagUsing the <c:otherwise> TagNesting ConditionalsA Chat ApplicationSummary
4. Using the Expression Language
JSTL Expression TagsUsing the <c:out> TagUsing the <c:set> TagUsing the <c:remove> TagUsing the EL Expression LanguageAccessing PropertiesLiteralsProperty Access Operators: [] and.Arithmetic OperatorsAddition, Subtraction, and MultiplicationDivisionThe Modulo OperatorThe Unary Minus OperatorRelational OperatorsEquality and Inequality OperatorsLogical OperatorsThe and and or OperatorsThe Unary Not OperatorOperator PrecedenceReserved WordsImplicit ObjectsType ConversionCoerce to a StringCoerce to a Primitive Numeric TypeCoerce to a CharacterCoerce to a BooleanUsing the RT Expression LanguageDetermining the BrowserCase-Insensitive String ComparisonsSummary
5. Collections, Loops, and Iterators
Understanding CollectionsThe Iteration TagsThe <c:forEach> TagLoop StatusThe getCurrent() MethodThe getIndex() MethodThe getCount() MethodThe isFirst() MethodThe isLast() MethodThe getBegin() MethodThe getEnd() MethodThe getStep() MethodUsing IteratorsIterating over StringsFixed-Length LoopsThe <c:forTokens> TagModifying a CollectionTag Collaboration with a Fixed LoopTag Collaboration with a CollectionSummary

6. Formatting Data with Tags
FormattingUsing the <fmt:formatNumber> TagFormatting PercentsUsing the <fmt:formatDate> TagParsingUsing the <fmt:parseNumber> TagUsing the <fmt:parseDate> TagTime ZonesSetting Time ZonesUsing the <fmt:timeZone> TagSpecifying the Time Zone in web.xmlUsing the <fmt:setTimeZone> TagUsing Time ZonesApplying Date FormattingSummary
7. Accessing Data with SQL Tags
Introducing the Forum ExampleDatabase LayoutSetting Up the Forum on SQL DatabasesSetting Up the Forum on Microsoft AccessDatabase TablesScreen LayoutUnderstanding JDBC DriversConnecting to a JDBC Data SourceTransparent CollaborationExplicit Collaboration via Application LogicExplicit Collaboration via the <sql:setDataSource> TagUsing the <sql:setDataSource> TagConnecting to MySQLConnecting to Microsoft AccessConnecting to Other DatabasesUsing SQL TagsUsing the <sql:query> TagUsing the <sql:update> TagUsing the <sql:transaction> TagUsing the <sql:param> TagUsing the <sql:dateParam> TagImplementing the Forum ExampleUsing a Query to Log InPreparing the Login FormHandling a POSTUsing an Update to RegisterWelcome to the ForumUsing Transactions to Administer the ForumA General Query EngineSummary
8. Accessing Data with XML Tags
Understanding XMLUnderstanding XPathUnderstanding XML Core TagsUsing the <x:parse> TagUsing the <x:out> TagUsing the <x:set> TagUsing XML Flow-Control TagsUsing the <x:forEach> TagUsing the <x:if> TagUsing the <x:choose> TagUsing the <x:when> TagUsing the <x:otherwise> TagTransforming XML with XSLTUsing the <x:transform> TagUsing the <x:param> TagSummary
9. Accessing Internet Resources with JSTL
The URL-Related TagsUsing the <c:import> TagCharacter EncodingHandling Relative and Absolute URLsRelative URL—Same ContextRelative URL—Foreign ContextAbsolute URLsUsing the <c:url> TagUsing the <c:param> TagUsing the <c:redirect> TagUnderstanding Internet ResourcesIntroducing RSSUsing the RSS FormatSummary
10. Understanding JSTL Internationalization
The I18N-Related TagsUsing the <fmt:setLocale> TagUsing the <fmt:setBundle> TagUsing the <fmt:bundle> TagUsing the <fmt:message> TagUsing the <fmt:param> TagUsing the <fmt:requestEncoding> TagResource BundlesWhat Is a Resource Bundle?Creating a Properties File Resource BundleCreating a Resource Bundle for a Romance LanguageCreating a Resource Bundle for a Non-Romance LanguageCompiling the Resource BundlesA Multilingual Forum ApplicationSummary
11. Creating Your Own Tag Libraries
Developing Custom Tag LibrariesTags Used by the Forum ApplicationData Structures Used by the Forum ApplicationStoring UsersStoring ForumsStoring MessagesThe Components of a Tag LibraryThe Tag Library Descriptor File (TLD)The TLD File HeaderTag DefinitionsUpdating web.xml for Custom TagsIncluding Tag Libraries in web.xmlStoring Configuration Information in web.xmlCreating the Tag ClassesHandling SessionsObtaining a New SessionHandling ScopeRetrieving a Single RecordRetrieving a CollectionEncapsulating FunctionalityConstructing the TagsRetrieving a Single RecordAccessing AttributesEvaluating EL ExpressionsThe doEndTag() MethodRetrieving a CollectionEncapsulating FunctionalityTags with BodiesCreating the JAR FileUsing the Tags from JSPSummary
12. Debugging and Deploying Tag Libraries
DebuggingGeneral ExceptionsA JSTL-Specific ErrorAn Error in a Tag LibraryDebugging with an IDEIntroducing EclipseUsing Eclipse with TomcatCreating Your Own ProjectDebugging the Forum ApplicationDeploying Web ApplicationsUnderstanding WAR FilesDistributing a WAR FileSummary
A. JSTL Reference
The Core TagsThe <c:catch> TagThe <c:choose> TagThe <c:forEach> TagThe <c:forTokens> TagThe <c:if> TagThe <c:import> TagThe <c:otherwise> TagThe <c:out> TagThe <c:param> TagThe <c:redirect> TagThe <c:remove> TagThe <c:set> TagThe <c:url> TagThe <c:when> TagThe I18N TagsThe <fmt:bundle> TagThe <fmt:formatDate> TagThe <fmt:formatNumber> TagThe <fmt:message> TagThe <fmt:param> TagThe <fmt:parseDate> TagThe <fmt:parseNumber> TagThe <fmt:requestEncoding> TagThe <fmt:setBundle> TagThe <fmt:setLocale> TagThe <fmt:setTimeZone> TagThe <fmt:timeZone> TagThe Relational Database Tags (SQL)The <sql:dateParam> TagThe <sql:param> TagThe <sql:query> TagThe <sql:setDataSource> TagThe <sql:transaction> TagThe <sql:update> TagThe XML TagsThe <x:choose> TagThe <x:forEach> TagThe <x:if> select TagThe <x:otherwise> TagThe <x:out> TagThe <x:param> TagThe <x:parse> TagThe <x:set> TagThe <x:transform> TagThe <x:when> Tag
B. Installing JSTL and Tomcat
Installing JDKInstalling TomcatInstalling the Book ExamplesThe Classpath and Search PathInstalling JSTL without the Examples
C. Installing MySQL
Obtaining and Installing MySQLSetting Up MySQLCreating the Forum ExampleInstalling a JDBC Driver
D. Unix Installation Notes

Overview

The JSP Standard Tag Library is a collection of commonly used functions and tools invaluable to JSP developers to avoid re-creating the same functions on site after site. Sun has indicated that JSP development should be based around using tag libraries going forward, and will relase JSP STL, as their official library. This book starts with an in-depth deiscussion of the JSP STL, then goes beyond the standard library to teach developers to create their own tags to further encapsulate the most common features of their specific applications. Along the way, readers will also learn to use tags to access data, process XML, handle expressions, and further customize pages for international visitors. Later chapters explain how readers can expand the Standard Tab Library by creating their own tags.

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