| kprice | 9c922d8 | 2006-08-30 22:07:19 +0000 | [diff] [blame] | 1 | <?xml version="1.0" encoding="utf-8"?>
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| 2 | <!--Arbortext, Inc., 1988-2005, v.4002-->
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| 3 | <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN"
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| 4 | "concept.dtd">
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| 5 | <concept id="cpdjsps" xml:lang="en-us">
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| 6 | <title>JavaServer Pages (JSP) technology</title>
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| 7 | <prolog><metadata>
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| 8 | <keywords><indexterm>JavaServer pages<indexterm>overview</indexterm></indexterm>
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| 9 | <indexterm>dynamic Web content<indexterm>generating</indexterm></indexterm>
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| 10 | </keywords>
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| 11 | </metadata></prolog>
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| 12 | <conbody>
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| 13 | <p>The JavaServer Pages technology enables you to generate dynamic web content,
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| 14 | such as HTML, DHTML, XHTML, and XML files, to include in a Web application.
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| 15 | JSP files are one way to implement server-side dynamic page content. JSP files
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| 16 | allow a Web server, such as Apache Tomcat, to add content dynamically to your
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| 17 | HTML pages before they are sent to a requesting browser.</p>
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| 18 | <p>When you deploy a JSP file to a Web server that provides a servlet engine,
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| 19 | it is preprocessed into a servlet that runs on the Web server. This is in
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| 20 | contrast with client-side <tm tmclass="special" tmowner="Sun Microsystems, Inc."
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| 21 | tmtype="tm" trademark="JavaScript">JavaScript</tm> (within <codeph><SCRIPT></codeph> tags),
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| 22 | which is run in a browser. A JSP page is ideal for tasks that are better suited
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| 23 | to execution on the server, such as accessing databases or calling Enterprise <tm
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| 24 | tmclass="special" tmowner="Sun Microsystems, Inc." tmtype="tm" trademark="Java">Java</tm> beans.</p>
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| 25 | <p>You can create and edit a JSP file in the HTML editor by adding your own
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| 26 | text and images using HTML, JSP tagging, or <tm tmclass="special" tmowner="Sun Microsystems, Inc."
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| 27 | tmtype="tm" trademark="JavaScript">JavaScript</tm>, including <tm tmclass="special"
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| 28 | tmowner="Sun Microsystems, Inc." tmtype="tm" trademark="Java">Java</tm> source
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| 29 | code inside of scriptlet tags. Typically, JSP files have the file extension
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| 30 | .jsp. Additionally, the JSP specification suggests that JSP fragment files
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| 31 | should have file extension .jspf. If this convention is not followed, the
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| 32 | JSP validator will treat JSP fragments as regular standalone JSP files, and
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| 33 | compilation errors might be reported.</p>
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| 34 | <p>The <cite>Sun Microsystems JSP 1.2 Specification</cite> provides the ability
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| 35 | to create custom JSP tags. Custom tags simplify complex actions and provide
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| 36 | developers with greater control over page content. Custom tags are collected
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| 37 | into a library (taglib). A tag library descriptor file (taglib.tld) is an
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| 38 | XML document that provides information about the tag library, including the
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| 39 | taglib short name, library description, and tag descriptions. Refer to the <cite>Sun
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| 40 | Microsystems JSP 1.2 Specification</cite> for more details.</p>
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| 41 | <p>To use JSP 1.2 custom taglibs, you can import the tag library .tld and
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| 42 | .jar files into your project to use them, or associate them as Web Library
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| 43 | projects. You can also reference a TLD file by using a URI.</p>
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| 44 | </conbody>
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| 45 | </concept>
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