Using Jsp Tags And Tag Libraries; Using A Jsp Tag In A Coldfusion Page - MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX Develop Manual

Using JSP tags and tag libraries

You can use JSP tags from any JSP tag library. For example, you can use any of the custom tags in
the open-source Apache Jakarta Project Taglibs project tag libraries, located at http://
jakarta.apache.org/taglibs/index.html. This project consists of a number of individual JSP custom
tag libraries for purposes ranging from JNDI access to generating random text strings.

Using a JSP tag in a ColdFusion page

JSP pages use a standard set of tags, such as
custom JSP tag libraries into a JSP application. You can use both the standard JSP tags and
custom JSP tags in ColdFusion pages, as the following sections describe.
Standard JSP tags and ColdFusion
ColdFusion tags provide equivalent features to most standard JSP tags. For example, the
tag provides the same service as the
cfapplet
JavaBeans, as does the
because ColdFusion automatically gets properties when you reference them. Therefore,
ColdFusion does not support the use of standard JSP tags directly.
However, two standard JSP tags provide functionality that is useful in ColdFusion pages: the
and
forward include
in "About GetPageContext and the PageContext object." on page 738
methods that provide the same operations. For more information about using these methods see
"Accessing a JSP page or servlet from a ColdFusion page" on page
Using custom JSP tags in a ColdFusion page
Follow these steps to use a custom JSP tag on a ColdFusion page:
To use a custom tag:
Put the tag library, consisting of the taglibname.jar file, and the taglibname.tld file, if one is
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supplied, in the web_root/WEB-INF/lib directory. The JSP custom tag library must be in this
directory for you to use the
In the ColdFusion page that uses a JSP tag from the tag library, specify the tag library name in
2
a tag; for example:
cfimport
<cfimport taglib="/WEB-INF/lib/random.jar" prefix="random">
If the TLD file is not included in the JAR file, use the .tld suffix in place of the .jar suffix.
Note: The cfimport tag must be on the page that uses the imported tag. You cannot put the
cfimport tag in Application.cfm.
Use the custom tag using the form prefix:tagName; for example:
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<random:number id="myNum" range="000000-999999" />
Note: You cannot use the cfsavecontent tag to suppress output of a custom JSP tag.
jsp:forward
tag. Similarly, you do not use the
jsp:usebean
tags invoke JSP pages and Java servlets. The PageContext object described
tag.
cfimport
and
jsp:include
tag, and
jsp:plugin
740.

Using JSP tags and tag libraries

. You can also import
tag lets you use
cfobject
jsp:getproperty
has and
forward include
tag
739