CFIMPORT |
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Description
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You can use the cfimport tag to import either of the following:
- All ColdFusion pages in a directory, as a tag custom tag library.
- A Java Server Page (JSP) tag library. A JSP tag library is a packaged set of tag handlers that conform to the JSP 1.1 tag extension API.
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Category
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Application framework tags
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Syntax<cfimport
taglib = "taglib-location"
prefix = "custom">
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See also
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cfapplication
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History
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ColdFusion MX: Added this tag.
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Usage
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The following example imports the tags from the directory myCustomTags:
<cfimport
prefix="mytags"
taglib="myCustomTags">
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You can import multiple tag libraries using one prefix. If there are duplicate tags in a library, the first one takes precedence.
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JSP tags have fixed attributes; however, if the tag supports runtime attribute expressions, most tag libraries support the use of the syntax #expressions#.
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To reference a JSP tag in a CFML page, use the syntax <prefix:tagname>. Set the prefix value in the prefix attribute.
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To use JSP custom tags in a ColdFusion page, follow these steps:
- Put a JSP tag library JAR file (for example, myjsptags.jar) into the ColdFusion server directory wwwroot/WEB-INF/lib. If the tag library has a separate TLD file, put it in the same directory as the JAR file.
- At the top of a CFML page, insert code such as the following:
<cfimport
prefix="mytags"
taglib="/WEB-INF/lib/myjsptags.jar">
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To reference a JSP tag from a JAR file, use the following syntax:
<cfoutput>
<mytags:helloTag message="#mymessage#" />
<cfoutput>
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The cfimport tag must be on the page that uses the imported tags. For example, if you use a cfimport tag on a page that you include with the cfinclude call, you cannot use the imported tags on the page that has the cfinclude tag. Similarly, if you have a cfimport tag on your Application.cfm page, the imported tags are available on the Application.cfm page only, not on the other pages in the application. ColdFusion does not throw an error in these situations, but the imported tags do not run.
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You cannot use the cfimport tag to suppress output from a tag library.
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For more information, see the Java Server Page 1.1 specification.
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Example<h3>cfimport example</h3>
<p>This example uses the random JSP tag library that is available from the
Jakarta Taglibs project, at http://jakarta.apache.org/taglibs/
<cfimport taglib="/WEB-INF/lib/taglibs-random.jar" prefix="randomnum">
<randomnum:number id="randPass" range="000000-999999" algorithm="SHA1PRNG"
provider="SUN" />
<cfset myPassword = randPass.random>
<cfoutput>
Your password is #myPassword#<br>
</cfoutput>
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