CFLib.org – Common Function Library Project

Description:
Uses Java to extract the host name from a URL. Different from getHostFromURL (http://www.cflib.org/udf.cfm?id=494) since this UDF uses Java to extract the host name and getHostFromURL uses regex.

Return Values:
Returns a string containing the host name.

Example:

<cfset greatBlog = "http://cfsilence.com/client/blog" />
<cfset host = getHostFromURL(greatBlog) />
<cfoutput>#host#</cfoutput>
<!--- outputs 'cfsilence.com' --->

Parameters:

Full UDF Source:

<!---
 Extracts the host name from a URL.
 
 @param url      the url from which you want to extract the host name (Optional)
 @return Returns a string containing the host name. 
 @author Todd Sharp (todd@cfsilence.com) 
 @version 1, June 5, 2008 
--->
<cffunction name="getHostFromURL" access="public" output="false" returntype="string">
    <cfargument name="url" required="false" default="" />
    <cfset var jURL = "" />
    <cfif len(arguments.url)>
        <cfset jURL = createObject("java", "java.net.URL").init(arguments.url) />
        <cfreturn jURL.getHost() />
    <cfelse>
        <cfreturn ""/>
    </cfif>
</cffunction>