User Guide

284 Developing Web Applications with ColdFusion

your CustomTag object. If you wish to store data and/or objects that are accessible to all

instances of your

CustomTag you should use static data members.

Calling the CFX from a ColdFusion Template

You call Java CFXs from within ColdFusion templates by using the name of the CFX.

The following CFML template calls the

HelloColdFusion custom tag:

<HTML>

<BODY>

4 <CFX_HelloColdFusion NAME="Les">

</BODY>

</HTML>

To test the CFX:

1. Create a new source file in your editor and enter the code displayed above.

2. Save the file in a directory configured to serve ColdFusion templates. For example,

you might save the file as c:\inetpub\wwwroot\cfdocs\testjavacfx.cfm on

Windows NT or

/home/docroot/cfdocs/testjavacfx.cfm on UNIX.

3. Request the template from your web browser using the appropriate URL, for

example

http://localhost/cfdocs/testjavacfx.cfm

ColdFusion processes the template and returns a page that displays the text "Hello,

Robert." If an error is returned instead, check the source code to make sure you have

entered it correctly.

ZipBrowser Example

The following example illustrates the use of the Request, Response, and Query objects.

The example uses the

java.util.zip package to implement a Java CFX called

ZipBrowser, which is a zip file browsing tag.

The fully qualified path of the zip archive to browse is specified using the