Error Handling Within the Web-Application Framework
While CFTRY and
CFCATCH provide a granular means of handling
errors and exceptions within your applications, they can be
cumbersome to code. Trying to identify all the potential trouble
spots in your applications where
CFTRY/CFCATCH code should be
placed only compounds the problem. Fortunately, ColdFusion provides a
way to handle errors at a more general level. By including
ColdFusion’s CFERROR tag within your
application’s Application.cfm template,
you can implement application-specific “catch all” error
handlers.
Although the CFERROR tag can be used in other
templates besides Application.cfm, it makes the
most sense to use it in this template. The CFERROR
tag is generally placed directly below the
CFAPPLICATION tag:
<CFAPPLICATION NAME="MyApplication">
<!--- implement error handling --->
<CFERROR TYPE="Exception" TEMPLATE="MyRequestHandler.cfm"
EXCEPTION="Any" MAILTO="webmaster@example.com">
The
CFERROR tag can implement one of four types of
error handling, depending on the value specified in the
TYPE attribute. The TEMPLATE
attribute is also required; it specifies the relative path to a
custom error template to execute in the event that an error or
exception occurs. Depending on the value specified in the
TYPE attribute, different options are available to
the error-handling template. Here are the values for
TYPE and the corresponding options that are
available in the error template:
-
Exception Handles a specific exception ...
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