How do you capture errors for an entire Application in ColdFusion?

Question

I am currently trying to capture all errors in my application by including the following code in Application.cfc:

<cffunction name="onError">
    <!--- The onError method gets two arguments: 
            An exception structure, which is identical to a cfcatch variable. 
            The name of the Application.cfc method, if any, in which the error 
            happened. --->
    <cfargument name="Except" required=true/>
    <cfargument type="String" name = "EventName" required=true/>
    <!--- Log all errors in an application-specific log file. --->
    <cflog file="#THIS.NAME#" type="error" text="Event Name: #Eventname#" >
    <cflog file="#THIS.NAME#" type="error" text="Message: #Except.message#">
    <!--- Throw validation errors to ColdFusion for handling. --->
    <cfif Find("coldfusion.filter.FormValidationException", Arguments.Except.StackTrace)>
        <cfthrow object="#Except#">
        <cfelse>
        <cfoutput>
        <h1>#Eventname#</h1>
        </cfoutput>
        <cfdump var="#Except#">
    </cfif>
</cffunction>

Some of that is borrowed from other examples I have seen (which I don't fully understand). I ultimately want to show some kind of graceful error page to solicit feedback from the user and then log/email the error. This seems to catch a lot of errors, but not all. I don't want to use try/catch everywhere if I don't have to either. Any suggestions?

Answer 1

There is also an overall ColdFusion error handler that you can define in the ColdFusion administrator. Under the Server Settings > Settings, scroll down to the bottom and set the option for "Site-wide Error Handler".

Check this in the docs as well About error handling in ColdFusion