Use java class in ColdFusion11 - The java object type is unknown for the CreateObject function

Question

I have some code which works under Railo, but am trying to get this particular app working on CF10 and CF11

It's a cfWheels app, and I've got a BCrypt.class file in the /miscellaneous/ directory.

In my /events/onapplicationstart.cfm file, I've got:

application.bCrypt = CreateObject( "java", "BCrypt", "/miscellaneous/" );

This works in Railo; but in CF11 I get

The java object type is unknown for the CreateObject function.

Verify the type of your object when creating it and try again. 
Valid Types are : component | java | webservice | dotnet | com | corba | .NET


The error occurred in /Volumes/Documents/blah/public/events/onapplicationstart.cfm: line 8
Called from /Volumes/Documents/blah/public/wheels/global/cfml.cfm: line 111
Called from /Volumes/Documents/blah/public/wheels/events/onapplicationstart.cfm: line 388
6 : 
7 :     // BCrypt library
8 :     application.bCrypt = CreateObject( "java", "BCrypt", "/miscellaneous/" );
9 : 
10 :    // Application Specific settings

I assume it's just a syntax thing? Can I call a .class file in this manner on CF10/11 ?

Adobe CF's createObject only has two arguments. The type and the class. The class file itself has to be put in the cfusion\wwwroot\WEB-INF\classes folder — haxtbh
– haxtbh, Commented May 26, 2015 at 9:24
Ah thanks, needed: this.javaSettings = { LoadPaths = ["/miscellaneous"] }; and then only use CreateObject( "java", "BCrypt" ); — Neokoenig
– Neokoenig, Commented May 26, 2015 at 9:29
Reopening because the claim that this question was a duplicate of another wasn't accurate. It was a similar situation, but not the same. — Adam Cameron
– Adam Cameron, Commented May 26, 2015 at 9:33
@Neokoenig: you might wanna make your comment into an answer. — Adam Cameron
– Adam Cameron, Commented May 26, 2015 at 9:33
@haxtbh - That was a reasonable explanation (and turned out to be the problem). Next time, post it as an answer so folks can vote on it :) — Leigh
– Leigh, Commented Jun 3, 2015 at 1:47

Community · Accepted Answer · 2017-05-23 11:43:40Z

5

Ah thanks all. As haxtbh said in the comments, the problem was

Adobe CF's createObject only has two arguments. The type and the class.

So I needed to put:

this.javaSettings = { LoadPaths = ["/miscellaneous"] };

in /config/app.cfm

and then use

CreateObject( "java", "BCrypt" );

in /events/onapplicationstart.cfm

edited May 23, 2017 at 11:43

CommunityBot

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answered May 26, 2015 at 9:45

Neokoenig

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1 Comment

Anurag Over a year ago

By default the ColdFusion server caches class file on first load, you can choose to reload fresh copy every time using reloadOnChange="true" as one of the parameters. During development it is really helpful.

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