[jruby-user] NameError: uninitialized constant Krypt::Provider::JDK

Last night I had to restart my server (Windows Server 2011 SBS), and my
Rails application failed to start up. In the logs I found this error:

NameError: uninitialized constant Krypt::Provider::JDK

What is odd here is that I last restarted the server on December 18th,
and the Rails application started up fine. I have done nothing to it in
between times. It was the same .war file, with the same gems packaged
with it (also same database and Tomcat). As far as I know, everything
was identical (it is possible Java updated in that time, but I do not
think so).

The issue apparently is that two vital gems are no longer included in
JRuby (if they are vital, why are they not included?). I am using
jruby-jars version 1.7.13 by the way. For anyone else who has this
issue, I fixed the problem like this:

In my gem file:

gem 'krypt-core'
gem 'krypt-provider-jdk'


Then do:

gem install krypt-core
gem install krypt-provider-jdk
bundle install
warble

This may be common knowledge, but I found precious little when Googling.

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