无法使用jruby启动rails5，出现以下错误。
gavinyap@gavin-ubuntu ~/Development/rails5app rails s
DEPRECATION WARNING: alias_method_chain is deprecated. Please, use Module#prepend instead. From module, you can access the original method using super. (called from require at bin/rails:4)
Bundler::GemRequireError: There was an error while trying to load the gem 'activerecord-jdbcmysql-adapter'.
Gem Load Error is: uninitialized constant ActiveRecord::ConnectionAdapters::Column::Format
Backtrace for gem load error is:
/home/gavinyap/.rvm/gems/jruby-9.1.2.0/gems/activerecord-jdbc-adapter-1.3.20/lib/arjdbc/jdbc/type_cast.rb:13:in `<module:TypeCast>'
/home/gavinyap/.rvm/gems/jruby-9.1.2.0/gems/activerecord-jdbc-adapter-1.3.20/lib/arjdbc/jdbc/type_cast.rb:7:in `<module:Jdbc>'
/home/gavinyap/.rvm/gems/jruby-9.1.2.0/gems/activerecord-jdbc-adapter-1.3.20/lib/arjdbc/jdbc/type_cast.rb:4:in `< module:ConnectionAdapters>'
/home/gavinyap/.rvm/gems/jruby-9.1.2.0/gems/activerecord-jdbc-adapter-1.3.20/lib/arjdbc/jdbc/type_cast.rb:3:in `<top>'
/home/gavinyap/.rvm/gems/jruby-9.1.2.0/gems/activerecord-jdbc-adapter-1.3.20/lib/arjdbc/jdbc/column.rb:1:in `singleton cla
Jruby和Rails的版本
ActiveRecord JDBC gem尚未针对Rails 5进行更新。在GitHub上的项目检查显示，今年年初有一些开发活动，但是没有迹象表明何时将为Rails 5发布新的gem。
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我来说两句