搞了ExceptionNotifier，觉得不好用，还是自己写吧

首先要配置好ActionMailer，戳我, 戳我, 戳我, 戳我

然后

#lib/exception_mail_notify.rb
class ExceptionMailNotify < ActionMailer::Base

  @@receivers = []
  @@subject_prefix = ''
  
  def self.receivers=(r)
    @@receivers = r
  end

  def self.subject_prefix=(s)
    @@subject_prefix = s
  end

  def self.receivers
    @@receivers
  end

  def app_exception_notify(recipient, body)
    from 'server@abc.com'
    recipients recipient
    subject "[#{@@subject_prefix}Exception] #{Time.now}"
    content_type "text/html"
    body body
  end
  
end

class ApplicationController < ActionController::Base

  protected

  def rescue_action(exception)
    if RAILS_ENV == 'production'
      error = "
" + exception.class.to_s + "
" +
        "
" + exception.message.inspect + "
" +
        exception.backtrace.join('
')
      ExceptionMailNotify.deliver_app_exception_notify ExceptionMailNotify.receivers.join(', '), error
    end
    super exception
  end
  
end



#app/controllers/application_controller.rb
#收件人
ExceptionMailNotify.receivers = %w[a@abc.com b@abc.com]
#邮件主题前缀
ExceptionMailNotify.subject_prefix = 'WWW '

你也可以写在其他controller里，对某一controller启作用