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我正在使用 XML 配置文件设置 Log4r，但无法让 EmailOutputter 正常工作。这是我的输出器标签： 

<outputter type="EmailOutputter" name="exception_email" trunc="false" level="ERROR" buffsize="10">
        <formatter type="PatternFormatter" pattern="#{pattern}"/>
        <server>#{smtp_address}</server>
        <port>#{smtp_port}</port>
        <domain>#{smtp_domain}</domain>
        <from>logging@#{smtp_domain}</from>
        <to>exceptions@mydomain.com</to>
        <subject>Log Report</subject>
        <immediate_at>ERROR, FATAL</immediate_at>
      </outputter>

我已经使用 RubyMine 逐步调试器对所有 XML 变量进行了三重和四重检查。异常消息是：

未捕获的异常：创建输出器时出现问题：未初始化的常量 Log4r::Configurator::EmailOutputter /usr/local/lib/ruby/gems/1.9.1/gems/log4r-1.1.10/lib/log4r/configurator.rb:87:inblock in decode_xml' /usr/local/lib/ruby/1.9.1/rexml/element.rb:905:in阻止每个' /usr/local/lib/ruby/1.9.1/rexml/xpath.rb:67:ineach' /usr/local/lib/ruby/1.9.1/rexml/xpath.rb:67:in每个' /usr/local/lib/ruby/1.9.1/rexml/element.rb:905:in each' /usr/local/lib/ruby/gems/1.9.1/gems/log4r-1.1.10/lib/log4r/configurator.rb:87:indecode_xml' /usr/local/lib/ruby/gems/1.9.1/gems/log4r-1.1.10/lib/log4r/configurator.rb:82:in actual_load' /usr/local/lib/ruby/gems/1.9.1/gems/log4r-1.1.10/lib/log4r/configurator.rb:56:inload_xml_file' /root/src/upside/common/upside_logger.rb :16:in initialize' /root/src/upside/common/logger_factory.rb:7:innew' /root/src/upside/common/logger_factory.rb:7:in new_logger' /root/src/upside/config/application.rb:30:inblock in ' /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/ active_support/lazy_load_hooks.rb:34:incall' /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:34:inexecute_hook' /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:26:in block in on_load' /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:25:ineach' /usr/local/lib/ruby/gems/1.9 .1/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:25:in on_load' /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/railtie/configuration.rb:43:inbefore_configuration' /root/src/upside/config/application.rb:29:in <class:Application>' /root/src/upside/config/application.rb:15:in' /root/src/upside/config/ application.rb:14:in<top (required)>' /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:53:in需要'/usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:53:in block in <top (required)>' /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:50:intap'/usr/local/ lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:50:in <top (required)>' /root/src/upside/script/rails:6:inrequire' /root/src/upside/script/rails:6:in `'

我已经仔细检查了 gem 安装，并且 emailoutputter.rb 与其他输出器（功能正常）位于正确的目录中。

谢谢！

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1 回答 1

1

我发现 log4r 文件lib/log4r.rb缺少该行require "log4r/outputter/emailoutputter"。在文件中将这个缺失添加require到我的 Rails 应用程序config/initializer允许 EmailOutputter 类可用。

于 2014-04-02T18:34:58.930 回答