Question

我使用whois安装$ gem install whois，然后点按Ruby Whois
但是当我用irb测试时，它会出错：

1.9.3p194 :001 > c = Whois::Client.new
NameError: uninitialized constant Whois
from (irb):1
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands/console.rb:47:in `start'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands/console.rb:8:in `start'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>

修改

当我require 'whois'发出另一个错误时：

1.9.3p194 :003 > require 'whois'
LoadError: cannot load such file -- whois
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `require'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `block in require'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:236:in `load_dependency'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `require'
from (irb):3
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands/console.rb:47:in `start'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands/console.rb:8:in `start'
from /home/darshana/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

感谢。

Answer 1

尝试安装并加载whois库..这对我有用。

> gem install whois
> irb
* require 'whois'  
* c = Whois::Client.new
>>  #<Whois::Client:0x8f0fa34 @timeout=10, @settings={}>

Answer 2

有时默认情况下不需要宝石，这次我们需要这个宝石。

例如（在您的情况下），您在Gemfile中添加了whois gem，然后打开控制台给出以下行

require "whois"

然后使用Whois常量应该可用。

Answer 3

如果这是在你的gem文件中，而不是用bundle exec rails c

加载irb

whois在irb中不起作用

3 个答案: