需要selenium-webdriver不起作用

Question

当我在irb中使用require "selenium-webdriver“时，我得到了错误。我在Windows7 x64上使用的是Ruby2.2.1gem，我已经在C：\ruby221- x64 \lib\ Ruby \x64\2.2.0\gems中安装了selenium webdriver gem

错误如下

 irb(main):002:0> require "selenium-webdriver"
    LoadError: cannot load such file -- selenium-webdriver
    from C:/Ruby221-x64/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:5
    4:in `require'
    from C:/Ruby221-x64/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:5
    4:in `require'
        from (irb):2
        from C:/Ruby221-x64/bin/irb:11:in `<main>'
   irb(main):003:0> require "selenium-webdriver"
   LoadError: cannot load such file -- selenium-webdriver
        from C:/Ruby221-x64/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:5
        4:in `require'
        from C:/Ruby221-x64/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:5
        4:in `require'
        from (irb):3
        from C:/Ruby221-x64/bin/irb:11:in `<main>'
irb(main):004:0>

Answer 1

请试一下这个。这对我很有效。

gem update --system