当我需要一个文件时,比如(叫做st.rb):
require 'rubygems'
require 'mongrel'
class TestHandler < Mongrel::HttpHandler
def process(request, response)
response.start(200) do |head, out|
head["Content-Type"] = "text/html"
out.write "Hello, World!\n"
end
end
end
在 irb 中我得到:
>> require 'st.rb'
LoadError: cannot load such file -- st.rb
from /usr/local/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/local/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from (irb):3
from /usr/local/bin/irb:12:in `<main>'
我有一个线索,但只是猜测。我的ruby版本/安装位置是:
/usr/local/bin/ruby
和 ruby 1.9.3p0
然而,ruby gems在/usr/local/lib/ruby/1.9.1
,且它提到的版本为1.9.1
。这可能是原因吗?
谢谢!
更新 奇怪的是,在IRB中键入“puts RUBY_VERSION”,我得到了这个结果:
puts RUBY_VERSION
1.9.3
NoMethodError: undefined method `write' for nil:NilClass
from /usr/local/lib/ruby/1.9.1/irb.rb:311:in `printf'
from /usr/local/lib/ruby/1.9.1/irb.rb:311:in `output_value'
from /usr/local/lib/ruby/1.9.1/irb.rb:160:in `block (2 levels) in eval_input'
from /usr/local/lib/ruby/1.9.1/irb.rb:273:in `signal_status'
from /usr/local/lib/ruby/1.9.1/irb.rb:156:in `block in eval_input'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:243:in `block (2 levels) in each_top_level_statement'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in `loop'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in `block in each_top_level_statement'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in `catch'
from /usr/local/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in `each_top_level_statement'
from /usr/local/lib/ruby/1.9.1/irb.rb:155:in `eval_input'
from /usr/local/lib/ruby/1.9.1/irb.rb:70:in `block in start'
from /usr/local/lib/ruby/1.9.1/irb.rb:69:in `catch'
from /usr/local/lib/ruby/1.9.1/irb.rb:69:in `start'
from /usr/local/bin/irb:12:in `<main>'
Maybe IRB bug!
>>
require 'st'
呢? - Matthew Lehner