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我正在尝试从脚本初始化 MongoClient,但我失败了。我简单地做的是:

require 'mongo'
include Mongo
client = MongoClient.new("localhost", 27017)

它失败并出现以下错误:

/var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/cursor.rb:43:in `initialize': undefined method `connection' for nil:NilClass (NoMethodError)
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/db.rb:564:in `new'
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/db.rb:564:in `command'
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/mongo_client.rb:591:in `block in check_is_master'
    from /usr/lib/ruby/1.9.1/timeout.rb:68:in `timeout'
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/mongo_client.rb:590:in `check_is_master'
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/mongo_client.rb:474:in `connect'
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/mongo_client.rb:698:in `setup'
    from /var/lib/gems/1.9.1/gems/mongo-1.9.1/lib/mongo/mongo_client.rb:155:in `initialize'
    from ./test.rb:52:in `new'
    from ./test.rb:52:in `<main>'

但是,当我从 irb 尝试完全相同的事情时,它就起作用了。

红宝石版本是:

ruby 1.9.3p194(2012-04-20 修订版 35410)[x86_64-linux]

irb 是:

/usr/bin/irb1.9.1 --版本 irb 0.9.6(09/06/30)

我也尝试过要求“rubygems”,但据我所知,Ruby 1.9 不需要它。我是不是忘记了什么?

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1 回答 1

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此问题已通过重新安装 ruby​​ 得到解决。我从来没有发现问题是什么以及导致它的原因。

感谢大家的帮助。

于 2013-09-08T18:25:18.350 回答