Question

我正在尝试从脚本初始化MongoClient但我失败了。我简单的做法是：

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

并且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尝试完全相同的东西时，它可以工作。

Ruby版本是：

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

irb是：

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

我也尝试过'rubygems'，但据我所知，Ruby 1.9并不需要它。我忘记了什么吗？

Answer 1

通过重新安装ruby解决了此问题。我从未发现问题是什么以及导致问题的原因。

感谢大家的帮助。

Ruby MongoClient：从irb初始化成功，从脚本初始化失败

1 个答案: