使用 ruby 1.9.2、rails3.1.0，为什么我在尝试生成脚手架时会出错。答案

【问题标题】：Using ruby 1.9.2, rails3.1.0, Why am I getting an error when I try to generate a scaffold.使用 ruby 1.9.2、rails3.1.0，为什么我在尝试生成脚手架时会出错。
【发布时间】：2011-10-07 04:57:50
【问题描述】：

基本上，当我尝试生成脚手架时，我收到了这个错误 no such file to load -- openssl (LoadError) 。错误来自

.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'

不知道为什么会这样。这是完整的错误：

/home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/rack-1.3.4/lib/rack/backports/uri/common_192.rb:53: warning: already initialized constant WFKV_
/home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require': no such file to load -- openssl (LoadError)
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `block in load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/rack-1.3.4/lib/rack/session/cookie.rb:1:in `<top (required)>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `block in load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/actionpack-3.1.0/lib/action_dispatch/middleware/session/cookie_store.rb:4:in `<top (required)>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application/configuration.rb:125:in `const_get'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application/configuration.rb:125:in `session_store'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:168:in `block in default_middleware_stack'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:142:in `tap'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:142:in `default_middleware_stack'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/engine.rb:445:in `app'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application/finisher.rb:37:in `block in <module:Finisher>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `instance_exec'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `run'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:50:in `block in run_initializers'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `each'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `run_initializers'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:92:in `initialize!'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /home/spencer/Desktop/blog/config/environment.rb:5:in `<top (required)>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:78:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:78:in `require_environment!'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/commands.rb:22:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

【问题讨论】：

标签： ruby-on-rails ruby gem rvm

【解决方案1】：

好的，所以我最终做的是这个。

从 rvm 卸载所有版本的 ruby
从 rvm 中删除了所有的 gemsets
$ rvm pkg install openssl
$ rvm pkg install zlib
$ rvm install 1.9.2 --with-openssl-dir=$HOME/.rvm/usr --with-zlib-dir=$rvm_path/usr
在 gemset 中重新安装了导轨

之后一切正常。

【讨论】：

【解决方案2】：

您应该能够执行以下操作：（请原谅我的路径中可能存在错误并且我不在我的 linux 机器上）

cd to ~.rvm/src/ruby-1.9.2-p290/ext/openssl
ruby extconf.rb
make
make install

基本上，只需 cd 到特定 ruby 版本的 gem 源目录并重新构建/安装它。

您不需要重新构建 ruby，这是一个常见问题。

【讨论】：

【解决方案3】：

如果你在 linux 你可以试试这些

apt-get install openssl
apt-get install libopenssl-ruby

【讨论】：

这很可能无法解决问题，除非他也重新编译 Ruby。该问题是由于在编译 Ruby 期间缺少 libopenssl-ruby 库引起的。如果碰巧这仍然损坏，请阅读rvm notes 的输出，它将告诉您要安装的确切软件包。
beginrescueend.com/packages/openssl 我现在正在尝试这个。一秒钟找出来....没用。