ruby on rails mac x os lion 运行服务器 LoadError答案

【问题标题】：ruby on rails mac x os lion run server LoadErrorruby on rails mac x os lion 运行服务器 LoadError
【发布时间】：2012-03-01 08:46:18
【问题描述】：

当我在终端上键入 rails server 时，出现以下错误。我不知道如何解决它。有人可以帮我吗？而且我还需要一个ruby on rails mac os x Lion安装教程。

:simple_cms benhuayang$ rails 服务器 /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/mysql2-0.3.11/lib/mysql2.rb:9:in `require': dlopen(/Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle, 9): 库未加载: libmysqlclient.18.dylib (LoadError ) 参考自： /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle 原因：找不到图片 - /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle 来自 /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/mysql2-0.3.11/lib/mysql2.rb:9:in `' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `block (2 levels) in require' 来自 /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `每个'来自 /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `block in require' 来自 /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `每个'来自 /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21/lib/bundler.rb:122:in `require' from /Users/benhuayang/Sites/simple_cms/config/application.rb:7:in `' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:53:in `require' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:53:in `block in' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:50:in `tap' from /Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.1/lib/rails/commands.rb:50:in `' from 脚本/rails:6:in 'require' from 脚本/rails:6:in `

这是mysql的路径

/Users/benhuayang/.rvm/gems/ruby-1.9.3-p0/bin:/Users/benhuayang/.rvm/gems/ruby-1.9.3-p0@global/bin:/Users/benhuayang/.rvm/rubies/ruby-1.9.3-p0/bin:/Users/benhuayang/.rvm/bin:/opt/local/bin:/opt/local/sbin:/usr/local/mysql/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin

【问题讨论】：

你的mysql安装路径是什么？
你好，如何在 mac os x 上查看路径？
你用什么程序安装MySQL？您也许可以从终端执行which mysql 以获取路径。
我刚刚找到了mysql的路径。

标签： ruby-on-rails

【解决方案1】：

当我过去遇到这种情况时，我使用了以下解决方案。

在终端中，运行：

export DYLD_LIBRARY_PATH="$DYLD_LIBRARY_PATH:/usr/local/mysql/lib"

然后尝试在应用的根目录中运行 rails server 命令。如果它有效，只需将相同的命令放入您的 ~/.profile 中，以便每次进入终端时它都会运行。

【讨论】：

【解决方案2】：

当我在运行 rake db:migrate 后出现以下错误时，Ryan 的解决方案对我有用，我认为发布它有助于 google 搜索。

rake aborted!
dlopen(/Users/[USERNAME]/.rvm/gems/ruby-1.9.3-p286/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.18.dylib
  Referenced from: /Users/[USERNAME]/.rvm/gems/ruby-1.9.3-p286/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
  Reason: image not found - /Users/[USERNAME]/.rvm/gems/ruby-1.9.3-p286/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle

(See full trace by running task with --trace)

【讨论】：