Question

我想将我的Ruby on Rails应用程序与MySQL数据库连接，该数据库是单独开发的。对于这种联系，我使用了 development环境：

adapter: mysql
username: root  
password: ******  
host: 127.0.0.1
port: 3306

当我尝试在Rails中建立MySQL连接时，它显示：

C:/Ruby193/lib/ruby/gems/1.9.1/gems/mysql-2.9.0-x86-mingw32/lib/mysql.rb:4:in `require': Incorrect MySQL client library version! This gem was compiled for 6.0.0 but the client library is 5.5.9. (RuntimeError)
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/mysql-2.9.0-x86-mingw32/lib/mysql.rb:4:in `<top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `require'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `each'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `block in require'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `each'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `require'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in `require'
    from D:/registration/config/application.rb:7:in `<top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `require'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `block in <top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `tap'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

D:\registration>

此外，当我尝试我的rake命令时，它会显示：

rake aborted!
Incorrect MySQL client library version! This gem was compiled for 6.0.0 but the client library is 5.5.9.
D:/registration/config/application.rb:7:in `<top (required)>'
D:/registration/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)

D:\registration>

如何连接我的数据库？

Answer 1

根据错误，您似乎使用的是比MySQL客户端更新版本的gem。

它说：

您的gem已经编译（使用）我的sql客户端版本6.0.0。
您的实际我的SQL客户端版本（在您的计算机中）是5.5.9。

您可以发布MySQL gem版本以及MySQL客户端版本吗？

将MySQL客户端升级到版本6.0.0应解决此问题。

在rails中连接现有的MySQL数据库

1 个答案: