麻烦启动rails服务器Webrick [英] Trouble starting rails server Webrick

问题描述

刚开始进入RoR开发，我正在努力让Webrick服务器启动。我在我的rails项目的文件夹。然后我输入 rails server 或 rails s ，它看起来像服务器将要启动，然后它说退出与下面列出的一堆其他东西。任何人都知道什么是错误？这是什么终端吐出...

  wyep：simple_cms designer1 $ rails s 
 =>启动WEBrick 
 => Rails 3.2.13应用程序开始在开发中在http://0.0.0.0:3000 
 =>调用-d来分离
 => Ctrl-C关闭服务器
退出
 /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/mysql2-0.3.11/lib/mysql2/client.rb:44 ：在'connect'：访问拒绝用户'root'@'localhost'（使用密码：NO）（Mysql2 :: Error）
从/Users/designer1/.rvm/gems/ruby-2.0.0- p195 / gems / mysql2-0.3.11 / lib / mysql2 / client.rb：44：在`initialize'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord -3.2.13 / lib / active_record / connection_adapters / mysql2_adapter.rb：16：在`new'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2。 13 / lib / active_record / connection_adapters / mysql2_adapter.rb：16：在`mysql2_connection'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib /active_record/connection_adapters/abstract/connection_pool.rb:315:in`new_connection'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/ active_record / connection_adapters / abstract / connection_pool.rb：325：在`checkout_new_connection'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record /connection_adapters/abstract/connection_pool.rb:247:in`block（2 levels）in checkout'
 from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2。 13 / lib / active_record / connection_adapters / abstract / connection_pool.rb：242：在`loop'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13 /lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in'block in checkout'
从/Users/designer1/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0。 0 / monitor.rb：211：在`mon_synchronize'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract /connection_pool.rb:239:in`checkout'from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb： 102：在`block in connection'
从/Users/designer1/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in`mon_synchronize'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in'connection'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in`retrieve_connection'
来自/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in`retrieve_connection'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in`connection'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/railtie.rb:88:in`block in< class：Railtie>'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/initializable.rb:30:in`instance_exec'
从/ Users / designer1 / .rvm / gems / ruby​​-2.0.0-p195 / gems / railties-3.2.13 / lib / rails / initializable.rb：30：在`run'
从/Users/designer1/.rvm/ gems / ruby​​-2.0.0-p195 / gems / railties-3.2.13 / lib / rails / initializable.rb：55：in`block in run_initializers'
从/Users/designer1/.rvm/gems/ruby -2.0.0-p195 / gems / railties-3.2.13 / lib / rails / initializable.rb：54：在`each'
从/Users/designer1/.rvm/gems/ruby-2.0.0- p195 / gems / railties-3.2.13 / lib / rails / initializable.rb：54：在`run_initializers'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties -3.2.13 / lib / rails / application.rb：136：在'initialize！'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13 /lib/rails/railtie/configurable.rb:30:in`method_missing'
从/Applications/MAMP/htdocs/simple_cms/config/environment.rb:5:in`< top（必需）>' 
从/Applications/MAMP/htdocs/simple_cms/config.ru:3:in`require'
来自/Applications/MAMP/htdocs/simple_cms/config.ru:3:in`块在& main>'
 from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/builder.rb:51:in`instance_eval'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/builder.rb:51:in'initialize'
从/应用程序/MAMP/htdocs/simple_cms/config.ru:in`new'
从/Applications/MAMP/htdocs/simple_cms/config.ru:in`< main>'
从/ Users / designer1 / .rvm / gems / ruby​​-2.0.0-p195 / gems / rack-1.4.5 / lib / rack / builder.rb：40：在`eval'
从/Users/designer1/.rvm/gems/ ruby-2.0.0-p195 / gems / rack-1.4.5 / lib / rack / builder.rb：40：在`parse_file'
从/Users/designer1/.rvm/gems/ruby-2.0.0 -p195 / gems / rack-1.4.5 / lib / rack / server.rb：200：在`app'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/ railties-3.2.13 / lib / rails / commands / server.rb：46：在`app'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4 .5 / lib / rack / server.rb：304：in'wrapped_app'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/ rack / server.rb：254：在`start'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands/server .rb：70：在`start'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands.rb:55： in`top（required）>'
 from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands中的块中。 rb：50：在`tap'
从/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands.rb:50:in ``（必填）>'
从脚本/ rails：6：在`require'
从脚本/ rails：6：在`< main>'
  

解决方案

错误讯息中有：

 用户'root'@'localhost'拒绝访问（使用密码：NO）$ m $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ pre> 
 
 
在 config / database.yml 中，需要指定一个有效的 host ，用户和密码 
 
Just starting to get into RoR development and I am struggling with getting the Webrick server to start. I am in my rails project's folder. Then I enter rails server or rails s and it looks like the server is going to start then it says Exiting with a bunch of other stuff listed below it. Anyone know what is wrong?? Here is what terminal spits out...
wyep:simple_cms designer1$ rails s
=> Booting WEBrick
=> Rails 3.2.13 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/mysql2-0.3.11/lib/mysql2/client.rb:44:in `connect': Access denied for user 'root'@'localhost' (using password: NO) (Mysql2::Error)
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/mysql2-0.3.11/lib/mysql2/client.rb:44:in `initialize'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `new'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `mysql2_connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:315:in `new_connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:325:in `checkout_new_connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:247:in `block (2 levels) in checkout'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `loop'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:242:in `block in checkout'
from /Users/designer1/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:239:in `checkout' from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:102:in `block in connection'
from /Users/designer1/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:101:in `connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:410:in `retrieve_connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:171:in `retrieve_connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_specification.rb:145:in `connection'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/activerecord-3.2.13/lib/active_record/railtie.rb:88:in `block in <class:Railtie>'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Applications/MAMP/htdocs/simple_cms/config/environment.rb:5:in `<top (required)>'
from /Applications/MAMP/htdocs/simple_cms/config.ru:3:in `require'
from /Applications/MAMP/htdocs/simple_cms/config.ru:3:in `block in <main>'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
from /Applications/MAMP/htdocs/simple_cms/config.ru:in `new'
from /Applications/MAMP/htdocs/simple_cms/config.ru:in `<main>'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in `app'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands/server.rb:70:in `start'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands.rb:55:in `block in <top (required)>'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap'
from /Users/designer1/.rvm/gems/ruby-2.0.0-p195/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

解决方案
Error is in the message there:
Access denied for user 'root'@'localhost' (using password: NO) (Mysql2::Error)
In your config/database.yml you need to specify a valid host, user and password

                        
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