Rails服務器在啓動時退出Rails 4

Rails服務器在啓動時保持退出。自從升級到4級後，我遇到了一些錯誤，並且我一次都在黑客中進行一次黑客攻擊。這是我無法想象的。起初它不會由於他* .rb文件中的錯誤而啓動，現在它什麼都不說。請幫忙？Rails服務器在啓動時退出Rails 4

=> Booting WEBrick 
=> Rails 4.0.1 application starting in development on http://0.0.0.0:3000 
=> Run `rails server -h` for more startup options 
=> Ctrl-C to shutdown server 
Exiting 
/usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/connection_adapters/connection_specification.rb:58:in `rescue in resolve_hash_connection': Specified 'sqlite3' for database adapter, but the gem is not loaded. Add `gem 'sqlite3'` to your Gemfile. (Gem::LoadError) 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/connection_adapters/connection_specification.rb:55:in `resolve_hash_connection' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/connection_adapters/connection_specification.rb:46:in `resolve_string_connection' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/connection_adapters/connection_specification.rb:30:in `spec' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/connection_handling.rb:39:in `establish_connection' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/railtie.rb:176:in `block (2 levels) in <class:Railtie>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/lazy_load_hooks.rb:44:in `each' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/base.rb:322:in `<module:ActiveRecord>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.1/lib/active_record/base.rb:22:in `<top (required)>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise/orm/active_record.rb:3:in `<top (required)>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:229:in `require' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:229:in `block in require' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:214:in `load_dependency' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:229:in `require' 
     from /Users/andresalaz/Desktop/code/andre/config/initializers/devise.rb:22:in `block in <top (required)>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/devise-3.1.1/lib/devise.rb:276:in `setup' 
     from /Users/andresalaz/Desktop/code/andre/config/initializers/devise.rb:3:in `<top (required)>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:223:in `load' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:223:in `block in load' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:214:in `load_dependency' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:223:in `load' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/engine.rb:609:in `block (2 levels) in <class:Engine>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/engine.rb:608:in `each' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/engine.rb:608:in `block in <class:Engine>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/initializable.rb:30:in `instance_exec' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/initializable.rb:30:in `run' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/initializable.rb:55:in `block in run_initializers' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:210:in `block (2 levels) in each_strongly_connected_component_from' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:209:in `block in each_strongly_connected_component_from' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/initializable.rb:44:in `each' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/initializable.rb:44:in `tsort_each_child' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:203:in `each_strongly_connected_component_from' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component' 
     from /usr/local/rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/initializable.rb:54:in `run_initializers' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/application.rb:215:in `initialize!' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/railtie/configurable.rb:30:in `method_missing' 
     from /Users/andresalaz/Desktop/code/andre/config/environment.rb:5:in `<top (required)>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:229:in `require' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:229:in `block in require' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:214:in `load_dependency' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.1/lib/active_support/dependencies.rb:229:in `require' 
     from /Users/andresalaz/Desktop/code/andre/config.ru:3:in `block in <main>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize' 
     from /Users/andresalaz/Desktop/code/andre/config.ru:in `new' 
     from /Users/andresalaz/Desktop/code/andre/config.ru:in `<main>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/server.rb:199:in `app' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/commands/server.rb:48:in `app' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/commands/server.rb:75:in `start' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/commands.rb:76:in `block in <top (required)>' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/commands.rb:71:in `tap' 
     from /usr/local/rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.1/lib/rails/commands.rb:71:in `<top (required)>' 
     from script/rails:6:in `require' 
     from script/rails:6:in `<main>'

來源

2013-11-03 user1932747

你試過解決這個錯誤嗎？

Specified 'sqlite3' for database adapter, but the gem is not loaded. 
Add `gem 'sqlite3'` to your Gemfile. (Gem::LoadError)

來源

2013-11-03 11:21:58 jcm

這是我的Gemfile。但是，當我進行捆綁安裝時，它沒有運行。 – user1932747

什麼沒有運行？ 'bundle install'的輸出是否表示任何東西？ – jcm

你必須

gem 'sqlite3'

添加到您的Gemfile然後做

bundle install

，然後再試一次

來源

2013-11-03 11:22:12 brancz

Rails服務器在啓動時退出Rails 4

回答

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