本文介绍了Rake中止，尝试加载gem'uglifier'时出错的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图在本地运行演示应用程序， $ bundle exec rake db：create db：migrate
我得到
sam @ samoliver：〜/ ruby-getting-started $ bundle exec rake db：create db：migrate --trace
rake aborted！
Bundler :: GemRequireError：尝试加载gem'uglifier'时发生错误。
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:80:in`在区块（2个等级）中拯救需要'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:76:in`block（2 levels）in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in`each'
/ home / sam /。 rvm / gems / ruby-2.2.3 / gems / bundler-1.11.0 / lib / bundler / runtime.rb：72：在`block in require'
/home/sam/.rvm/gems/ruby- 2.2.3 / gems / bundler-1.11.0 / lib / bundler / runtime.rb：61：在`each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler- 1.11.0 / lib / bundler / runtime.rb：61：在`require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler。 rb：99：在'require'
/home/sam/ruby-getting-started/config/application.rb:7:in`< top（required）>'
/ home / sam / ruby-getting-started / Rakefile：4：在'require'
/ home / sam / ruby-getting-started / Rakefile：4：在< top（required）>'
/家用/ SAM / .rvm /红宝石/红宝石-2.2.3 / lib中/红宝石/ 2.2.0 / rake / rake_module.rb：28：在`load'中
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb： 28：在`load_rakefile'中
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:689:in`raw_load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:94:in`block in load_rakefile'
/home/sam/.rvm/ rubies / ruby-2.2.3 / lib / ruby / 2.2.0 / rake / application.rb：176：在`standard_exception_handling'中
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ ruby / 2.2.0 / rake / application.rb：93：`load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application。 rb：77：在`block in run'中
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:176:in`standard_exception_handling'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:75:in`run'
/ home / sam /。 rvm / rubies / ruby-2.2.3 / bin / rake：33：在< main>中
ExecJS :: RuntimeUnavailable：找不到JavaScript运行时。有关可用运行时的列表，请参阅https://github.com/sstephenson/execjs。
/home/sam/.rvm/gems/ruby-2.2.3/gems/execjs-2.2.2/lib/execjs/runtimes.rb:51:in`autodetect'
/ home / sam /.rvm/gems/ruby-2.2.3/gems/execjs-2.2.2/lib/execjs.rb:5:in`< module：ExecJS>'
/home/sam/.rvm/gems /ruby-2.2.3/gems/execjs-2.2.2/lib/execjs.rb:4:in`< top（required）>'
/home/sam/.rvm/gems/ruby- 2.2.3 / gems / uglifier-2.5.3 / lib / uglifier.rb：3：在'require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/uglifier-2.5。 3 / lib / uglifier.rb：3：在< top（required）>'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib /bundler/runtime.rb:77:in`require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:77 ：在`block（2 levels）in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in `each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in`block in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:61:in`each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:61:in`require'
/ home / sam /。 rvm / gems / ruby-2.2.3 / gems / bundler-1.11.0 / lib / bundler.rb：99：在'require'中
/home/sam/ruby-getting-started/config/application.rb ：7：在'< top（required）>'
/ home / sam / ruby-getting-started / Rakefile：4：'require'
/ home / sam / ruby-getting-启动/ Rakefile：4：在< top（required）>'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb ：28：在`load'中
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb:28:in`load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:689:in`raw_load_rakefile'
/home/sam/.rvm/rubies /ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:94:in`block in load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib /ruby/2.2.0/rake/application.rb:176:in` standard_exception_handling'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application .rb：93：在`lo ad_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:77:in`block in run'
/ home /sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:176:in`standard_exception_handling'
/home/sam/.rvm/rubies/ruby- 2.2.3 / lib / ruby / 2.2.0 / rake / application.rb：75：在'run'中
/home/sam/.rvm/rubies/ruby-2.2.3/bin/rake:33： '< main>'
sam @ samoliver：〜/ ruby-getting-start $
我尝试删除并重新添加'uglifier'（2.5.3），但没有安装'therubyracer'，所以我不明白ExecJS抱怨什么。
Gemfile
source'https://rubygems.org'
ruby'2.2.3'
＃Bundle edge Rails改为：gem'rails'，github：'rails / rails'
gem'rails'，'4.2.3'
＃使用postgresql作为数据库for Active Record
gem'pg'
gem'rails_12factor'，group :: production
＃使用SCSS for样式表
gem'sass-rails'，'〜> 5.0.3'
＃使用Uglifier作为JavaScript资源的压缩器
gem'uglifier'，'> = 1.3.0'
＃使用CoffeeScript for .js.coffee资产和视图
gem'咖啡栏'，'〜> 4.0.0'
＃请参阅https://github.com/sstephenson/execjs#readme以获得更多支持的运行时
＃gem'therubyracer'，平台:: ruby
＃使用jquery作为JavaScript库
gem'jquery-rails'
＃Turbolinks使Web应用程序中的以下链接更快。阅读更多：https://github.com/rails/turbolinks
gem'turbolinks'
＃轻松构建JSON API。阅读更多：https://github.com/rails/jbuilder
gem'jbuilder'，'〜> 2.0'
＃bundle exec rake doc：rails在doc / api下生成API。
gem'sdoc'，'〜> 0.4.0'，组：：doc
＃Spring通过让应用程序在后台运行来加速开发速度。阅读更多：https://github.com/rails/spring
gem'spring'，group：：development
＃使用ActiveModel has_secure_password
＃gem'bcrypt'，' 〜> 3.1.7'
gem'puma'
＃使用Capistrano进行部署
＃gem'capistrano-rails'，group :: development
＃使用调试器
＃gem'debugger'，group：[：development，：test]
解决方案
install nodejs
c $ c> apt-get install nodejs
I'm following 'Getting Started with Ruby on Heroku', but when attempting to run the demo app locally with
$ bundle exec rake db:create db:migrate
I get
sam@samoliver:~/ruby-getting-started$ bundle exec rake db:create db:migrate --trace
rake aborted!
Bundler::GemRequireError: There was an error while trying to load the gem 'uglifier'.
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in `each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in `block in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:61:in `each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:61:in `require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler.rb:99:in `require'
/home/sam/ruby-getting-started/config/application.rb:7:in `<top (required)>'
/home/sam/ruby-getting-started/Rakefile:4:in `require'
/home/sam/ruby-getting-started/Rakefile:4:in `<top (required)>'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb:28:in `load'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb:28:in `load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:689:in `raw_load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:94:in `block in load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:93:in `load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:77:in `block in run'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:75:in `run'
/home/sam/.rvm/rubies/ruby-2.2.3/bin/rake:33:in `<main>'
ExecJS::RuntimeUnavailable: Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.
/home/sam/.rvm/gems/ruby-2.2.3/gems/execjs-2.2.2/lib/execjs/runtimes.rb:51:in `autodetect'
/home/sam/.rvm/gems/ruby-2.2.3/gems/execjs-2.2.2/lib/execjs.rb:5:in `<module:ExecJS>'
/home/sam/.rvm/gems/ruby-2.2.3/gems/execjs-2.2.2/lib/execjs.rb:4:in `<top (required)>'
/home/sam/.rvm/gems/ruby-2.2.3/gems/uglifier-2.5.3/lib/uglifier.rb:3:in `require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/uglifier-2.5.3/lib/uglifier.rb:3:in `<top (required)>'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:77:in `require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:77:in `block (2 levels) in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in `each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:72:in `block in require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:61:in `each'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler/runtime.rb:61:in `require'
/home/sam/.rvm/gems/ruby-2.2.3/gems/bundler-1.11.0/lib/bundler.rb:99:in `require'
/home/sam/ruby-getting-started/config/application.rb:7:in `<top (required)>'
/home/sam/ruby-getting-started/Rakefile:4:in `require'
/home/sam/ruby-getting-started/Rakefile:4:in `<top (required)>'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb:28:in `load'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/rake_module.rb:28:in `load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:689:in `raw_load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:94:in `block in load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:93:in `load_rakefile'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:77:in `block in run'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/home/sam/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rake/application.rb:75:in `run'
/home/sam/.rvm/rubies/ruby-2.2.3/bin/rake:33:in `<main>'
sam@samoliver:~/ruby-getting-started$
I tried removing and adding 'uglifier' (2.5.3) again to no effect and I do have 'therubyracer' installed, so I don't understand what is ExecJS complaining about.
Gemfile
source 'https://rubygems.org'
ruby '2.2.3'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.3'
# Use postgresql as the database for Active Record
gem 'pg'
gem 'rails_12factor', group: :production
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring', group: :development
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
gem 'puma'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Use debugger
# gem 'debugger', group: [:development, :test]
解决方案
install nodejs
apt-get install nodejs
这篇关于Rake中止，尝试加载gem'uglifier'时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！