ruby-on-rails - 由于 `require' : cannot load such file -- bcrypt_ext (LoadError)，Rails 服务器无法启动

Question

我是 rails 新手，使用当前的 rails 5 版本和 ruby​​ 2.3.0，我安装了设备 gem 进行身份验证，但服务器没有启动 Rails guide for devise

我已经按照所有步骤操作并添加了 gem 'bcrypt', '~> 3.1.7'
在我的 gemfile 中。因为我使用的是 Windows 10，所以服务器没有启动

C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `require': cannot load such file -- bcrypt_ext (LoadError)
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `block in require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:259:in `load_dependency'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcrypt.rb:16:in `rescue in <top (required)>'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcrypt.rb:12:in `<top (required)>'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/runtime.rb:91:in `require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/runtime.rb:91:in `block (2 levels) in require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/runtime.rb:86:in `each'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/runtime.rb:86:in `block in require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/runtime.rb:75:in `each'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/runtime.rb:75:in `require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.3/lib/bundler.rb:107:in `require'
        from C:/Sites/testproject/config/application.rb:7:in `<top (required)>'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:88:in `require'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:88:in `block in server'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
        from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

我的 gem 文件如下:

source 'https://rubygems.org'

git_source(:github) do |repo_name|
  repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
  "https://github.com/#{repo_name}.git"
end


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.1'
# Use sqlite3 as the database for Active Record
#gem 'sqlite3'
gem 'pg'
gem 'devise'

# Use Puma as the app server
gem 'puma', '~> 3.0'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 3.0'
# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.11'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platform: :mri
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console', '>= 3.3.0'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Answer 1

尝试删除 Gemfile.lock，此文件会在您 bundle install 时锁定 gems。

转到 root 并在您的终端中输入 rm -rf Gemfile.lock , 评论 gem bcrypt然后再次运行 bundle install
更新

试试 gem uninstall bcrypt和 gem uninstall bcrypt-ruby然后更新打包器 bundle update并重新安装 bcrypt gem install bcrypt --platform=ruby
最后在你的 Gemfile gem 'bcrypt-ruby', '3.1.5', :require => 'bcrypt'和 bundle install .