我正在尝试使用Phusion passenger和RVM在Ubuntu生产服务器上部署Rails 3应用程序。我已成功安装Phusion乘客，但在浏览器上访问服务器时出现以下错误：
Ruby (Rack) application could not be started
These are the possible causes:
There may be a syntax error in the application's code. Please check for such errors and fix them.
A required library may not installed. Please install all libraries that this application requires.
The application may not be properly configured. Please check whether all configuration files are written correctly, fix any incorrect configurations, and restart this application.
A service that the application relies on (such as the database server or the Ferret search engine server) may not have been started. Please start that service.
有关错误的更多信息可能已写入应用程序的日志文件。请检查它以分析问题。
错误讯息： US-ASCII
中的无效字节序列异常类： 引发ArgumentError
这是回溯：
0 /usr/lib/ruby/1.9.1/rubygems/specification.rb 575 in `normalize_yaml_input'
1 /usr/lib/ruby/1.9.1/rubygems/specification.rb 487 in `from_yaml'
2 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler.rb 294 in `block in load_gemspec_uncached'
3 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler.rb 291 in `chdir'
4 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler.rb 291 in `load_gemspec_uncached'
5 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler.rb 282 in `load_gemspec'
6 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/source.rb 411 in `block in load_spec_files'
7 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/source.rb 410 in `each'
8 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/source.rb 410 in `load_spec_files'
9 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/source.rb 799 in `load_spec_files'
10 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/source.rb 381 in `local_specs'
11 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/source.rb 774 in `specs'
12 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/lazy_specification.rb 53 in `__materialize__'
13 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/spec_set.rb 86 in `block in materialize'
14 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/spec_set.rb 83 in `map!'
15 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/spec_set.rb 83 in `materialize'
16 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/definition.rb 113 in `specs'
17 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/definition.rb 158 in `specs_for'
18 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/definition.rb 147 in `requested_specs'
19 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/environment.rb 23 in `requested_specs'
20 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/runtime.rb 11 in `setup'
21 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler.rb 116 in `setup'
22 /var/lib/gems/1.9.1/gems/bundler-1.2.2/lib/bundler/setup.rb 17 in `'
23 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb 59 in `require'
24 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb 59 in `rescue in require'
25 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb 35 in `require'
26 /home/juniormarketing/trndclone/config/setup_load_paths.rb 14 in `'
27 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb 36 in `require'
28 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb 36 in `require'
29 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/utils.rb 301 in `prepare_app_process'
30 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/rack/application_spawner.rb 156 in `block in initialize_server'
31 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/utils.rb 563 in `report_app_init_status'
32 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/rack/application_spawner.rb 154 in `initialize_server'
33 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server.rb 204 in `start_synchronously'
34 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server.rb 180 in `start'
35 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/rack/application_spawner.rb 129 in `start'
36 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/spawn_manager.rb 253 in `block (2 levels) in spawn_rack_application'
37 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server_collection.rb 132 in `lookup_or_add'
38 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/spawn_manager.rb 246 in `block in spawn_rack_application'
39 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server_collection.rb 82 in `block in synchronize'
40 prelude> 10:in `synchronize'
41 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server_collection.rb 79 in `synchronize'
42 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/spawn_manager.rb 244 in `spawn_rack_application'
43 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/spawn_manager.rb 137 in `spawn_application'
44 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/spawn_manager.rb 275 in `handle_spawn_application'
45 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server.rb 357 in `server_main_loop'
46 /var/lib/gems/1.9.1/gems/passenger-3.0.18/lib/phusion_passenger/abstract_server.rb 206 in `start_synchronously'
47 /var/lib/gems/1.9.1/gems/passenger-3.0.18/helper-scripts/passenger-spawn-server 99 in `'
根据我的理解，在启动应用程序时会调用Bundler.setup（）并偶然发现非ascii字符。这是有道理的，因为该应用程序是针对法语网站的，但我确保在包含非ascii字符的每个源文件的顶部添加# -*- encoding : utf-8 -*-。
这是我的Gemfile：
# -*- encoding : utf-8 -*-
source 'https://rubygems.org'
gem 'rails', '3.2.7'
gem "will_paginate", :git => "https://github.com/p7r/will_paginate.git", :branch => "rails3"
gem "lorem"
gem 'paperclip'
gem 'rails3-jquery-autocomplete'
gem 'spreadsheet'
group :development, :test do
gem 'sqlite3', '1.3.5'
gem 'rspec-rails', '2.10.0'
gem 'faker', '0.3.1', :require => false
end
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '3.2.4'
gem 'coffee-rails', '3.2.2'
gem 'uglifier', '1.2.3'
gem 'jquery-datatables-rails', github: 'rweng/jquery-datatables-rails'
gem 'jquery-ui-rails'
end
gem 'jquery-rails', '2.0.2'
group :test do
gem 'capybara', '1.1.2'
gem 'factory_girl_rails', '1.0'
gem 'webrat'
gem 'cucumber-rails', '1.2.1', :require => false
gem 'database_cleaner', '0.7.0'
end
group :production do
#gem 'pg', '0.12.2'
end
关于出了什么问题的任何想法？
答案 0 :(得分：19)
我在这篇文章中找到了解决方案：When run bundle get invalid byte sequence in US-ASCII
我所要做的就是在我的Gemfile上添加它：
if RUBY_VERSION =~ /1.9/
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8
end
答案 1 :(得分：3)
运行ruby 1.9.3的Rails 2.3应用程序出现此问题。一个解决方案是降级到1.8.7，但这不是你真正想要的。运行rails应用程序时发生此错误（例如浏览器显示错误消息）将这些行放入config / environment.rb（我将它们放在RAILS_GEM_VERSION行之后）：
if RUBY_VERSION =~ /1.9/
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8
end
并重新启动应用程序（我总是重新启动整个apache，还有其他方法）。
答案 2 :(得分：2)
我遇到了这个问题，结果是消息文本中的引号不合适。
其中一个：'
答案 3 :(得分：0)
另一种选择是将 -E 命令行标志传递给 ruby：
export RUBYOPT=-EUTF-8:UTF-8
在尝试恢复针对运行 10 年旧版本 Debian 的嵌入式设备的旧项目时遇到。