java - YUI 压缩器运行时错误

Question

root@ip-10-0-1-218:/home/ubuntu/appname# bundle exec rake assets:precompile db:migrate RAILS_ENV=production
/usr/local/bin/rake: No such file or directory - java
rake aborted!
YUI::Compressor::RuntimeError: Command 'java -jar /var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/../yuicompressor-2.4.8.jar --type css --charset utf-8 /tmp/yui_compress20161222-21719-d1bg4o' returned non-zero exit status
/var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:106:in `block in compress'
/var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:141:in `streamify'
/var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:86:in `compress'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/yui_compressor.rb:49:in `call'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/yui_compressor.rb:28:in `call'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:66:in `find_asset'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:142:in `block in find'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `logical_paths'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:140:in `find'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:185:in `compile'
/var/lib/gems/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/rake/sprocketstask.rb:147:in `with_logger'
/var/lib/gems/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/var/lib/gems/2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)

我正在尝试在 Ubuntu Linux 16.04 上使用 Passenger 和 Apache 设置 Rails 应用程序，我正在为 Rails 应用程序使用 Assets 管道，当我设置应用程序时，我在网站上收到此错误以及此消息。

我刚刚运行了 --trace 选项，我不知道这是否有帮助

root@ip-10-0-1-218:/home/ubuntu/appname# bundle exec rake assets:precompile db:migrate RAILS_ENV=production --trace
** Invoke assets:precompile (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Execute assets:precompile
/usr/local/bin/rake: No such file or directory - java
rake aborted!
YUI::Compressor::RuntimeError: Command 'java -jar /var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/../yuicompressor-2.4.8.jar --type css --charset utf-8 /tmp/yui_compress20161222-23696-50p1q4' returned non-zero exit status
/var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:106:in `block in compress'
/var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:141:in `streamify'
/var/lib/gems/2.3.0/gems/yui-compressor-0.12.0/lib/yui/compressor.rb:86:in `compress'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/yui_compressor.rb:49:in `call'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/yui_compressor.rb:28:in `call'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:66:in `find_asset'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:142:in `block in find'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `each'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `logical_paths'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:140:in `find'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:185:in `compile'
/var/lib/gems/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/var/lib/gems/2.3.0/gems/sprockets-3.7.1/lib/rake/sprocketstask.rb:147:in `with_logger'
/var/lib/gems/2.3.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `block in execute'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `each'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `execute'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:194:in `block in invoke_with_call_chain'
/usr/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:187:in `invoke_with_call_chain'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:180:in `invoke'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:152:in `invoke_task'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block (2 levels) in top_level'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `each'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block in top_level'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:117:in `run_with_threads'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:102:in `top_level'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:80:in `block in run'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run'
/var/lib/gems/2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
/usr/local/bin/rake:23:in `load'
/usr/local/bin/rake:23:in `<main>'
Tasks: TOP => assets:precompile

Answer 1

YUI compressor需要 java，但您的系统似乎不可用。

如果您想删除 YUI，请检查 config/environments/Production.rb 中的 js_compressor 选项: config.assets.js_compressor = :uglifier