jruby与warbler相关的问题已中止

Question

我是jruby的初学者。我有一个Ruby Rails应用程序--我用rials s来运行它。现在我想创建一个带有WAR文件的war-warbler，但是我得到了一个错误，对此我无能为力：

`双重加载任务请删除lib/ C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activerecord-jdbc-adapter-1.3.21/lib/arjdbc/tasks/databases.rake /jdbc.rake！warble中止！NoMethodError: nil:NilClass的未定义方法'tail‘你是指什么？污点rakefile:1:在rakefile中:6:在C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:1:in C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:2:in rakefile中:1:在rakefile中:6:在C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:1:in C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:2:in rakefile中:1:在rakefile中:6:在中

事实:9.1.5.0 windows7 (2.0.4)

编辑：

如果我调用下面的jruby -S warble --trace，我会得到以下跟踪：

无数次：

double loading C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activerecord-jdbc-adapter-1.3.21/lib/arjdbc/tasks/databases.rake please delete lib/tasks/jdbc.rake if present!

然后：

warble aborted! NoMethodError: undefined method 'tail' for nil:NilClass Did you mean? taint C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/rake-11.3.0/lib/rake/task_manager.rb:221:in 'in_namespace' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/rake-11.3.0/lib/rake/dsl_definition.rb:140:in 'namespace' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activerecord-4.2.7.1/lib/active_record/railties/databases.rake:3:in'<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activerecord-4.2.7.1/lib/active_record/railtie.rb:51:in 'block in Railtie' org/jruby/RubyBasicObject.java:1704:in 'instance_exec' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/railtie.rb:237:in 'block in run_tasks_blocks'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/railtie.rb:245:in 'each_registered_block' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/railtie.rb:237:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/application.rb:451:in 'block in run_tasks_blocks'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine/railties.rb:13:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/application.rb:451:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:453:in 'load_tasks' rakefile:1:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:61:in 'block in load_project_rakefile'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:58:in 'load_project_rakefile' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler.rb:26:in 'project_application' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits/rails.rb:27:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'block in before_configure'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/config.rb:215:in 'initialize' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/task.rb:48:in 'initialize' rakefile:6:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'block in run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/application.rb:452:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:453:in 'load_tasks' C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:1:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:61:in 'block in load_project_rakefile'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:58:in 'load_project_rakefile' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler.rb:26:in 'project_application' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits/rails.rb:27:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'block in before_configure'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/config.rb:215:in 'initialize' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/task.rb:48:in 'initialize' C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:2:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'block in run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/application.rb:452:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:453:in 'load_tasks' rakefile:1:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:61:in 'block in load_project_rakefile'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:58:in 'load_project_rakefile' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler.rb:26:in 'project_application' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits/rails.rb:27:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'block in before_configure'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/config.rb:215:in 'initialize' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/task.rb:48:in 'initialize' rakefile:6:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'block in run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/application.rb:452:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:453:in 'load_tasks' C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:1:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:61:in 'block in load_project_rakefile'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:58:in 'load_project_rakefile' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler.rb:26:in 'project_application' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits/rails.rb:27:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'block in before_configure'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/config.rb:215:in 'initialize' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/task.rb:48:in 'initialize C:/Hagen/leaman/lib/tasks/warbler/warbler.rake:2:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_supp ort/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'block in run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:658:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/application.rb:452:in 'run_tasks_blocks' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/railties-4.2.7.1/lib/rails/engine.rb:453:in 'load_tasks' rakefile:1:in '<main>'org/jruby/RubyKernel.java:974:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'block in load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:240:in 'load_dependency' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/activesupport-4.2.7.1/lib/active_support/dependencies.rb:268:in 'load' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:61:in 'block in load_project_rakefile'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/application.rb:58:in 'load_project_rakefile' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler.rb:26:in 'project_application' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits/rails.rb:27:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'block in before_configure'org/jruby/RubyArray.java:1734:in 'each' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/traits.rb:29:in 'before_configure' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/config.rb:215:in 'initialize' C:/jruby-9.1.5.0/lib/ruby/gems/shared/gems/warbler-2.0.4/lib/warbler/task.rb:48:in 'initialize' rakefile:6:in '<main>'

Answer 1

谢谢大家。我重新安装了JRuby，然后它就能工作了。