Question

我正在尝试在Windows操作系统的命令提示符下运行rails服务器，并显示以下错误。

C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/run
times.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://gi
thub.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUn
available)
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/l
ib/execjs.rb:5:in `<module:ExecJS>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/l
ib/execjs.rb:4:in `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/coffee-script-
2.2.0/lib/coffee_script.rb:1:in `require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/coffee-script-
2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/coffee-script-
2.2.0/lib/coffee-script.rb:1:in `require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/coffee-script-
2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/coffee-rails-3
.2.2/lib/coffee-rails.rb:1:in `require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/coffee-rails-3
.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler/runtime.rb:72:in `require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler/runtime.rb:72:in `block (2 levels) in require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler/runtime.rb:70:in `each'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler/runtime.rb:70:in `block in require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler/runtime.rb:59:in `each'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler/runtime.rb:59:in `require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/
lib/bundler.rb:132:in `require'
        from C:/Sites/priya/config/application.rb:7:in `<top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
3/lib/rails/commands.rb:53:in `require'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
3/lib/rails/commands.rb:53:in `block in <top (required)>'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
3/lib/rails/commands.rb:50:in `tap'
        from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1
3/lib/rails/commands.rb:50:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

我已经下载了execjs并将该文件复制到我的项目文件夹中。但没有变化。请告诉我如何解决这个问题。

Answer 1

错误是

Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.

如果您使用Rails 3并启用资产管道，则需要资产编译器。 ExecJS支持这些运行时，如文档页面中所述：

therubyracer - 嵌入Ruby的Google V8
therubyrhino - 嵌入JRuby的Mozilla Rhino
Node.js的
Apple JavaScriptCore - 包含在Mac OS X中
Microsoft Windows脚本宿主（JScript）

按照https://github.com/sstephenson/execjs上的说明安装其中一个。由于您使用的是Windows，因此可能需要先尝试Microsoft Windows Script Host。

宝石在轨道上的红宝石

1 个答案: