Ruby on rails 获取“中的错误”；rails s"；，服务器未运行_Ruby On Rails_Ruby_Ruby On Rails 3.1

Ruby on rails 获取“中的错误”；rails s"；，服务器未运行

ruby-on-rails ruby ruby-on-rails-3.1

Ruby on rails 获取“中的错误”；rails s"；，服务器未运行,ruby-on-rails,ruby,ruby-on-rails-3.1,Ruby On Rails,Ruby,Ruby On Rails 3.1,它是Rails 3.1.0 我所做的： rails new site cd site rails s 我得到的信息是： /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list

它是Rails 3.1.0

我所做的：

rails new site
cd site
rails s

我得到的信息是：

/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs.rb:5:in `<module:ExecJS>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs.rb:4:in `<top (required)>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in `require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in `<top (required)>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `each'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `block in require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `each'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler.rb:122:in `require'
    from /home/user1/social/config/application.rb:7:in `<top (required)>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:52:in `require'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:52:in `block in <top (required)>'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:49:in `tap'
    from /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:49:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs/runtimes.rb:47:在“自动检测”中：找不到JavaScript运行时。看见https://github.com/sstephenson/execjs 获取可用运行时的列表。（ExecJS:：RuntimeUnavailable）
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs.rb:5:in`'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/execjs-1.2.9/lib/execjs.rb:4:in`'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee_-script.rb:1:in'require'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee\u script.rb:1:in`'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in'require'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in`'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in'require'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in`'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in'require'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:在“请求中的块（2个级别）”中
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:在'each'中
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:在“请求中的块”中
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:在'each'中
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in'require'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.21/lib/bundler.rb:122:in'require'
from/home/user1/social/config/application.rb:7:in`'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:52:in'require'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:52:in'block in'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:49:in'tap'
from/home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.0/lib/rails/commands.rb:49:in`'
来自脚本/rails:6:in'require'
来自脚本/rails:6:in`'

为什么我会犯这个错误

有人可以提示修复它吗？

正如错误所述，您没有安装Javascript运行时。你应该自己选一个

将此添加到您的文件：

gem "therubyracer"

然后运行

bundle install

并重试。

您可能还需要安装node.js（对我有帮助）

为我工作…

只需打开应用程序文件夹根目录中的文件“Gemfile”，然后将下面的行粘贴到那里

gem 'execjs'

gem 'libv8'

gem 'therubyracer'

粘贴后，只需保存文件并在命令提示符下执行“bundle update”

成功完成捆绑包更新后，请尝试运行“rails s”。它起作用了

谢谢。

看到您的问题，您的系统会抱怨

缺少JavaScript运行时。

你应该去看看一份可能性清单

我建议您从这里下载node.js

这样做：

cd *your download dir*
tar xvf node-v0.4.11.tar.gz
cd node-v0.4.11
./configure
make
sudo make install

我给出这个答案是因为这对我很有效

这个答案对你很有帮助。

dup：我该如何安装node.js？也就是说，你也可以问谷歌

cd *your download dir*
tar xvf node-v0.4.11.tar.gz
cd node-v0.4.11
./configure
make
sudo make install