第一次安装rails，连接不上服务器答案

【问题标题】：Installing rails for first time and cant connect to server第一次安装rails，连接不上服务器
【发布时间】：2015-03-26 01:26:43
【问题描述】：

我刚刚开始尝试学习编码，并且我正在尝试让 Ruby 第一次运行。我已经搜索了一个多小时，但找不到解决方案。当我尝试连接到服务器时，出现此错误：

C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/execjs-2.2.2/lib/execjs/runtimes.rb:51:in `autodetect': Could
not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS:
:RuntimeUnavailable)
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/execjs-2.2.2/lib/execjs.rb:5:in `<module:ExecJS>'

        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/execjs-2.2.2/lib/execjs.rb:4:in `<top (required)>
'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/uglifier-2.7.0/lib/uglifier.rb:3:in `require'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/uglifier-2.7.0/lib/uglifier.rb:3:in `<top (requir
ed)>'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler/runtime.rb:76:in `requi
re'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler/runtime.rb:76:in `block
 (2 levels) in require'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler/runtime.rb:72:in `each'

        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler/runtime.rb:72:in `block
 in require'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler/runtime.rb:61:in `each'

        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler/runtime.rb:61:in `requi
re'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/bundler-1.7.7/lib/bundler.rb:133:in `require'
        from C:/Sites/railsbridge/test_app/config/application.rb:7:in `<top (required)>'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.
rb:79:in `require'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.
rb:79:in `block in server'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.
rb:76:in `tap'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.
rb:76:in `server'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands/commands_tasks.
rb:40:in `run_command!'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.1.8/lib/rails/commands.rb:17:in `<top
(required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

然后，当我尝试安装 execjs 和 execjs --source http://rubygems.org 时，会发生以下情况：

C:\Sites\railsbridge\test_app>gem install execjs 错误：不能找到一个有效的 gem 'execjs' (>= 0)，原因如下：无法从 https://rubygems.org/ 下载数据 - SSL_connect 返回=1 errno=0 state=SSLv3 读取服务器证书 B：证书验证失败（https:// api.rubygems.org/latest_specs.4.8.gz)

C:\Sites\railsbridge\test_app>gem install execjs --source http:// rubygems.org 安装成功 execjs-2.2.2 解析 execjs-2.2.2 的文档完成安装文档 0 秒后 execjs 警告：无法从“https://”中提取数据 rubygems.org/': SSL_connect 返回=1 errno=0 状态=SSLv3 读取服务器证书 B：证书验证失败 (https://api.rubygems.org/latest_specs.4.8.gz) 已安装 1 个 gem

我不知道我做错了什么。我也在 Windows 7 上运行。

更新：execjs 安装正常。但是当我安装 therubyracer 时，我得到了这个：

C:\Sites\railsbridge\test_app>gem install therubyracer 暂时增强 PATH 以包含 DevKit... 构建原生扩展。这可能需要一段时间... 错误：安装 rubyracer 时出错：错误：无法构建 gem 原生扩展。

C:/RailsInstaller/Ruby2.1.0/bin/ruby.exe -r ./siteconf20150127-8476-14s0h51.rb extconf.rb

创建 Makefile 该系统找不到指定的路径。该系统找不到指定的路径。该系统找不到指定的路径。 C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7/ext/libv8/builder.rb:68:in setup_python!': li bv8 requires python 2 to be installed in order to build, but it is currently not available (RuntimeError) from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7/ext/libv8/builder.rb:52:inblock 在 build_libv8 中！来自 C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7/ext/libv8/builder.rb:49:in chdir ' from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7/ext/libv8/builder.rb:49:inbuild _libv8！来自 C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7/ext/libv8/location.rb:24:in inst all!' from extconf.rb:7:in'

extconf 失败，退出代码 1

Gem 文件将继续安装在 C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7 以供检查离子。结果记录到 C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/extensions/x86-mingw32/2.1.0/libv8-3.16.14.7/gem_ make.out

C:\Sites\railsbridge\test_app>

ps：对不起我的格式我正在尝试学习如何正确使用它

【问题讨论】：

您需要nodejs gem，如this question
看来你使用的是windows操作系统，所以去这个链接railsinstaller.org/en下载完整的bundle，它会安装所有的依赖来运行一个rails服务器，虽然安装nodejs会解决这个问题。
我最初从 railsinstaller.org 安装了 ruby 和 rails。我也刚刚安装了节点 gem，但仍然收到相同的消息。

标签： ruby ssl gem

【解决方案1】：

尝试将其添加到 gem 文件中

gem 'execjs'
gem 'therubyracer', :platforms => :ruby

【讨论】：