gzh8579 (辉)

rails server 启动失败！

gzh8579 — Mon, 03 Mar 2014 12:59:10 +0800

又来求组了。 rails 应该是安装成功了！ rails new myapp 之后想先启动服务器看一下 rails server 没成功，错误信息：

D:>cd myapp

D:\myapp>rails s [31mCould not find gem 'rails (= 4.0.2) x86-mingw32' in the gems available on his machine.[0m [33mRun bundle install to install missing gems.[0m

D:\myapp>

是个什么没安装吗？谢谢~

安装 Rails，各种不成功啊·求帮助！

gzh8579 — Thu, 27 Feb 2014 13:13:32 +0800

Rails 安装了好久，一直没成功 gem install rails 下载下来 gem 也不行~ 真的无助了~。。都不知道那种方法能安装了~ 各位有没有好的教程！

Ruby 连接不上 sql 数据库

gzh8579 — Wed, 26 Feb 2014 14:12:34 +0800

请各位帮看下，今天使用 gem install mysql 安装了驱动，但还是连接不到数据库。数据库在 windows 上正常登陆访问 Ruby 代码都是书上的例子和网上找的“ 代码： #encoding:utf-8 require"mysql" begin my =Mysql.connect('127.1.0.1','rubytest','hui8579','MININT-TGJ8CT5\SQL2005') puts "服务器版本："+my.get_server_info rescue Mysql::Error => err puts"错误代码：#{err.errno}" ensure my.close if my end

错误信息如下： C:/Ruby193/lib/ruby/1.9.1/mysql.rb:103:in initialize': No connection could be made because the target machine actively refused it. - connect(2) (Errno::ECONNREFUSED) from C:/Ruby193/lib/ruby/1.9.1/mysql.rb:103:innew' from C:/Ruby193/lib/ruby/1.9.1/mysql.rb:103:in real_connect' from C:/Ruby193/lib/ruby/1.9.1/mysql.rb:91:ininitialize' from C:/Ruby193/lib/ruby/1.9.1/mysql.rb:1085:in new' from C:/Ruby193/lib/ruby/1.9.1/mysql.rb:1085:inreal_connect' from D:/Ruby_test/test_24/tieba.rb:4:in `

' [Finished in 1.3s with exit code 1]

请帮忙看下，万分感谢· ruby 版本：1.9.3 sql 版本：sql2005

求助安装 gtk2

gzh8579 — Mon, 24 Feb 2014 17:36:17 +0800

ruby 环境（1.9.3-xp 的）能正常工作。

网上 gtk 教程第一段代码就运行不正常。 #!/usr/bin/ruby require "gtk2" class RubyApp < Gtk::Window def initialize
super
set_title "Center"
signal_connect "destroy" do Gtk.main_quit
end
set_default_size 250, 200
set_window_position bGtk::Window::POS_CENTER show end end
Gtk.init
window = RubyApp.new Gtk.main

报如下错误： C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:55:in require': cannot load such file -- gtk2 (LoadError) from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:55:inrequire' from D:/Ruby_test/gtk_test/test1.rb:3:in `

' [Finished in 0.4s with exit code 1]

请帮忙看下，感激！