rails 创建简单应用

开始rails之旅
1，创建应用
D:\ror>rails new myapp
      create 
      create  README
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
      create  app
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/views/layouts/application.html.erb
      create  app/mailers
      create  app/models
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/secret_token.rb
      create  config/initializers/session_store.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  doc
      create  doc/README_FOR_APP
      create  lib
      create  lib/tasks
      create  lib/tasks/.gitkeep
      create  log
      create  log/server.log
      create  log/production.log
      create  log/development.log
      create  log/test.log
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
      create  public/favicon.ico
      create  public/index.html
      create  public/robots.txt
      create  public/images
      create  public/images/rails.png
      create  public/stylesheets
      create  public/stylesheets/.gitkeep
      create  public/javascripts
      create  public/javascripts/application.js
      create  public/javascripts/controls.js
      create  public/javascripts/dragdrop.js
      create  public/javascripts/effects.js
      create  public/javascripts/prototype.js
      create  public/javascripts/rails.js
      create  script
      create  script/rails
      create  test
      create  test/performance/browsing_test.rb
      create  test/test_helper.rb
      create  test/fixtures
      create  test/functional
      create  test/integration
      create  test/unit
      create  tmp
      create  tmp/sessions
      create  tmp/sockets
      create  tmp/cache
      create  tmp/pids
      create  vendor/plugins
      create  vendor/plugins/.gitkeep

2，启动服务
D:\ror>cd myapp

D:\ror\myapp>rails server
Could not find gem 'sqlite3-ruby (>= 0, runtime)' in any of the gem sources.
Try running `bundle install`.
  ---回过头来想想，下面的步骤或许都不需要，只要运行下bundle install就行了（未验证）
3，安装sqlite3-ruby
D:\ror\myapp>gem install sqlite3-ruby

=============================================================================

  You've installed the binary version of sqlite3-ruby.
  It was built using SQLite3 version 3.6.23.1.
  It's recommended to use the exact same version to avoid potential issues.

  At the time of building this gem, the necessary DLL files where available
  in the following download:

  http://www.sqlite.org/sqlitedll-3_6_23_1.zip

  You can put the sqlite3.dll available in this package in your Ruby bin
  directory, for example C:\Ruby\bin

=============================================================================

Successfully installed sqlite3-ruby-1.3.1-x86-mingw32
1 gem installed
Installing ri documentation for sqlite3-ruby-1.3.1-x86-mingw32...
Installing RDoc documentation for sqlite3-ruby-1.3.1-x86-mingw32...

4，再次启动服务，跳出一个错误框，见附件，提示
没有找到sqlite3.dll,因此这个应用程序未能启动，重新安装应用程序可能会解决这个问题
D:\ror\myapp>rails server
c:/ruby192/lib/ruby/gems/1.9.1/gems/sqlite3-ruby-1.3.1-x86-mingw32/lib/sqlite3.rb:6:in `require': no such file to load -- sqlite3/sqlite3_native (LoadError)
from c:/ruby192/lib/ruby/gems/1.9.1/gems/sqlite3-ruby-1.3.1-x86-mingw32/lib/sqlite3.rb:6:in `rescue in <top (required)>'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/sqlite3-ruby-1.3.1-x86-mingw32/lib/sqlite3.rb:2:in `<top (required)>'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:64:in `require'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:64:in `block (2 levels) in require'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:62:in `each'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:62:in `block in require'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:51:in `each'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler/runtime.rb:51:in `require'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/bundler-1.0.3/lib/bundler.rb:112:in `require'
from D:/ror/myapp/config/application.rb:7:in `<top (required)>'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/railties-3.0.1/lib/rails/commands.rb:28:in `require'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/railties-3.0.1/lib/rails/commands.rb:28:in `block in <top (required)>'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/railties-3.0.1/lib/rails/commands.rb:27:in `tap'
from c:/ruby192/lib/ruby/gems/1.9.1/gems/railties-3.0.1/lib/rails/commands.rb:27:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

－－不急，上面安装完sqlite3－ruby，有提示http://www.sqlite.org/sqlitedll-3_6_23_1.zip 下载获得sqlite3.dll，放到c:\ruby192\bin下。照做。

5，再次启动服务，成功
D:\ror\myapp>rails server
=> Booting WEBrick
=> Rails 3.0.1 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2010-10-20 01:49:57] INFO  WEBrick 1.3.1
[2010-10-20 01:49:57] INFO  ruby 1.9.2 (2010-08-18) [i386-mingw32]
[2010-10-20 01:49:57] INFO  WEBrick::HTTPServer#start: pid=5376 port=3000
6，访问http://localhost:3000/，成功进入欢迎首页You’re riding Ruby on Rails!