Linux 下安装JRuby

安装ruby

cd

git clone https://github.com/rbenv/rbenv.git ~/.rbenv

echo ‘export PATH="$HOME/.rbenv/bin:$PATH"‘ >> ~/.bashrc

echo ‘eval "$(rbenv init -)"‘ >> ~/.bashrc

exec $SHELL

git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build

echo ‘export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"‘ >> ~/.bashrc

exec $SHELL

rbenv install 2.3.1

rbenv global 2.3.1

ruby -v

安装Bundler

        gem install bundler
    

安装NodeJS

        node -vcurl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
    

        sudo apt-get install -y nodejs
    

安装Rails

        gem install rails -v 4.2.6

        rbenv rehash
    

版本号可以通过tab提示获得最新版本号

第一个网站

使用SQLite3测试：

        #### If you want to use SQLite (not recommended)
    

        rails new myapp
    

        #### If you want to use MySQL
    

        rails new myapp -d mysql
    

        #### If you want to use Postgres
    

        # Note that this will expect a postgres user with the same username
    

        # as your app, you may need to edit config/database.yml to match the
    

        # user you created earlier
    

        rails new myapp -d postgresql
    

        # Move into the application directory
    

        cd myapp
    

        # If you setup MySQL or Postgres with a username/password, modify the
    

        # config/database.yml file to contain the username/password that you specified
    

        # Create the database
    

        rake db:create
    

        rails server
    

打开 http://localhost:3000 即看到封面。

第一个CRUD功能

rails generate scaffold Person first_name:string last_name:string phone_number:string address:text

rake db:migrate

rake db:migrate RAILS_ENV=production

现在打开 http://localhost:3000/people 即有一个人员管理CRUD页面。

Jruby下运行Rails

安装Java

先卸载openjdk：

yum -y remove java*

安装oracle jdk

sudo rpm -i jdk-8u112-linux-x64.rpm

安装Jruby

56 rbenv install --list

57 rbenv global jruby-9.1.5.0

58 jruby –v

修改Gemfile

去掉自动生成的：

gem ‘activerecord-jdbcsqlite3-adapter‘

在末尾增加：

platform :jruby do

gem ‘activerecord-jdbc-adapter‘, git: ‘https://github.com/jruby/activerecord-jdbc-adapter.git‘, branch: ‘rails-5‘

gem ‘activerecord-jdbcsqlite3-adapter‘, git: "https://github.com/jruby/activerecord-jdbc-adapter.git", branch: ‘rails-5‘

gem ‘listen‘

end

运行

bundle install

jruby –S rails server

原文：http://www.cnblogs.com/inshua/p/6053895.html