| API | SOURCE |
|---|---|
| Google GSON | http://code.google.com/p/google-json/ |
| SOJO | http://sojo.sourceforge.net/ |
| org.json (by Douglas Crockford) | http://www.json.org/java |
| json-lib | http://sourceforge.net/projects/json-lib/ |
| json-io | http://code.google.com/p/json-io |
| jsontools | http://jsontools.berlios.de/ |
| jsonbeans | http://code.google.com/p/jsonbeans/ |
| ActiveSupport JSON | http://api.rubyonrails.org/classes/ActiveSupport/JSON.html |
| Yajl | https://github.com/brianmario/yajl-ruby |
| Oj | https://github.com/ohler55/oj |
Ruby on Rails提供了额外的功能，这使得转换Ruby对象为JSON更容易。下面的控制器使用ActionController的渲染方法输出地址对象到JSON:
class Person
attr_accessor :first_name, :last_name
def initialize(first_name=nil, last_name=nil)
@first_name = first_name
@last_name = last_name
end
end
class MyController < ApplicationController
def index
person = Person.new("John", "Doe")
respond_to do |format|
format.html # index.html.erb
format.json { render :json => person}
end
end
end
Rails的应用控制器负责编写对象为JSON格式或者解析JSON文件为对象。所以没有必要在这里写to_json方法