ruby 返回jsonp

一： rails中返回jsonp

class BookController < ApplicationController  layout false  def show    res = {:id => 10086, :name => 'CMCC'}    render :json => res, :callback => params[:callback]  endend

二：sinatra中返回jsonp

首先执行：gem install sinatra-jsonp

然后在 Gemfile 里面添加 gem 'sinatra-jsonp'

require 'sinatra'require 'sinatra/jsonp'get '/hello' do  data = ["hello","hi","hallo"]  JSONP data, params[:callback]      # JSONP is an alias for jsonp methodendget '/hi' do  data = ["hello","hi","hallo"]  jsonp data, params[:callback]end