Ruby - 迭代解析的JSON

Question

我正在尝试从reddit的API迭代解析的JSON响应.

我做了一些谷歌搜索,似乎其他人有这个问题,但没有一个解决方案似乎适合我.Ruby将['data] ['children]视为索引并导致错误,但我只是试图从JSON中获取这些值.有什么建议？

我的代码:

require "net/http"
require "uri"
require "json"

uri = URI.parse("http://www.reddit.com/user/brain_poop/comments/.json")

response = Net::HTTP.get_response(uri)

data = JSON.parse(response.body)

data.each do |child|
    print child['data']['body']
end

我在终端中收到的错误消息:

api-reddit-ruby.rb:12:in `[]': no implicit conversion of String into Integer (TypeError)
from api-reddit-ruby.rb:12:in `block in <main>'
from api-reddit-ruby.rb:11:in `each'
from api-reddit-ruby.rb:11:in `<main>'

Answer 1

你试图迭代data,这是一个哈希,而不是一个列表.您需要通过JSON对象获取子数组data['data']['children']

require "net/http"
require "uri"
require "json"

uri = URI.parse("http://www.reddit.com/user/brain_poop/comments/.json")

response = Net::HTTP.get_response(uri)

data = JSON.parse(response.body)


data['data']['children'].each do |child|
    puts child['data']['body']
end