Question

我认为我的问题与Having problems with Ruby file from Dashing中的问题相同，迄今为止没有答案。

完全问题是当我开始潇洒时，我得到了。

scheduler caught exception:
undefined method `[]' for nil:NilClass
/home/bhladmin/Shopify-dashing-e672d84/dashboard/jobs/twitter_user.rb:19:in `block in <top (required)>'
/usr/lib64/ruby/gems/1.9.1/gems/rufus-scheduler-2.0.23/lib/rufus/sc/jobs.rb:230:in `call'
/usr/lib64/ruby/gems/1.9.1/gems/rufus-scheduler-2.0.23/lib/rufus/sc/jobs.rb:230:in `trigger_block'
/usr/lib64/ruby/gems/1.9.1/gems/rufus-scheduler-2.0.23/lib/rufus/sc/jobs.rb:204:in `block in trigger'
/usr/lib64/ruby/gems/1.9.1/gems/rufus-scheduler-2.0.23/lib/rufus/sc/scheduler.rb:430:in `call'
/usr/lib64/ruby/gems/1.9.1/gems/rufus-scheduler-2.0.23/lib/rufus/sc/scheduler.rb:430:in `block in trigger_job'

19号线上的东西不对，但是我找不到什么......

完整的代码部分如下......

#!/usr/bin/env ruby
require 'net/http'

# Track public available information of a twitter user like follower, follower
# and tweet count by scraping the user profile page.

# Config
# ------
twitter_username = ENV['TWITTER_USERNAME'] || 'foobugs'

SCHEDULER.every '2m', :first_in => 0 do |job|
  http = Net::HTTP.new("twitter.com", Net::HTTP.https_default_port())
  http.use_ssl = true
  response = http.request(Net::HTTP::Get.new("/#{twitter_username}"))
  if response.code != "200"
    puts "twitter communication error (status-code: #{response.code})\n#{response.body}"
  else

    tweets = /profile["']>[\n\t\s]*<strong>([\d.,]+)/.match(response.body)[1].delete('.,').to_i
    following = /following["']>[\n\t\s]*<strong>([\d.,]+)/.match(response.body)[1].delete('.,').to_i
    followers = /followers["']>[\n\t\s]*<strong>([\d.,]+)/.match(response.body)[1].delete('.,').to_i

    send_event('twitter_user_tweets', current: tweets)
    send_event('twitter_user_followers', current: followers)
    send_event('twitter_user_following', current: following)
  end
end

从上一个问题看，从网页中提取数据的方式似乎是问题，但我不太了解Ruby。我已经尝试删除ENV ['TWITTER_USERNAME']部分以确保使用我使用的用户名（不是上面的用户名）。如果我转储原始的html数据，那么它包含我正在搜索的信息，所以我知道该部分正在运行。

Answer 1

我想我已经通过不同的方式解决了这个问题。我已经将代码更改为使用twitter API而不是页面抓取。下面的详细信息......验证和超时不是很好，所以如果有人提示要做得更好，他们会受到欢迎......

#### Get your twitter keys & secrets:
#### https://dev.twitter.com/docs/auth/tokens-devtwittercom
Twitter.configure do |config|
  config.consumer_key = 'YOUR_CONSUMER_KEY'
  config.consumer_secret = 'YOUR_CONSUMER_SECRET'
  config.oauth_token = 'YOUR_OAUTH_TOKEN'
  config.oauth_token_secret = 'YOUR_OAUTH_SECRET'

end

twitter_username = 'foobugs'

MAX_USER_ATTEMPTS = 10
user_attempts = 0

SCHEDULER.every '10m', :first_in => 0 do |job|
  begin
    tw_user = Twitter.user("#{twitter_username}")
    if tw_user
        tweets = tw_user.statuses_count
        followers = tw_user.followers_count
        following = tw_user.friends_count

        send_event('twitter_user_tweets', current: tweets)
        send_event('twitter_user_followers', current: followers)
        send_event('twitter_user_following', current: following)

    end
  rescue Twitter::Error => e
    user_attempts = user_attempts +1
    puts "Twitter error #{e}"
    puts "\e[33mFor the twitter_user widget to work, you need to put in your twitter API keys in the jobs/twitter_user.rb file.\e[0m"
    sleep 5
    retry if(user_attempts < MAX_USER_ATTEMPTS)
  end
end

发布解析来自Twitter的网页数据，用于破坏ruby app

1 个答案: