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即使遇到错误，我也想尝试运行我的代码。我将说明我认为我在下面得到错误的位置以及错误是什么：

require 'rubygems'
require 'simple_oauth'
require 'cloudsight'
require 'rubygems'
require 'net/http'
require 'uri'
require 'json'
require 'open-uri'
require 'openssl'
require 'hpricot'


#ALCHEMY

 file='C:\\Users\\ENTER USERNAME\\Desktop\\cloudsight.txt'
 f = File.open(file, "r")
 f.each_line {|line|

 tstart = 'name"=>"'
 tstop = '"'
 term = line[/#{tstart}(.*?)#{tstop}/m, 1]

 url = 'http://access.alchemyapi.com/calls'
 service = '/text/TextGetRankedTaxonomy'
 apikey = '?apikey=ENTER ALCHEMY API KEY'
 thething = '&text='
 termencoded = URI::encode(term)
 fullurl = url + service + apikey + thething + termencoded

 sleep 1
 opener = open(fullurl, 'Accept-Encoding' => '') {|f| f.read } 
 #print opener

我想我在这一点上得到了错误。

 lstart = '<label>/'
 lstop = '</label>'
 label = opener[/#{lstart}(.*?)#{lstop}/m, 1]

 sleep 1
 cstart = '<score>'
 cstop = '</score>'
 confidence = opener[/#{cstart}(.*?)#{cstop}/m, 1]

 #data = label + ',' + confidence + ',' + line
 print label
 print confidence
 print "\n"

 }

这是我似乎得到的错误：

C:/Ruby21/lib/ruby/2.1.0/uri/common.rb:304:in `escape': undefined method `gsub' for nil:NilClass (NoMethodError)

关于如何传递错误/转义/或生成字符串的任何想法？

4

2 回答 2

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我猜错误来自这一行：

termencoded = URI::encode(term)

并且可能正在发生，因为term它是 nil。添加一些调试以查看term在调用该行之前设置的内容。如果您可以term空白，您可以将该行更改为：

termencoded = URI::encode(term.to_s)

我不能说你的程序是否可以接受。

我不会试图抑制错误。有些事情不正常，你应该弄清楚它是什么以及如何处理它。

于 2015-09-17T16:22:06.303 回答
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I solved the problem. Turns out it's an issue on alchemys side in this instance. The taxonomy search just wasn't able to find a term

于 2015-09-18T09:50:00.453 回答