http://ruby.bastardsbook.com/で提供されている Ruby チュートリアルを行っていたところ、次のコードに遭遇しました。
require "open-uri"
remote_base_url = "http://en.wikipedia.org/wiki"
r1 = "Steve_Wozniak"
r2 = "Steve_Jobs"
f1 = "my_copy_of-" + r1 + ".html"
f2 = "my_copy_of-" + r2 + ".html"
# read the first url
remote_full_url = remote_base_url + "/" + r1
rpage = open(remote_full_url).read
# write the first file to disk
file = open(f1, "w")
file.write(rpage)
file.close
# read the first url
remote_full_url = remote_base_url + "/" + r2
rpage = open(remote_full_url).read
# write the second file to disk
file = open(f2, "w")
file.write(rpage)
file.close
# open a new file:
compiled_file = open("apple-guys.html", "w")
# reopen the first and second files again
k1 = open(f1, "r")
k2 = open(f2, "r")
compiled_file.write(k1.read)
compiled_file.write(k2.read)
k1.close
k2.close
compiled_file.close
コードは次のトレースで失敗します。
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:277:in `open_http': 403 Forbidden (OpenURI::HTTPError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:616:in `buffer_open'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:164:in `open_loop'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:162:in `catch'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:162:in `open_loop'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:132:in `open_uri'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:518:in `open'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/open-uri.rb:30:in `open'
from /Users/arkidmitra/tweetfetch/samecode.rb:11
私の問題は、コードが失敗することではなく、r2 を Steve_Jobs 以外に変更すると、コードが機能することです。ここで何が起きてるの?