From: LAMBEAU Bernard <blambeau@...>
Date: 2010-08-27T19:16:12+09:00
Subject: Re: error handling with exceptions in multi-thread download

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You probably have a TimeOut error. And the errors actually comes from:

        rescue Timeout::Error => e
          puts    "#{web}  failed"

because web is not defined there.

B

On Fri, Aug 27, 2010 at 11:58 AM, Pen Ttt <myocean135@yahoo.cn> wrote:

>
>    there are three  program fragments,all of them  have same problems,
>    all  of them  can run ,but when i downloaded  30% data,an error
> ocurr
>    undefined local variable or method `web' for Data:Class (NameError)
>    cthreaddown  is an  array  which contains many web.
>    would you kind to tell  me how to fix  it?
>    p1
>     [code]
>     for page_to_fetch in cthreaddown
>     threads<<Thread.new(page_to_fetch) do |web|
>         datafile="/home/pt/stock/"
>         open(datafile,'a+'){|refile|
>         open(web){|webfile|
>              refile.puts  webfile.read
>              puts  "#{web}  is over"
>         }}
>        end
>      end
>     threads.each {|thr|
>        begin
>         thr.join
>         rescue Timeout::Error => e
>           puts    "#{web}  failed"
>         rescue NameError => e
>           puts    "#{web}  failed"
>         rescue => e
>           puts    "#{web}  failed"
>        end
>       }
>      [/code]
>     p2
>     [code]
>     for page_to_fetch in cthreaddown
>     threads<<Thread.new(page_to_fetch) do |web|
>         datafile="/home/pt/stock/"
>         open(datafile,'a+'){|refile|
>         begin
>        open(web){|webfile|
>              refile.puts  webfile.read
>              puts "#{web}  is over"
>         }}
>        rescue NameError => e
>           puts    "#{web}  failed"
>        rescue => e
>           puts  "#{web}  wrong"
>         end
>       end
>      end
>      threads.each {|thr|  thr.join }
>     [/code]
>
>     p3
>     [code]
>     for page_to_fetch in cthreaddown
>     threads<<Thread.new(page_to_fetch) do |web|
>         datafile="/home/pt/stock/"
>         open(datafile,'a+'){|refile|
>         begin
>        open(web){|webfile|
>              refile.puts  webfile.read
>              puts "#{web}  is over"
>         }}
>        rescue NameError => e
>           puts    "#{web}  failed"
>        rescue => e
>           puts  "#{web}  wrong"
>         end
>       end
>      end
>   threads.each {|thr|
>        begin
>         thr.join
>         rescue Timeout::Error => e
>           puts    "#{web}  failed"
>         rescue NameError => e
>           puts    "#{web}  failed"
>         rescue => e
>           puts    "#{web}  failed"
>        end
>       }
> --
> Posted via http://www.ruby-forum.com/.
>
>

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