Ubuntu 12.04 LTS
Ruby ruby 1.9.3dev (2011-09-23 revision 33323) [i686-linux]
Rails 3.2.9
以下是我收到的CSV文件内容：
"date/time","settlement id","type","order id","sku","description","quantity","marketplace","fulfillment","order city","order state","order postal","product sales","shipping credits","gift wrap credits","promotional rebates","sales tax collected","selling fees","fba fees","other transaction fees","other","total"
"Mar 1, 2013 12:03:54 AM PST","5481545091","Order","108-0938567-7009852","ALS2GL36LED","Solar Two Directional 36 Bright White LED Security Flood Light with Motion Activated Sensor","1","amazon.com","Amazon","Pasadena","CA","91104-1056","43.00","3.25","0","-3.25","0","-6.45","-3.75","0","0","32.80"
然而，当我试图解析CSV文件时，我遇到了错误：
1.9.3dev :016 > options = { col_sep: ",", quote_char:'"' }
=> {:col_sep=>",", :quote_char=>"\""}
1.9.3dev :022 > CSV.foreach("/tmp/my_data.csv", options) { |row| puts row }
CSV::MalformedCSVError: Illegal quoting in line 1.
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1925:in `block (2 levels) in shift'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1887:in `each'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1887:in `block in shift'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1849:in `loop'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1849:in `shift'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1791:in `each'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1208:in `block in foreach'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1354:in `open'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1207:in `foreach'
from (irb):22
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/bin/irb:16:in `<main>'
然后我尝试简化数据，即：
"name","age","email"
"jignesh","30","jignesh@example.com"
然而我仍然遇到相同的错误：
1.9.3dev :023 > CSV.foreach("/tmp/my_data.csv", options) { |row| puts row }
CSV::MalformedCSVError: Illegal quoting in line 1.
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1925:in `block (2 levels) in shift'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1887:in `each'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1887:in `block in shift'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1849:in `loop'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1849:in `shift'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1791:in `each'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1208:in `block in foreach'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1354:in `open'
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/csv.rb:1207:in `foreach'
from (irb):23
from /home/jigneshgohel/.rvm/rubies/ruby-1.9.3-rc1/bin/irb:16:in `<main>'
我再次尝试将数据简化如下：
name,age,email
jignesh,30,jignesh@example.com
它有效。请查看下面的输出：
1.9.3dev :024 > CSV.foreach("/tmp/my_data.csv") { |row| puts row }
name
age
email
jignesh
30
jignesh@example.com
=> nil
但我将会收到含有引号数据的CSV文件，所以删除引号不是我真正想要的解决方案。我无法弄清楚是什么原因导致了之前例子中的CSV::MalformedCSVError: Illegal quoting in line 1.
我已通过在文本编辑器中启用“显示空格字符”和“显示行结尾”来验证CSV中没有前导/尾随空格。同时，我已使用以下内容验证了编码。
1.9.3dev :026 > File.open("/tmp/my_data.csv").read.encoding
=> #<Encoding:UTF-8>
注意：我也尝试使用CSV.read，但是遇到了同样的错误。
请问有人能帮我解决这个问题并让我理解出错的原因吗？
=====================
我刚在http://www.ruby-forum.com/topic/448070找到了以下帖子，并尝试了以下内容：
file_data = file.read
file_data.gsub!('"', "'")
arr_of_arrs = CSV.parse(file_data)
arr_of_arrs.each do |arr|
Rails.logger.debug "=======#{arr}"
end
并得到以下输出：
=======["\xEF\xBB\xBF'date/time'", "'settlement id'", "'type'", "'order id'", "'sku'", "'description'", "'quantity'", "'marketplace'", "'fulfillment'", "'order city'", "'order state'", "'order postal'", "'product sales'", "'shipping credits'", "'gift wrap credits'", "'promotional rebates'", "'sales tax collected'", "'selling fees'", "'fba fees'", "'other transaction fees'", "'other'", "'total'"]
=======["'Mar 1", " 2013 12:03:54 AM PST'", "'5481545091'", "'Order'", "'108-0938567-7009852'", "'ALS2GL36LED'", "'Solar Two Directional 36 Bright White LED Security Flood Light with Motion Activated Sensor'", "'1'", "'amazon.com'", "'Amazon'", "'Pasadena'", "'CA'", "'91104-1056'", "'43.00'", "'3.25'", "'0'", "'-3.25'", "'0'", "'-6.45'", "'-3.75'", "'0'", "'0'", "'32.80'"]
由于默认使用逗号字符作为分隔符，导致读取数据出现问题。然而，我尝试使用如下所示的quote_char选项：
因为默认使用逗号字符作为col_sep（列分隔符），这使得正确读取数据变得混乱。不过，我尝试使用类似于以下方式的quote_char选项：
arr_of_arrs = CSV.parse(file_data, :quote_char => "'")
但结果出现了以下错误：
CSV::MalformedCSVError (Illegal quoting in line 1.):
谢谢，Jignesh
sub！(/^\xEF\xBB\xBF/,'')或CSV.foreach("test.csv", encoding: "bom|utf-8")。 - Anand Shah