使用 ruby​​ 1.9.2 你可以使用模式 r:bom|utf-8

With ruby 1.9.2 you can use the mode r:bom|utf-8

text_without_bom = nil #define the variable outside the block to keep the data
File.open('file.txt', "r:bom|utf-8"){|file|
  text_without_bom = file.read
}

或

text_without_bom = File.read('file.txt', encoding: 'bom|utf-8')

或

text_without_bom = File.read('file.txt', mode: 'r:bom|utf-8')

BOM 在文件中是否可用并不重要.

It doesn't matter, if the BOM is available in the file or not.

您也可以将编码选项与其他命令一起使用:

You may also use the encoding option with other commands:

text_without_bom = File.readlines(@filename, "r:utf-8")

(你得到一个包含所有行的数组).

(You get an array with all lines).

或使用 CSV:

require 'csv'
CSV.open(@filename, 'r:bom|utf-8'){|csv|
  csv.each{ |row| p row }
}