ruby 转化ANSI 编为UTF-8
用到：gem： rchardet19，string.encoding,string.force_encoding

require 'rchardet19' def convert_encode file    string=File.open(file.location,"r+").read #     cd = CharDet.detect(string)    # 获取文件编码   #cd.encoding    if string.encoding != 'UTF-8' && cd.encoding=="utf-8"      string.force_encoding('UTF-8')     elsif string.encoding != 'UTF-8'      string.force_encoding('GBK')     end   File.open(file.location, "w") { |f| f.puts string.encode("UTF-8") }  end