ruby中发送带附件,中文,html的email

mailfactory是rubyforge上一个简单的邮件发送包, 通过它我们可以很方便的发送带附件和html格式的邮件,不过目前的mailfactory在支持中文上有一些问题, 需要打一个补丁

先需要通过 gem install mailfactory 安装

然后是对mailfactory的补丁,可以直接修改mailfactory的源文件,也可以单独作一个文件mailfactory_enhence.rb,只要在require 'mailfactory'以后require 它就可以了

# 对mailfactory打补丁,增加了一个encoding参数
class MailFactory
  attr_accessor :encoding

  def html=(newhtml)
  @html = "<html>\n<head>\n<meta content=\"text/html;charset=#{encoding}\" http-equiv=\"Content-Type\">\n</head>\n<body bgcolor=\"#ffffff\" text=\"#000000\">\n#{newhtml}\n</body>\n</html>"
  end
  def body_to_s()
  body = Array.new()

  # simple message with one part
  if(!multipart?())
   return(@text)
  else
   body << "This is a multi-part message in MIME format.\r\n\r\n--#{@attachmentboundary}\r\nContent-Type: multipart/alternative; boundary=\"#{@bodyboundary}\""

   if(@attachments.length > 0)
    # text part
    body << "#{buildbodyboundary("text/plain; charset=#{encoding}; format=flowed", '7bit')}\r\n\r\n#{@text}"

    # html part
    body << "#{buildbodyboundary("text/html; charset=#{encoding}", '7bit')}\r\n\r\n#{@html}"

    body << "--#{@bodyboundary}--"

    # and, the attachments
    if(@attachments.length > 0)
     @attachments.each() { |attachment|
      body << "#{buildattachmentboundary(attachment)}\r\n\r\n#{attachment['attachment']}"
     }
     body << "\r\n--#{@attachmentboundary}--"
    end
   else
    # text part
    body << "#{buildbodyboundary("text/plain; charset=#{encoding}; format=flowed", '7bit')}\r\n\r\n#{@text}"

    # html part
    body << "#{buildbodyboundary("text/html; charset=#{encoding}", '7bit')}\r\n\r\n#{@html}"

    body << "--#{@bodyboundary}--"
   end

   return(body.join("\r\n\r\n"))
  end
end
end

最后开始使用: mailfactory的使用非常简单, 例子如下

#使用方法非常简单
    mail=MailFactory.new
    mail.encoding="GBK" #设置encoding
    mail.to=['a@sina.com','b@sina.com'].join(',') #多个收件人
    mail.from='from@host.com'
    mail.subject='subject'
    mail.html='</font color="red">htmlconternt</font>'
    mail.text='please use html view'
    mail.attach('/usr/local/test.file')
    Net::SMTP.start(@smtp_host) do |smtp|
      smtp.send_message(msgstr,from,to)
    end