Question

我在Ruby 1.9.3上有一些脚本：

require "net/imap"
imap = Net::IMAP.new(mail_imap_server)
imap.login(mail_login, mail_password)
imap.select("INBOX")
puts imap.search(["FROM", "homer@simpson.com"])
imap.logout
imap.disconnect

如果存在所需的消息，那么一切都很好。如果缺少所需的消息，则会出现错误：

/opt/local/lib/ruby1.9/1.9.1/net/imap.rb:1332:in `block in search_internal': undefined method `[]' for nil:NilClass (NoMethodError)
from /opt/local/lib/ruby1.9/1.9.1/monitor.rb:211:in `mon_synchronize'
from /opt/local/lib/ruby1.9/1.9.1/net/imap.rb:1326:in `search_internal'
from /opt/local/lib/ruby1.9/1.9.1/net/imap.rb:752:in `search'
from ./mail.rb:12:in `mail'
from ./mail.rb:26:in `<main>'

我该如何解决这个问题？

Answer 1

首先检查结果中是否有消息，以防万一

require "net/imap" 
imap = Net::IMAP.new(mail_imap_server) 
imap.login(mail_login, mail_password) 
imap.select("INBOX")
begin
  messages = imap.search(["FROM", "homer@simpson.com"]) 
  puts messages if messages.length > 0
rescue
  puts "Error while retrieving the message" 
end
imap.logout 
imap.disconnect

如何在Ruby中使用net / imap在邮箱中搜索邮件？

1 个答案: