使用ruby net/smtp發送帶附件的電子郵件

Question

我一直在試圖弄清楚如何使用標準net/smtp將二進制附件發送到我的gmail帳戶。到目前爲止，我已經成功地安裝成功的文本文件 - （基於做了什麼別人）以下適用於這樣的：

#!/usr/bin/env ruby 

require 'net/smtp' 

addressee = 'NAME@EMAIL.COM' 
server = 'smtp.gmail.com' 
port  = 587 
account = 'ACCOUNT' 
from  = addressee 
name  = 'NAME' 
domain = 'gmail.com' 
subject = 'test of smtp using ruby' 
body  = 'Test of SMTP using Ruby.' 
marker = "PART_SEPARATOR" 
filename = "test-attachment" 
filetext = "attachment contents" 

print "Enter password for #{account}: " 
password = $stdin.gets.chomp 

# Define the main headers. 
part1 = <<EOF 
From: #{name} <#{from}> 
To: <#{addressee}> 
Subject: #{subject} 
MIME-Version: 1.0 
Content-Type: multipart/mixed; boundary=#{marker} 
--#{marker} 
EOF 

# Define the message action 
part2 = <<EOF 
Content-Type: text/plain 
Content-Transfer-Encoding:8bit 

#{body} 
--#{marker} 
EOF 

# Define the attachment section 
part3 = <<EOF 
Content-Type: text/plain 
Content-Disposition: attachment; filename="#{File.basename(filename)}" 

#{filetext} 
--#{marker}-- 
EOF 

message = part1 + part2 + part3 

puts message 

smtp = Net::SMTP.new server, port 
smtp.enable_starttls 

smtp.start(domain, account, password, :login) do 
    smtp.send_message message, from, addressee 
end 

問題是與編碼的二進制附件替換文本附件。上述下面的變化看起來應該基於什麼我已經能夠谷歌工作，但不能正確地發送附件：

#!/usr/bin/env ruby 

require 'net/smtp' 

addressee = 'NAME@EMAIL.COM' 
server = 'smtp.gmail.com' 
port  = 587 
account = 'ACCOUNT' 
from  = addressee 
name  = 'NAME' 
domain = 'gmail.com' 
subject = 'test of smtp using ruby' 
body  = 'Test of SMTP using Ruby.' 
marker = "PART_SEPARATOR" 
filename = "test-attachment" 
filetext = "attachment contents" 

print "Enter password for #{account}: " 
password = $stdin.gets.chomp 

# Encode contents into base64 format 
encodedcontent = [filetext].pack("m") 

# Define the main headers. 
part1 = <<EOF 
From: #{name} <#{from}> 
To: <#{addressee}> 
Subject: #{subject} 
MIME-Version: 1.0 
Content-Type: multipart/mixed; boundary=#{marker} 
--#{marker} 
EOF 

# Define the message action 
part2 = <<EOF 
Content-Type: text/plain 
Content-Transfer-Encoding:8bit 

#{body} 
--#{marker} 
EOF 

# Define the attachment section 
part3 = <<EOF 
Content-Type: multipart/mixed; name="#{File.basename(filename)}" 
Content-Transfer-Encoding:base64 
Content-Disposition: attachment; filename="#{File.basename(filename)}" 

#{encodedcontent} 
--#{marker}-- 
EOF 

message = part1 + part2 + part3 

puts message 

smtp = Net::SMTP.new server, port 
smtp.enable_starttls 

smtp.start(domain, account, password, :login) do 
    smtp.send_message message, from, addressee 
end 

誰能告訴我什麼，我做錯了什麼？

Answer 1

我終於成功地發送二進制附件 - 祕密使用

Content-Type: application/octet-stream; name="#{filename}" 
Content-Disposition: attachment; filename="#{filename}"; size=#{size} 

在安裝部

消息（第3部分）。

另一件事，這對一個小測試附件工作正常，但是當我嘗試更大的（140K）附件時，附件被截斷。使用

filecontent = File.binread(pathname) 

而不是

filecontent = File.read(pathname) 

似乎解決了問題。 （我不太清楚爲什麼。）