发送带参数的get请求，并解决httpclient编码问题

使用Rails来发送Email. Rails Mailer概貌
1. script/generate mailer postoffice
2. 对你的邮件程序生成一个方法(models/postoffice.rb)
3．生成你自己的邮件template, 使用welcome.text.html.erb 和welcome.text.plain.erb (views/postoffice)
4. 发送信息
5．如果你进行本地php?name=%B2%E2%CA%D4" onclick="tagshow(event)" class="t_tag">测试，确定postfix在运行。

打开你的终端：
add3-imac: jon$ rails mailer_example
    -- output truncated --

add3-imac: jon$ cd mailer_example/

add3-imac:mailer_example jon$ script/generate mailer postoffice
  exists app/models/
  create app/views/postoffice
  exists test/unit/
  create test/fixtures/postoffice
  create app/models/postoffice.rb
  create test/unit/postoffice_test.rb

现在我们为邮件程序生成一个方法：
class Postoffice < ActionMailer::Base 
# located in models/postoffice.rb
# make note of the headers, content type, and time sent
# these help prevent your email from being flagged as spam

 def welcome(name, email)
  @recipients = "jon@addthree.com"
  @from   = params[:contact][:email]
  headers   "Reply-to" => "#{email}"
  @subject  = "Welcome to Add Three"
  @sent_on  = Time.now
  @content_type = "text/html"

  body[:name] = name
  body[:email] = email   
 end

end
现在我们已经产生了我们的方法，需要改变template:
# located in views/postoffice
# we can access the variables we declared in models/postoffice.rb
# body[:name] = name is accessed by @name
# body[:email] = email is accessedby @email

# welcome.text.html.erb
# note the HTML
<p>Welcome to AddThree <i><%= @name %></i>. </p>

<p>The address we have on file for you is <b><%= @email %></b>, please let us know if this is incorrect.</p>

# welcome.text.plain.erb 
Welcome to AddThree <%= @name %>. The address we have on file for you is <%= @email %>, please let us know if this is incorrect.

现在我们的邮件和template都已经准备好了，让我们发送邮件吧:
class Registration < ApplicationController
# controllers/registration_controller.rb
# assume the Registration controller already existed
# assume @user.name and @user.email have been declared

 def send_welcome_email
  # triggered via:
  # http://localhost:3000/registration/send_welcome_email
  # note the deliver_ prefix, this is IMPORTANT
  Postoffice.deliver_welcome(@user.name, @user.email)

  # optional, but I like to keep people informed
  flash[:notice] = "You've successfuly registered. Please check your email for a confirmation!"

  # render the default action
  render :action => 'index' 
 end

end

如果您进行本地测试，确定postfix在运行
add3-imac:mailer_example jon$ sudo postfix start
Password:
postfix/postfix-script: starting the Postfix mail system

Sorry, no time to modify the codes to text style

thanks to http://www.jonathansng.com/ruby- ... end-email-tutorial/
by jonathan, and thanks to jonathan