method_missing是Ruby元编程中的常见技术,基本思想是通过实现方法来回调的,本文是武林技术频道小编和大家分享的Ruby中使用mechanize批量下载照片的方法,希望对你学习有帮助!
class Renren
def initialize(e,p)
@agent = Mechanize.new
@page = @agent.get('http://3g.renren.com/')
@page = @page.form_with(:method => 'POST') do |r|
r.email = e
r.password = p
end.submit
end
def fetch_other_photo(album_link,foldername)
photo_urls = []
puts Iconv.conv("gb2312", "utf-8", "开始分析相册地址.....")
begin
user_id,album_id = parse_album_uri(album_link)
rescue
puts Iconv.conv("gb2312", "utf-8", "您的相册地址不正确,请重新输入!")
return
end
page = @agent.get("http://3g.renren.com/album/wgetalbum.do?id=#{user_id}&owner=#{album_id}")
puts Iconv.conv("gb2312", "utf-8", "正在获取所有照片地址.....")
loop do
page.links_with(:href => /http:////3g/.renren/.com//album//wgetphoto/.do?/).each do |link|
photo = link.click
photo_urls << photo.link_with(:text => "下载该图").href
end
break if page.link_with(:text => "下一页").nil?
page = page.link_with(:text => "下一页").click
end
if photo_urls.length > 0
puts Iconv.conv("gb2312", "utf-8", "开始下载相册.....")
unless File.directory?("#{foldername}")
Dir.mkdir("#{foldername}")
end
Dir.chdir("#{foldername}") do |path|
photo_urls.each do |photo_url|
@agent.get(photo_url) do |photo|
puts Iconv.conv("gb2312","utf-8","正在保存文件#{photo.filename}……已经下载#{((photo_urls.index(photo_url)+1).to_f/photo_urls.length*100).to_i}%")
photo.save
end
end
end
puts Iconv.conv("gb2312","utf-8","相册下载完毕.....")
else
puts Iconv.conv("gb2312","utf-8","相册内没有照片哟~")
end
end
private
def parse_album_uri(uri)
uri = uri.chomp("#thumb")
uri = uri.split("?")
if uri.length > 1 and uri[1].include?("owner")
uri = uri[1].split("&")
user_id = uri[0].split("=")[1]
album_id = uri[1].split("=")[1]
else
uri = uri[0].split("/")
album_id = uri[4]
user_id = uri[5].split("-")[1]
end
return user_id,album_id
end
end
print Iconv.conv("gb2312","utf-8","用户名:")
username = gets.chomp()
print Iconv.conv("gb2312","utf-8","密码:")
password = gets.chomp()
renren = Renren.new(username,password)
loop do
print Iconv.conv("gb2312","utf-8","粘贴相册地址:")
uri = gets.chomp()
renren.fetch_other_photo(uri, username)
print Iconv.conv("gb2312","utf-8","按0退出程序,按其它键继续下载其它相册:")
break if gets.chomp() == "0"
end
通过以上的介绍,相信大家已经明了Ruby中使用mechanize批量下载照片的方法,不过在实际操作的时候,程序员一定要谨慎,选择武林技术频道网进行学习,会让您受益匪浅哦!
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