#encoding:utf-8
require 'net/http'
require 'thread'
require 'open-uri'
require 'nokogiri'
require 'date'
$queue = Queue.new
#文章列表頁數
page_nums = 8
page_nums.times do |num|
$queue.push("http://www.cnblogs.com/hongfei/default.html?page="+num.to_s)
end
threads = []
#獲取網頁源碼
def get_html(url)
html = ""
open(url) do |f|
html = f.read
end
return html
end
def fetch_links(html)
doc = Nokogiri::HTML(html)
#提取文章鏈接
doc.xpath('//div[@class="postTitle"]/a').each do |link|
href = link['href'].to_s
if href.include?"html"
#add work to the queue
$queue.push(link['href'])
end
end
end
def save_to(save_to,content)
f = File.new("./"+save_to+".html","w+")
f.write(content)
f.close()
end
#程序開始的時間
$total_time_begin = Time.now.to_i
#開辟的線程數
threadNums = 10
threadNums.times do
threadsThread.new do
until $queue.empty?
url = $queue.pop(true) rescue nil
html = get_html(url)
fetch_links(html)
if !url.include?"?page"
title = Nokogiri::HTML(html).css('title').text
puts "["+ Time.now.strftime("%H:%M:%S") + "]「" + title + "」" + url
save_to("pages/" + title.gsub(/\//,""),html) if url.include?".html"
end
end
end
end
threads.each{|t| t.join}
#程序結束的時間
$total_time_end = Time.now.to_i
puts "線程數：" + threadNums.to_s
puts "執行時間：" + ($total_time_end - $total_time_begin).to_s + "秒"
#程序開始的時間
$total_time_begin = Time.now.to_i
#執行過程
#程序結束的時間
$total_time_end = Time.now.to_i
puts "執行時間：" + ($total_time_end - $total_time_begin).to_s + "秒"
