spider scraper

Copy Code code as follows: #!/usr/bin/env python #-*-Coding:utf-8-*- From scrapy.contrib.spiders import crawlspider, rule From SCRAPY.CONTRIB.LINKEXTRACTORS.SGML import Sgmllinkextractor From Scrapy.selector import Selector From Cnbeta.items import CnbetaitemClass Cbspider (Crawlspider):name = ' Cnbeta 'Allowed_domains = [' cnbeta.com ']Start_urls = [' http://www.jb51.net '] Rules = (Rule (sgmllinkextractor allow= ('/articles/.*\.htm ',)),callback= ' Parse_page ', follow=true),)

more than one robot is limited by the protocol, there must be at least one user-agent record for the file. If the value of the key is set to *, the protocol is valid for any robot, and in the "robots.txt" file, there can be only one record for "user-agent:*". For search engine robots name, please refer to the article "search engine Spider program name Daquan"Disallow:The value of the item is used to describe a URL that you do not want to be accessed,

Source: http://www.howbeauty.org/body-care/229318.htm Talk to your doctor about the advantages and disadvantages of sclerotherapy before you agree to the procedure. with sclerotherapy, there are no guarantees for success (about 10 percent of people see no results at all, even after repeated treatment ). while less expensive than other types of treatment, it may also require more postoperative care, including the wearing of special compression garments. Use sclerotherapy to treat

URL rewrite and Google spider We know that we need to take some measures to search engines for websites. At least we need to rewrite the URL. But the problem is.We found that Google Yahoo spider could not catch the webpage Baidu. All are 500 errors or 302 errors .. dizzy. I had to write down the error.Void application_error (Object sender, eventargs E) { Exception error = server. getlasterror (); String Pa

Copy codeThe Code is as follows: $ useragent = addslashes (strtolower ($ _ SERVER ['HTTP _ USER_AGENT ']); If (strpos ($ useragent, 'googlebot ')! = False) {$ bot = 'Google ';}Elseif (strpos ($ useragent, 'mediapartners-google ')! = False) {$ bot = 'Google Adsense ';}Elseif (strpos ($ useragent, 'baidider ider ')! = False) {$ bot = 'baidu ';}Elseif (strpos ($ useragent, 'sogou spider ')! = False) {$ bot = 'sogou ';}Elseif (strpos ($ useragent, 'sogou

Using php to make the page accessible only by Baidu gogole spider, you can refer to the following if you need it. The difference between a common user and a search engine spider crawling is that the user agent sent, Looking at the website log file, we can find that Baidu spider's name contains Baiduspider, while google's name is Googlebot. in this way, we can determine whether to cancel normal user access

The spider, also known as WebCrawler or robot, is a program that is a collection of roaming Web documents along a link. It typically resides on the server, reads the document using a standard protocol such as HTTP, with a given URL, and then continues roaming until there are no new URLs that meet the criteria, as a new starting point for all of the URLs included in the document. The main function of WebCrawler is to automatically fetch Web documents f

Source: http://www.0531s.com/content-46-1927014-1.htmlYisouspider Spider Crawl Web page can cause the CPU to skyrocket, affect other spiders and user's access, after many experiments, found that IIS comes with URL rewrite can play a role.First select the site you want to mask, and then open the URL rewrite.Open Inbound RuleOpen Add rule, select Request BlockClick OK, in the new pop-up interface, select the user Agent header in the access blocking basi

By skinned mesh tortured for a long time, began to feel skinindices wrong, because the PIX display is full of 0And then followed to find out that the uchar integers were shown in the format of float by the PIX (shown as 0.0000000 instead of the life of the uint shown as 0)Turns into a very small number, so it's 0.00000.So Skinindices is right, and weight looks right, because adding up equals 1.Oh, yes, Phyre's d3d11 to put shader inside the semanticSkinindices:blendindices;Skinweights:blendweigh

Problem description Spider card is a Windows XP operating system comes with a card game, the rules of the game is like this: only to drag the card than her freshman card above (a minimum, K max), if you drag the cards in order to arrange the cards, then these cards are also moving together, The purpose of the game is to all the cards in the same suit from small to large row, for the sake of simplicity, our game only the same suit of 10 cards, from a t

: Print("INFO--Current URL: "%response.url) Json_data= Response.json (). Get ("Data") #Start parsing Data ifJson_data: forIteminchjson_data: _title= Item.get ("title") _imgdict= Item.get ("image_list") #fix the URL, the default image address is a small image, we want a large HD image_imglist = [Str ("http:"+ _.get ("URL"). Replace ("List","Large") for_inch_imgdict]#Create a storage directory_downloaddir =Os.path.join (Self.downl

Apache Log why not record Baidu Spider. This problem is believed that many beginners have basically met, the Apache log default is not to record Baidu Spiders, Google and the major search engine spider program, but only need to modify a place can solve the problem, now directly to the answer to write out:For example, once a friend in Baidu know the question: """"Logformat "%h%l%u%t \%r\"%>s%b \ "%{referer}i

Now many schools in class often have some computer classes, this time always will control your computer, this software is generally red spider, and this software is not easy to close, after the shutdown will automatically restart. I have studied the software can still be closed, today I will tell you the method. But everybody's attention, the class still wants to listen, I just teach everybody to close the method only ~ 1, we must find the Red spider

So yesterday I seriously did a bit more functions, can be a variety of search engine statistical analysis. Can be viewed in multiple time periods. In fact, the code is very simple, in order to more concise, code compression to 6k. Divided into 6 files 1. Setup spilder_install.php 2. Spider record file 3. Spider statistics View files

Recently, a lot of websites have stopped the snapshot update, my hands of three sites have two sites now snapshots are still July 6, only one site operation is normal, I asked a few friends to build stations, they also said that the hands of a lot of snapshots of the site have not been timely updates, the face of Baidu adjustment, As a site webmaster How to avoid the recent Baidu Spider trap it? Let's look at a few traps: 1, 302 Jump, JavaScript jump

There are a lot of superheroes in the world: Batman, Spider-Man, Superman, people who can't write names, and so on. Among them was one called kickass. Today he wanted to imitate Spider-Man, so he chose a row of tall buildings to jump. Specifically, he chose a column of n buildings, numbered from left to right, from 1 to N. At first he was in the first building of the K-tower. Unfortunately, kickass ability

Now to promote the site more and more difficult, in addition to the content of the original requirements of the increase, the spider crawling is not so easy, Baidu is always adjusting the algorithm, spiders are more intelligent. There has been a period of time did not send out the chain, in the promotion of news of the exchange of soft text activities. This week to promote the new station, the home page is very fast, intend to use the home page to pus

The traditional multi-threaded spider program, although the acquisition speed is fast, but obviously do not need all content, but beard eyebrows Cluth, the entire Web page is downloaded as a text to deal with. Because of the uneven content of Web pages, the quality of capture is often not guaranteed; is helpless in the face of information presented by Dynamic technologies such as Ajax. All this has changed since what we have seen, the invention of tec

crawling within a website. And the purpose of the chain is to search engine paving bridge, and in the search spider crawling process, with different link text type of key words tell it this direction is what position, the next direction is what position. Therefore, reasonable keyword layout, reasonable text link is very important. Professional website Construction company Pilotage Technology (www.joyweb.net.cn) that, in fact, search spiders like a pe