scrapy crawl

Importscrapy fromAutopjt.itemsImportmyitem fromScrapy.httpImportRequestclassAutospdspider (scrapy. Spider): Name="Fulong_spider"Start_urls= ['http://category.dangdang.com/pg1-cid4007379.html'] Url2= ('http://dangdang.com','http://jd.com','http://tianmao.com',) defstart_requests (self): forUrlinchSELF.URL2:yieldself.make_requests_from_url (URL)defParse (self, Response): Item=myitem () item['name'] =response.xpath ('/html/head/title/text ()'). Extrac

#scrapy Crawl Web site IP#-*-coding:utf-8-*-Importscrapy fromXici.itemsImportXiciitemclassXicispiderspider (scrapy. Spider): Name="Xicispider"Allowed_domains= ["Www.xicidaili.com/nn"] Start_urls= ['http://www.xicidaili.com/nn/'] defParse (self, Response): Item=Xiciitem () foreachinchRESPONSE.CSS ('#ip_list TR'): IP= Each.css ('Td:nth-child (2):: Text'). Extrac

The goal is to crawl all the product data information on the site http://www.muyingzhijia.com/, including the first class category of the product, class two, title, brand, price.Search, Python's scrapy is a good reptile frame, so based on Scrapy wrote a simple crawler.First analyze the product page, on the http://www.muyingzhijia.com/main page, there are links us

This example describes how Python uses Scrapy to crawl Web site sitemap information. Share to everyone for your reference. Specific as follows: Import refrom scrapy.spider import basespiderfrom scrapy import logfrom scrapy.utils.response import Body_or_strfrom SCRA Py.http Import requestfrom scrapy.selector import Htmlxpathselectorclass sitemapspider (basespide

Python uses Scrapy to crawl the sister chart, pythonscrapy Python Scrapy crawlers, I heard that my sister figure is quite popular. I crawled it all over the site. I made more than 8000 images last Monday. Share with you. Core crawler code # -*- coding: utf-8 -*-from scrapy.selector import Selectorimport scrapyfrom scrapy.contrib.loader import ItemLoader, Identity

Scrapy the page to grasp the time, the saved file appears garbled, after analysis is the reason for encoding, only need to convert the code to Utf-8 can, snippets.... import Chardet .....Content_Type = Chardet.detect (html_content) #print (content_type[' encoding ')) ifcontent_type[' encoding ']! = "UTF -8 ": Html_content =html_content.decode (content_type[' encoding ') html_content = Html_content.encode (" Utf-8 ") Open (filename, "WB"). Write (Htm

First, go to the Unique Gallery, click on the HD wallpaper Item above: After entering, pull down, find is normal drop pull no Ajax load, pull to the last side of the end, you can see that this column has a total of 292 pages: Flip the page to see what happens to the URL, and you can see that only the last number representing the page number is changing: Open F12, Refresh, in the original request code has access to enter the details page of the link address, you can

[‘MYSQL_HOST‘], db=settings[‘MYSQL_DBNAME‘], user=settings[‘MYSQL_USER‘], passwd=settings[‘MYSQL_PASSWD‘], charset=‘utf8‘, # 编码要加上，否则可能出现中文乱码问题 cursorclass=MySQLdb.cursors.DictCursor, use_unicode=False, ) dbpool = adbapi.ConnectionPool(‘MySQLdb‘, **dbparams) # **表示将字典扩展为关键字参数,相当于host=xxx,db=yyy.... return cls(dbpool) # 相当于dbpool付给了这个类，self中可以得到 # pipeline默认调用 def process_item(self, item, spider): que

]}}skip={page_index}limit={page_count}sort=[[% 22specificitysummary%22,1],[%22host%22,1],[%22uniquename%22,1],[%22format%22,1]]'defget_json_from_url (URL): R=requests.get (URL)returnR.json () ['Results']defInit_url_by_parms (page_count=40, Page_index=1): if notPage_countor notPage_index:return "' returnUrl_template.replace ('{Page_index}', str ((page_index-1) * page_count)). Replace ('{Page_count}', str (page_count))if __name__=='__main__': URL= Init_url_by_parms (Page_count=page_count,

post carryLook at the results.3 before the request is the landing page with a GET request, now need to do a step login process becomes a POST request, that is, the second step request, the same is done in the parse function4 meta={' Cookiejar ': True} means using the licensed cookie to access pages that need to be logged in to view5 Obtain the cookie after the request, respond to the cookie, and then proceed to get the personal center:Look at the results:Python3 under

We have introduced the method of using nodejs to crawl pictures of sister-in-law papers. let's take a look at how Python is implemented. For more information, see. Python Scrapy crawlers, I heard that my sister figure is quite popular. I crawled it all over the site. I made more than 8000 images last Monday. Share with you. Core crawler code # -*- coding: utf-8 -*-from scrapy.selector import Selectorimpor

In front of us to introduce the use of Nodejs to crawl sister paper pictures of the method, the following we look at how to achieve the use of Python, there is a need for small partners under the reference bar. Python scrapy Crawler, heard that sister figure is very fire, I climbed the whole station, last Monday, a total of more than 8,000 photos. Share it with you. Core Crawler Code ? 1 2

In the previous blog http://zhouxi2010.iteye.com/blog/1450177 The introduction of the use of Scrapy crawl Web pages, but only to crawl the normal HTML link, the AJAX request for the Web page is not caught, but the actual application of the AJAX request is very common, so here in the record crawl Ajax page method. is st

I would like to analyze the Internet industry recruiting interns nationwide, by crawling Zhaopin, get 15,467 data, and import MySQL In the items.py: ImportScrapy fromScrapy.httpImportRequest fromlxmlImportEtree fromZhaopinzhilian.itemsImportZhaopinzhilianitemclassRecuritspider (scrapy. Spider): name =' Recurit ' Allowed_domains = [' zhaopin.com '] #start_urls = [' http://www.zhaopin.com/'] Header = {"User-agent":"mozilla/5.0 (Windows NT 6.1; Win64;

1. To crawl the data of the investment method of Globebill, crawl the content as follows:2. Check the URL to discover:When you click on the next page, the links in the Address bar do not change. You can tell that the data of this page is uploaded by post.Say the difference between get and post:Get explicit arguments, and post is implicit.The URL of get will have a limit, and post does not.Get no post securi

://DOC.SCRAPY.ORG/EN/L Atest/topics/items.htmlfrom Scrapy.item Import Item, field class Dmozitem (item): Name = field () Description = Field () URL = Field ()Iv. Rewriting pipeline.py#-*-Coding:utf-8-*-# Define Here the models for your scraped items## see documentation in:# HTTP://DOC.SCRAPY.ORG/EN/L Atest/topics/items.htmlfrom Scrapy.item Import Item, field class Dmozitem (item): Name = field () Description = Field () URL = Field ()V. Execute in the DMOZ folder root directoryScrapy

Just imagine that the previous experiments and examples have only one spider. However, the actual development of the crawler certainly more than one. In this case, there are a few questions: 1, how to create multiple crawlers in the same project? 2. How do you run them up when you have multiple crawlers?Description: This article is based on the previous articles and experiments on the basis of the completion. If you miss, or have doubts, where you can view:Install Python crawler