phantomjs

Many websites use JavaScript ... Web content is dynamically generated by JS, some JS events triggered by the page content changes, links open. Even some websites do not work at all without JS, and instead return you with something like "Please open browser js".There are four solutions for JavaScript support:1, write code to simulate the relevant JS logic.2, call an interface browser, similar to a variety of widely used in testing, selenium this kind.3, using a non-interface browser, a variety of

[Python crawler] Selenium targeted crawling of huge numbers of exquisite pictures on tigers and basketball,Preface: As a fan who watches basketball from an early age, he will often go to forums such as tigers, basketball and wet pages. There will be a lot of exquisite pictures in the Forum, including NBA teams, CBA stars, lace news, shoes and beautiful women, etc. If one piece of right-click and save it as one, it really hurts. Write a program as a programmer!Therefore, I use Python + Selenium +

/json/110.84.0.129 (looks very good, seemingly directly returned to the Chinese city information, documents in Ip-api.com/docs/api:json)7. http://www.locatorhq.com/ip-to-location-api/documentation.php (this is to register to use, still not used it) (2nd freegeoip.net Web site and generation of IP data, code in: HTTPS://GITHUB.COM/FIORIX/FREEGEOIP) Why are the 4th and 52 of them Web queries also recommended? Because of two reasons, one is that they provide more accurate information, the second is

Selenium does not have a browser, and it needs to be combined with a third-party browser. For example, run selenium on Firefox.Phantomjs is a "headless" browser. It loads the site into memory and executes the JavaScript on the page, but it does not show the user the graphical interface of the page. By combining selenium and PHANTOMJS, you can run a very powerful web crawler that can handle cookies, javascript,header, and anything you need to do.Seleni

/usr/local/bin/node/usr/local/lib/node_modules/npm/bin/npm-cli.js Install-- Scripts-prepend-node-path=auto npm WARN deprecated [emailprotected]: Use the built-in module in node 9.0.0 or newer, instead NPM WARN deprecated [emailprotected]: Please update to Minimatch 3.0.2 or higher to avoid A RegExp DoS issue npm WARN deprecated [emailprotected]: Redos vulnerability parsing Set-cookie https://nodesecurity.io/advisories/130 npm WARN deprecated [emailprotected]: Use UUID module instead npm

Program Description: Grab the live room number of the Betta live platform and the number of spectators, and finally count the total number of people and the total number of spectators at a given moment.Process Analysis:First, enter the fighting fish home http://www.douyu.com/directory/allEnter the platform homepage, to the bottom of the page to click on the next page, found that the URL address has not changed, so that the use of URLLIB2 send requests will not get full data, then we can use sele

fromSeleniumImportwebdriverchrome_opt=Webdriver. Chromeoptions () prefs= {"profile.managed_default_content_settings.images": 2}chrome_opt.add_experimental_option ("prefs", prefs) browser=Webdriver. Chrome (Executable_path="E:\Python Project\scrapyproject\_articlespider\chromedriver_win32\chromedriver.exe", Chrome_options=chrome_opt) Browser.get ("https://www.taobao.com/")#browser.quit ()basic use of hidden Chrom graphical interfaceNote: Download related modules are currently only available in L

different browser (such as Firefox, Chrome) between the switch, we can specifically write a function to launch a different browserIv. Reference Code# Coding:utf-8From selenium import Webdriverdef browser (browser= ' Firefox '):‘‘‘Open Browser "Firefox", "Chrome", "ie", "PHANTOMJS"UsageDriver = Broswer ("Chrome")‘‘‘Tryif browser = = "Firefox":Driver = Webdriver. Firefox ()Return driverelif Browser = = "Chrome":Driver = Webdriver. Chrome ()Return drive

Taobao. NPM uses Taobao mirrored installation package NPM uses the registry attribute to specify the warehouse, so configure this property. Several ways to modify the NPM configuration properties are detailed in the official documentation. Here only to modify the registry method, the following three kinds of any one can: Modify ~/.NPMRC file (No on their own new one), write Registry = https://registry.npm.taobao.org Use the command NPM Config Set registry https://registry.npm.taobao.org (effect

', NPM err! Syscall: ' Access ', NPM err! Path: '/opt/moudles/node-v8.9.4-linux-x64/lib/node_modules '} npm err! NPM err! Please try running this command again as Root/administrator. NPM err! A Complete log of this run can is found IN:NPM err! /home/es/.npm/_logs/2018-02-25t02_49_37_372z-debug.log A look will know is the permissions issue, because my nodejs is root installed, here I am an ES user [Es@biluos elasticsearch-head-master]$ su root Password: [root@biluos elasticsearch-head-

not contain this information. This is because this part of the information is dynamically generated with JS. So what do we do in this situation? The answer is to use selenium and PHANTOMJS, the relevant concepts can be their own Baidu. In short, PHANTOMJS is a browser without interface, and selenium is a tool to test the browser, combined with these 2, we can parse the dynamic page. The code to ge

Case ONE: Website simulation login# douban.pyfrom Selenium Import webdriverfrom selenium.webdriver.common.keys import keysimport timedriver = Webdriver. PHANTOMJS () driver.get ("http://www.douban.com") # Enter the account password Driver.find_element_by_name ("Form_email"). Send_keys ("[ Email protected] Driver.find_element_by_name ("Form_password"). Send_keys ("xxxxxxxx") # Analog Click Login Driver.find_element_ By_xpath ("//input[@class = ' bn-sub

This blog is mainly used to describe how to use SELENIUM+PHANTOMJS simulation landing watercress, without considering the issue of verification code, more information, please refer to: Python Learning Guide #-*-coding:utf-8-*- fromSeleniumImportWebdriver fromSelenium.webdriver.common.keysImportKeysImportTime#如果获取页面时获取不到文本内容, add the following parametersDriver=Webdriver. PHANTOMJS (Service_args=['--igno

are try above code, you are wont get anything for review content. And more interestingly if your try print ur.read () after the second line and ignore the rest of code, "ll get a None obj Ect. Why? The issue is this macys reviews have been populated by Ajax calls from their Web server. In the other words, this isn't a statically loaded HTML page. So, the basically using urllib does not work here. How to scrape dynamically Loaded Web Pages? To resolve above issue, your need to figure out how Mac

+phantomjs Phantomjs is a browser without interface, the industry called Headless Browser (headless), because there is no interface and rendering, Its speed is much better than the interface of the browser, which is exactly reptilian like, so outspoken Later, Chrome and Firefox launched headless mode, and run very smoothly, Phantomjs has died, so we did not menti

analysis features can directly see the page loading stages of the screenshot: Note: The entire test results please click here The above diagram visually shows two important points of view of the Browsing class Web site: Screen time and first screen time, that is, how long the user can see the content on the page, and how often the first screen rendering is complete (including the elements such as picture loading complete). These two points directly determine how long the user waits to see the

!== ' undefined ', -Mspointer = navigator.mspointerenabled navigator.msmaxtouchpoints !window. Pointerevent, thepointer = (window. Pointerevent navigator.pointerenabled navigator.maxtouchpoints) | |Mspointer, - -Ie3d = ie (' transition 'inchDoc.style), -Webkit3d = (' Webkitcssmatrix 'inchwindow) (' M11 'inch NewWindow. Webkitcssmatrix ()) !Android23, +gecko3d = ' mozperspective 'inchDoc.style, -Opera3d = ' otransition 'inchDoc.style; + A at varRetina = ' Devicepixelratio 'inchWindow

://who_am_i.com/a.php")Print(S.text)Perhaps sometimes a login window pops up, and requests can handle it gracefully. import requests from requests.auth import authbase from requests.auth import Httpbasicauthauth = Httpbasicauth ( "username ", " password " ) R = Requests.post (url= " http://who_am_i.com//login.php " , Auth=auth) print (R.text) At the same time there are login needs to verify the code problem, this is not very good to deal with, the general idea is to write cod

provide how many interfaces, to integrate some extension into the more troublesome.?Using WebBrowserPHANTOMJS is a non-interface browser of the WebKit kernel, one of the features is the easy integration of JavaScript scripts, so it is convenient to expand development, it is also very convenient to use the server side of the UI control can not be used. At present, most of the internet is this kind of program, I am here to transcribe a few articles read, do not do a detailed introduction:

performance is very bad and it is not recommended to use this method. Because Python and js have poor performance, if this is done, it will consume a lot of CPU resources and ultimately can only achieve extremely low crawling efficiency. Js Code is run by the js engine.Python can only obtain the original HTML, CSS, and JS Code through HTTP requests. I do not know whether there is a JS engine written in Python, and it is estimated that there is little demand. I usually use