phantomjs

the form of a Web page. Here you will find that you have a more than one in the directory of your book project called_book file directory, and the files in this directory, that is, the generated staticWebsite content. Using the build parameter to generate to the specified directory Unlike the static web site files generated directly from the preview, using this command,You can enter the content into the directory you want: $ mkdir/tmp/gitbook $ gitbook Build--output=/tmp/gitbook

decompression: Python setup.py install (or pip install--upgrade pip)4. Installing SCRAPY+SELENIUM+PHANTOMJS: https://pypi.python.org/packages/source/S/Scrapy/Scrapy-1.0.3.tar.gzInstall after decompression: python setup.py install (can also be pip install scrapy installed with the command)Note: Using the pip install scrapy installation may be due to network exceptions or downloading other dependent library times errors, you can download the dependent

Running Plantomjs 2 on REDHAT5, the following error occurredBIN/PHANTOMJS:/lib64/libz.so.1:no version information available (required by BIN/PHANTOMJS)BIN/PHANTOMJS:/usr/lib64/libstdc++.so.6:version ' glibcxx_3.4.9 ' not found (required by BIN/PHANTOMJS)BIN/PHANTOMJS:/usr/li

Set proxy IP in Firefox Method_1 From selenium import webdriverprofile = Webdriver. Firefoxprofile () profile.set_preference (' Network.proxy.type ', 1) profile.set_preference (' Network.proxy.http ', ' 127.0.0.1 ') profile.set_preference (' Network.proxy.http_port ', 17890) # intprofile.update_preferences () Driver = Webdriver. Firefox (firefox_profile=profile) driver.get (' HTTP://HTTPBIN.ORG/IP ') Method_2 From selenium import webdriverfrom selenium.webdriver.common.proxy import Proxyfrom se

Getting a snapshot of a Web page and generating thumbnails can be done in two steps: 1, get a snapshot of the Web page 2. Generate thumbnail image Get a snapshot of a Web page Here we use PHANTOMJS to achieve. For detailed usage of PHANTOMJS, refer to the official website. http://phantomjs.org/ 1, installation My environment is CentOS6.5, install the direct download tarball then decompression can be.

PHANTOMJS is a non-interface, scriptable WebKit browser engine that natively supports a variety of Web standards: DOM manipulation, CSS selectors, JSON, canvas, and SVG.Selenium supports PHANTOMJS, so it won't pop up a browser when it's running. Moreover, the operation efficiency of PHANTOMJS is also very high, it also supports various parameter configurations an

The centos server has installed the phantomjs binary file because it needs to call phantomjs. In addition, it has tried to output phantomjs -- version on putty: 1.9.8. then I tried: {code ...} wondering, try again: {code ...} google for a long time, some people... the centos server has installed the phantomjs binary fi

Phantomjs is an engine that can be used across platforms. It uses js script policies and command lines to execute webkit for page loading and statistics. YSlow: analyzes page elements to rate and grade pages. Pagespeed analyzes page elements, rates and recommendations for modification. (Nginx and apache have related plug-ins. At the webserver layer, these elements that affect the page speed will be processed, such as compressing the blank space and me

excavator technology? Search for Python and crawler frameworks on bing. Find common frameworks. Scrapy seems to be a good choice. As for the advantages of other frameworks, Xiao Miao did not elaborate, at least this framework was previously heard. But some problems are found during implementation. scrapy cannot directly capture dynamic pages. The cartoons of websites that meow needs to crawl are generated using Ajax. You need to analyze various types of data by yourself, which is a little troub

The function is timed every day, and the intercepted images are sent automatically via email. Description code comments are very detailed, do not do more instructions, the need for friends to view the code, The main file mail.js, file Capturepart1.js,capturepart2.js,capturepart3.js, here only shows capturepart1.js the other two similar. It is important to note that there are login rights to the site must set a cookie, need to intercept high-quality pictures, the interception time must be set lon

ObjectiveIf you want to run the same set of test code with multiple browsers, Driver=webdriver. Firefox () driver here can't be written dead, you can parameterize the name of the browser.Follow-up if you want to implement multi-threaded and start the browser to execute the use case, with the Tomorrow module, set the number of threads to apply it.Launch browser1. In order to achieve the flexible switching of multiple browsers, you can start the browser to write a function, parameters with the bro

htmlunitdriver in the internal use is httpunit, so use HttpUnit will encounter the same problem, I also did the experiment, it is true. Through Thread.Sleep (2000) to wait for the completion of the parsing of JS, I think the method is not advisable. Uncertainty is too great, especially in large-scale gripping work.Summing up, Webdriver is designed for testing the framework, although in accordance with its principle can be used to assist the crawler to get the HTML page containing dynamic conten

say such things you dare to use in the crawler? I'm afraid of it.In addition there is someone recommend the use of httpunit, in fact, Webdirver htmlunitdriver in the internal use is httpunit, so use HttpUnit will encounter the same problem, I also did the experiment, it is true. Through Thread.Sleep (2000) to wait for the completion of the parsing of JS, I think the method is not advisable. Uncertainty is too great, especially in large-scale gripping work.Summing up, Webdriver is designed for t