Python crawler scrapy using proxy configuration

Source: Internet
Author: User
Tags base64

Reprinted from: http://www.python_tab.com/html/2014/pythonweb_0326/724.html

When crawling site content, the most common problem is: the site has limited IP, there will be anti-grab function, the best way is IP rotation crawl (plus agent)

Here's how scrapy Configure the agent for crawling

1. Create a new "middlewares.py" under the Scrapy project

#Importing Base64 library because we ' ll need it only if the proxy we is going to use requires authentication< /c1>ImportBase64#Start your middleware classclassProxymiddleware (object):#Overwrite process request    defprocess_request (self, request, spider):#Set The location of the proxyrequest.meta['Proxy'] ="Http://YOUR_PROXY_IP:PORT"          #Use the following lines if your proxy requires authenticationProxy_user_pass ="Username:password"        #Setup Basic Authentication for the proxyEncoded_user_pass =base64.encodestring (proxy_user_pass) request.headers['proxy-authorization'] ='Basic'+ Encoded_user_pass

2. Add in the project configuration file (./pythontab/settings.py)

Downloader_middlewares = {    '  Scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddleware':,    ' Pythontab.middlewares.ProxyMiddleware ': +,}

Complete.

Python crawler scrapy using proxy configuration

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.