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Python3 网络爬虫开发实战

本书介绍了如何利用 Python 3 开发网络爬虫。书中首先详细介绍了环境配置过程和爬虫基础知识;然后讨论了 urllib、requests 等请求库,Beautiful Soup、XPath、pyquery 等解析库以及文本和各类数据库的存储方法;接着通过多个案例介绍了如何进行 Ajax 数据爬取,如何使用 Selenium 和 Splash 进行动态网站爬取;接着介绍了爬虫的一些技巧,比如使用代理爬取和维护动态代理池的方法,ADSL 拨号代理的使用,图形、 极验、点触、宫格等各类验证码的破解方法,模拟登录网站爬取的方法及 Cookies 池的维护。 此外,本书还结合移动互联网的特点探讨了使用 Charles、mitmdump、Appium 等工具实现 App 爬取 的方法,紧接着介绍了 pyspider 框架和 Scrapy 框架的使用,以及分布式爬虫的知识,最后介绍了 Bloom Filter 效率优化、Docker 和 Scrapyd 爬虫部署、Gerapy 爬虫管理等方面的知识。

本书由图灵教育 - 人民邮电出版社出版发行,版权所有,禁止转载。

作者:崔庆才

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elasticsearchtest's Issues

python3网络实战爬虫第二版 ElasticSearch一系列问题

@Germey hello,我在您python3网络爬虫开发实战第二版中,在4.7 elasticsearch这一章学习过程中,发现一些问题,可能是因为版本更新的原因,例如:

from elasticsearch import Elasticsearch
es = Elasticsearch()
result = es.indices.create(index='news',ignore=400)
print(result)

上面的会报错:

ValueError: Either 'hosts' or 'cloud_id' must be specified

然后,当我这么写就不报错了

from elasticsearch import Elasticsearch
es = Elasticsearch(hosts='https://localhost:9200/')
result = es.indices.create(index='news',ignore=400)
print(result)

但是,又出现这样的错误:

elastic_transport.TlsError: TLS error caused by: TlsError(TLS error caused by: SSLError([SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1129)))

然后,这么修改一下:

from elasticsearch import Elasticsearch
es = Elasticsearch(hosts='https://localhost:9200',verify_certs=False/)
result = es.indices.create(index='news',ignore=400)
print(result)

就会有新的错误:

elasticsearch.AuthenticationException: AuthenticationException(401, 'security_exception', 'missing authentication credentials for REST request [/news]')

我是第一次接触elasticsearch,这些问题我没能找到解决办法,所以向您求助。
谢谢!

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