Web scraping, web harvesting, or web data extraction is data scraping used for extracting data from websites. Web scraping software may access the World Wide Web directly using the Hypertext Transfer Protocol, or through a web browser. While web scraping can be done manually by a software user, the term typically refers to automate processes implemented using a bot or web crawler.
1, 安装chrome扩展程序:./chrome_plugin，设置模式，可读取和更改网站数据：在wsjs.saic.gov.cn上