Dynamic webpage data acquisition method based on WebKit browser engine

Abstract

The invention discloses a dynamic webpage data acquisition method based on a WebKit browser engine. The dynamic webpage data acquisition method comprises the following steps of: sending an http request to a server, receiving original webpage data and constructing a document object module (DOM) tree, wherein the step of sending the http request, receiving the original webpage data, resolving js and constructing the DOM tree is realized by a WebKit bottom layer; aiming at different websites, maintaining corresponding configuration files, wherein the configuration files comprise js codes which trigger corresponding events and are transmitted to js execution interfaces provided by the WebKit in the form of a character string; and the WebKit updates the DOM tree according to the corresponding events; calling an I / O interface of the WebKit, converting the DOM tree into an html format and outputting the DOM tree in the form of the character string. By the method, the requirement of expandability is met in a configuration file manner, asynchronous parallel processing between a browser and the server is realized, the burden of the server is relieved, and a user experience is enhanced.

Description

technical field [0001] The invention relates to the field of computer information technology, in particular to a method for collecting dynamic page data based on a WebKit browser engine. Background technique [0002] With the rise of Web2.0, AJAX (Asynchronous JavaScript and XML, asynchronous JavaScript and XML) technology is all the rage. The way of asynchronous interaction between the client and the server not only reduces the pressure on the server, but also brings a better user experience. . However, a large number of dynamic web pages generated by using this technology have brought new difficulties to network data acquisition. Traditional web data collection tools such as web crawlers for collecting static web pages can capture far less content than the content presented on the page. A large number of dynamic web pages The inability to obtain the useful information in the network makes it difficult to carry out the work with network data as the main processing object, ...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the current research: First, the current research is mainly aimed at designing a general method for large-scale web crawlers to crawl dynamic web pages. Acquisition) support effect is not ideal; Second, most of the schemes are more complicated to implement and not suitable for small-scale real-time data acquisition needs

[0006] At present, it is mainly aimed at designing a general method for large-scale web crawlers to crawl dynamic web pages, and the support effect for some targeted and directional data collection (such as the collection of product information on specific forums or commercial websites) is not ideal; secondly, most of the solutions are relatively complicated to implement. , not suitable for small-scale real-time data collection needs

Images