$ show gsh199449/spider
This repository is a web-based web scraping platform built with Spring MVC and Webmagic. It provides a user interface for configuring and managing web spiders (crawlers), scheduling crawl jobs via Quartz, processing crawled data with NLP (HanLP for keyword/summary/entity extraction), and storing results in Elasticsearch. The platform supports both static and Ajax crawling (via PhantomJS) and includes features for data search, CRUD operations, and export. The architecture follows a layered pattern with controllers, services, DAOs, and models, demonstrating separation of concerns. While the codebase exhibits solid architectural patterns and several reusable components, it shows signs of technical drift due to outdated dependencies (Spring 4.1.9, Webmagic 0.6.0, Bootstrap 4.0.0-alpha, Elasticsearch transport client 5.2.2) and deprecated technologies (PhantomJS).
The LLM identified 3 files worth highlighting for reuse:
Defines a strategy interface for NLP extraction (keywords, summary, named entities) allowing different implementations (e.g., HanLP) to be plugged in. Isolated from crawling logic, demonstrating loose coupling and enabling easy swapping of NLP backends.
Implements a builder pattern for constructing consistent API response objects (success/failure, data, messages). Used across controllers for AJAX responses, demonstrating a clean way to handle service layer results and decouple response formatting from business logic.
Extends Webmagic's HttpClientDownloader to enforce a maximum content length for downloaded files, preventing excessive memory usage. Demonstrates a simple but effective safety wrapper that can be reused in any Webmagic-based crawler.