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jsoup: Java Library for HTML Parsing, Cleaning, and Manipulation
jsoup is a Java library designed for working with real-world HTML. It provides a very convenient API for fetching URLs, parsing HTML, interacting with the DOM, using CSS selectors, and cleaning user-submitted HTML against XSS attacks. It's built to handle the messiness of web content encountered in the wild.
Java
Added on 2025年5月6日11,146
Stars2,229
ForksJava
LanguageProject Introduction
Summary
jsoup is a robust open-source Java library specifically built for parsing, manipulating, and cleaning HTML. It aims to provide a simple, efficient, and flexible way for Java developers to handle real-world web content.
Problem Solved
Handling broken or malformed HTML in Java is challenging with standard XML parsers. jsoup provides a forgiving yet powerful parser that makes sense of most HTML found in the wild, offering a clean and easy-to-use API for common web data processing tasks like scraping, cleaning, and manipulation.
Core Features
HTML Parsing and DOM API
Parses HTML into a DOM tree, providing a familiar element-centric API to work with.
CSS Selectors
Finds elements using CSS selectors, making data extraction straightforward and intuitive.
HTML Cleaning (XSS Safety)
Sanitises user-submitted HTML to prevent XSS attacks, allowing configuration of allowed tags and attributes.
Fetching URLs and Files
Provides simple methods to fetch and parse HTML from URLs or files.
Tech Stack
Java
Use Cases
jsoup is suitable for a wide range of applications involving HTML processing in Java. Common use cases include:
Web Scraping and Data Extraction
Details
Programmatically fetch web pages and extract specific data (like product information, news articles, etc.) using CSS selectors or DOM traversal.
User Value
Automates data collection from the web, providing structured data for analysis or integration.
HTML Cleaning and Input Sanitization
Details
Sanitize user-submitted HTML content (e.g., from rich text editors) to prevent injection attacks like XSS, ensuring only safe HTML is stored or displayed.
User Value
Enhances application security by filtering potentially malicious HTML content.
HTML Document Manipulation
Details
Parse existing HTML documents, modify elements or attributes, and output the changed HTML, useful for content transformation or templating.
User Value
Allows dynamic modification of HTML structures based on application logic.
HTML Content Analysis
Details
Analyze the structure or content of HTML pages for purposes like link checking, semantic analysis, or generating summaries.
User Value
Provides programmatic access to HTML structure and content for detailed analysis.
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