flutter pub add web_scraper根據套件公開資料產生的選型評估，僅供參考。
一個輕量級的 Flutter/Dart 套件，用於透過抓取標籤及其屬性來提取 HTML 內容，並轉換為結構化的 Dart 清單與映射。非常適合解析靜態網頁或從 HTML 源取得資料，而無需進行完整的 DOM 操作。它支援多種平台，包括行動裝置、Web 與桌面端，使其成為需要從 HTML 回應中提取結構化資料的跨平台應用程式的多功能選擇。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
A very basic web scraper implementation to scrap html elements from a web page.
Pull requests are most welcome.
In your pubspec.yaml root add:
dependencies:
web_scraper:
then,
import 'package:web_scraper/web_scraper.dart';
Note that as of version 0.0.6, the project supports not only Flutter projects, but also Dart projects.
final webScraper = WebScraper('https://webscraper.io');
if (await webScraper.loadWebPage('/test-sites/e-commerce/allinone')) {
List<Map<String, dynamic>> elements = webScraper.getElement('div.thumbnail > div.caption', ['h4']);
print(elements);
}
Checkout web_scraper_test.dart file to have closer look on all functionalities.
| Method | Description | Arguments | Return Type |
|---|---|---|---|
| loadWebPage | Loads the webpage into response object and then parse it into the document object | String route | Future <bool> |
| loadFromURL | Loads the webpage from provided URL into response object and then parse it into the document object | String page | Future <bool> |
| loadFromString | Loads the webpage from a String (usually stored by the getPageContent method) into response object and then parse it into the document object. This operation is completely synchronous and exists as a helper method to perform compute() flutter operations and avoid jank |
String responseBodyAsString | Future <bool> |
| getPageContent | Returns webpage's html in string format | Void | String body |
| getElement | Returns List of elements found at specified address | String address, List <String> attributes |
List <Map<String, dynamic>> |
| getElementTitle | Returns List of element titles found at specified address | String address | List <String> |
| getElementAttribute | Returns List of elements single attribute found at specified address (if you wish to get multiple attributes at once, please use getElement instead) |
String address, List <String> attributes |
List <String> |
| getAllScripts | Returns the list of all data enclosed in script tags of the document | Void | List <String> |
| getScriptVariables | Returns Map between given variable names and list of their occurence in the script tags | List <String> variableNames |
Map <String, dynamic> |
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