Yes, ScrapySharp supports XPath queries. ScrapySharp is a .NET library inspired by the Scrapy framework in Python, and it is used for web scraping in .NET applications. It provides a convenient way to parse HTML content and extract data using both CSS selectors and XPath queries.
When using ScrapySharp, you typically work with the HtmlAgilityPack
(HAP) which is an underlying library that ScrapySharp extends. HtmlAgilityPack
is an HTML parser that builds a Document Object Model (DOM) tree which can then be queried with XPath expressions.
Here's an example of how you can use ScrapySharp along with HtmlAgilityPack
to perform web scraping with XPath queries:
First, if you haven't already, you need to install the ScrapySharp and HtmlAgilityPack NuGet packages:
Install-Package ScrapySharp
Install-Package HtmlAgilityPack
Then you can use the following C# code to scrape data using XPath:
using System;
using ScrapySharp.Extensions;
using ScrapySharp.Network;
using HtmlAgilityPack;
namespace ScrapySharpExample
{
class Program
{
static void Main(string[] args)
{
ScrapingBrowser browser = new ScrapingBrowser();
// This is the page we will be scraping.
WebPage page = browser.NavigateToPage(new Uri("http://example.com"));
// Use the HtmlAgilityPack HtmlDocument object
HtmlDocument document = page.Html;
// Perform XPath query
HtmlNodeCollection nodes = document.DocumentNode.SelectNodes("//div[@class='some-class']");
// Iterate over the selected nodes (if any)
if (nodes != null)
{
foreach (var node in nodes)
{
Console.WriteLine(node.InnerText.Trim());
}
}
else
{
Console.WriteLine("No nodes found");
}
}
}
}
In this example, we're performing an XPath query to select all <div>
elements with the class some-class
and then iterating through the collection of nodes to print their inner text.
Please note that web scraping should be performed responsibly and in compliance with the website's terms of service and robots.txt file. Additionally, websites' structures can change over time, so XPath queries might need to be updated if the structure of the target website changes.