Scrapy爬取Moneycontrol印度指数页面时，正确XPath/CSS选择器无返回结果的问题求助

Let's break down and fix the scraping issues you're facing with the Moneycontrol Indian Indices page:

First, Fix the Escaped Characters in Your Selectors #

Looking at your code, you’re using HTML-escaped characters (" instead of ", > instead of >) which won’t work with Scrapy’s XPath/CSS selectors. These are HTML entities, and Scrapy expects raw syntax for selector queries.

Here are the corrected versions of your code:

• Fixed XPath:

  countries = response.xpath('//*[@id="indices_stocks"]/div[2]/div/div/div/div[2]/table/tbody[2]/tr/td[1]/p/a/text()').getall()
  

• Fixed CSS Selector:

  countries = response.css('#indices_stocks > div.indices > div > div > div > div.pinned > table > tbody:nth-child(2) > tr > td:nth-child(1) > p > a::text').getall()
  

Check if the Content is Dynamically Loaded #

Moneycontrol often loads table data via JavaScript (AJAX calls or client-side rendering), which means Scrapy’s default response only captures the initial static HTML—not the data you’re targeting.

To verify this:

1. Run view(response) in your Scrapy spider to open the captured HTML in a browser. If the table is missing, you’re dealing with dynamic content.
2. For dynamic content, use Scrapy’s integration with tools like Playwright to render the page fully. Here’s a quick example setup:

   from scrapy_playwright.page import PageCoroutine
   
   class MoneycontrolSpider(scrapy.Spider):
       name = 'moneycontrol'
       start_urls = ['https://www.moneycontrol.com/markets/indian-indices/']
   
       custom_settings = {
           'DOWNLOAD_HANDLERS': {
               "https": "scrapy_playwright.handler.ScrapyPlaywrightDownloadHandler",
           },
           'PLAYWRIGHT_LAUNCH_OPTIONS': {
               'headless': True,
           },
       }
   
       def start_requests(self):
           for url in self.start_urls:
               yield scrapy.Request(
                   url,
                   meta={
                       'playwright': True,
                       'playwright_page_coroutines': [
                           PageCoroutine('wait_for_selector', '#indices_stocks table'),
                       ],
                   },
               )
   
       def parse(self, response):
           # Use your corrected selectors here
           countries = response.xpath('//*[@id="indices_stocks"]/div[2]/div/div/div/div[2]/table/tbody[2]/tr/td[1]/p/a/text()').getall()
           yield {'countries': countries}
   

Verify Selector Validity in Browser DevTools #

Before relying on your selectors, test them directly in your browser’s Developer Tools:

1. Open the Moneycontrol page, right-click the element you want to scrape, and select "Inspect".
2. In the DevTools console, test your XPath with $x('your-xpath-here') or CSS selector with $$('your-css-selector-here').
3. Note: Browsers sometimes auto-add <tbody> tags to tables even if they aren’t in the raw HTML. If your selector includes tbody but it’s missing from the actual page source, try removing it (e.g., use //table/tr instead of //table/tbody/tr).

内容的提问来源于stack exchange，提问作者Dhinesh Mathiyalagan