CAPTCHA-Verwaltung für die Überwachung der Auktionsseite

Auktionsplattformen schützen Listungsdaten und Suchfunktionen mit reCAPTCHA v2. CAPTCHAs erscheinen am häufigsten bei schnellen Suchanfragen, Detailansichten von Einträgen und der Suche nach Angebotshistorien. So gewährleisten Sie eine zuverlässige Überwachung aller Auktionsseiten.

Wo CAPTCHAs auf Auktionsseiten ausgelöst werden

Auktionsüberwachung mit CAPTCHA-Lösung

import requests
import time
import re
from datetime import datetime

class AuctionMonitor:
    def __init__(self, api_key):
        self.api_key = api_key
        self.session = requests.Session()
        self.session.headers.update({
            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
        })

    def search_listings(self, auction_url, query, category=None):
        """Search auction listings, solving CAPTCHAs when triggered."""
        params = {"q": query}
        if category:
            params["category"] = category

        response = self.session.get(
            f"{auction_url}/search", params=params
        )

        if self._has_captcha(response.text):
            site_key = self._extract_site_key(response.text)
            token = self._solve_recaptcha(site_key, f"{auction_url}/search")
            response = self.session.post(
                f"{auction_url}/search",
                data={**params, "g-recaptcha-response": token}
            )

        return self._parse_listings(response.text)

    def monitor_listing(self, auction_url, listing_id):
        """Get current bid and listing details."""
        url = f"{auction_url}/item/{listing_id}"
        response = self.session.get(url)

        if self._has_captcha(response.text):
            site_key = self._extract_site_key(response.text)
            token = self._solve_recaptcha(site_key, url)
            response = self.session.post(url, data={
                "g-recaptcha-response": token
            })

        return self._parse_listing_detail(response.text)

    def track_bids(self, auction_url, listing_ids, interval=60):
        """Track bid changes across multiple listings."""
        history = {lid: [] for lid in listing_ids}

        while True:
            for listing_id in listing_ids:
                try:
                    detail = self.monitor_listing(auction_url, listing_id)
                    previous = history[listing_id]

                    if previous and detail["current_bid"] != previous[-1]["current_bid"]:
                        print(f"Bid change on {listing_id}: "
                              f"${previous[-1]['current_bid']} → ${detail['current_bid']}")

                    history[listing_id].append(detail)
                except Exception as e:
                    print(f"Error checking {listing_id}: {e}")

            time.sleep(interval)

    def _has_captcha(self, html):
        return "g-recaptcha" in html or "recaptcha" in html.lower()

    def _extract_site_key(self, html):
        match = re.search(r'data-sitekey="([^"]+)"', html)
        if match:
            return match.group(1)
        match = re.search(r"sitekey['\"]?\s*[:=]\s*['\"]([^'\"]+)", html)
        if match:
            return match.group(1)
        raise ValueError("Could not find reCAPTCHA site key")

    def _solve_recaptcha(self, site_key, page_url):
        resp = requests.post("https://ocr.captchaai.com/in.php", data={
            "key": self.api_key,
            "method": "userrecaptcha",
            "googlekey": site_key,
            "pageurl": page_url,
            "json": 1
        })
        task_id = resp.json()["request"]

        for _ in range(60):
            time.sleep(3)
            result = requests.get("https://ocr.captchaai.com/res.php", params={
                "key": self.api_key,
                "action": "get",
                "id": task_id,
                "json": 1
            })
            data = result.json()
            if data["status"] == 1:
                return data["request"]

        raise TimeoutError("reCAPTCHA solve timed out")

    def _parse_listings(self, html):
        from bs4 import BeautifulSoup
        soup = BeautifulSoup(html, "html.parser")

        def text_or_none(node):
            return node.text.strip() if node and node.text else None

        def attr_or_none(node, attr):
            return node.get(attr) if node else None

        listings = []
        for item in soup.select(".listing-item, .auction-item"):
            listings.append({
                "title": text_or_none(item.select_one(".title")),
                "current_bid": text_or_none(item.select_one(".price, .bid")),
                "time_left": text_or_none(item.select_one(".time-left")),
                "url": attr_or_none(item.select_one("a"), "href")
            })
        return listings

    def _parse_listing_detail(self, html):
        from bs4 import BeautifulSoup
        soup = BeautifulSoup(html, "html.parser")

        def text_or_none(node):
            return node.text.strip() if node and node.text else None

        return {
            "title": text_or_none(soup.select_one("h1, .item-title")),
            "current_bid": text_or_none(soup.select_one(".current-bid, .price")),
            "bid_count": text_or_none(soup.select_one(".bid-count")),
            "time_left": text_or_none(soup.select_one(".time-remaining")),
            "checked_at": datetime.now().isoformat()
        }

# Usage
monitor = AuctionMonitor("YOUR_API_KEY")
listings = monitor.search_listings(
    "https://auctions.example.com",
    "vintage electronics",
    category="collectibles"
)

Preisalarmsystem (JavaScript)

class AuctionTracker {
  constructor(apiKey) {
    this.apiKey = apiKey;
    this.watchList = new Map();
  }

  addWatch(listingId, url, maxPrice) {
    this.watchList.set(listingId, { url, maxPrice, history: [] });
  }

  async checkAll() {
    const alerts = [];

    for (const [id, watch] of this.watchList) {
      try {
        const detail = await this.fetchListing(watch.url);
        watch.history.push(detail);

        const price = parseFloat(detail.currentBid.replace(/[^0-9.]/g, ''));
        if (price >= watch.maxPrice * 0.9) {
          alerts.push({
            listing: id,
            price,
            threshold: watch.maxPrice,
            message: `Price approaching limit: $${price} / $${watch.maxPrice}`
          });
        }
      } catch (error) {
        alerts.push({ listing: id, error: error.message });
      }
    }

    return alerts;
  }

  async fetchListing(url) {
    const response = await fetch(url);
    const html = await response.text();

    if (html.includes('g-recaptcha')) {
      return this.solveAndFetch(url, html);
    }

    return this.parseDetail(html);
  }

  async solveAndFetch(url, html) {
    const siteKeyMatch = html.match(/data-sitekey="([^"]+)"/);
    if (!siteKeyMatch) throw new Error('No reCAPTCHA site key found');

    const submitResp = await fetch('https://ocr.captchaai.com/in.php', {
      method: 'POST',
      body: new URLSearchParams({
        key: this.apiKey,
        method: 'userrecaptcha',
        googlekey: siteKeyMatch[1],
        pageurl: url,
        json: '1'
      })
    });

    const { request: taskId } = await submitResp.json();

    for (let i = 0; i < 60; i++) {
      await new Promise(r => setTimeout(r, 3000));
      const result = await fetch(
        `https://ocr.captchaai.com/res.php?key=${this.apiKey}&action=get&id=${taskId}&json=1`
      );
      const data = await result.json();
      if (data.status === 1) {
        // Resubmit with token
        const response = await fetch(url, {
          method: 'POST',
          body: new URLSearchParams({ 'g-recaptcha-response': data.request })
        });
        return this.parseDetail(await response.text());
      }
    }

    throw new Error('reCAPTCHA solve timed out');
  }

  parseDetail(html) {
    // Parse auction listing details from HTML
    return {
      currentBid: html.match(/current.?bid[^>]*>([^<]+)/i)?.[1]?.trim(),
      bidCount: html.match(/(\d+)\s*bids?/i)?.[1],
      timeLeft: html.match(/time.?(?:left|remaining)[^>]*>([^<]+)/i)?.[1]?.trim(),
      checkedAt: new Date().toISOString()
    };
  }
}

// Usage
const tracker = new AuctionTracker('YOUR_API_KEY');
tracker.addWatch('item-123', 'https://auctions.example.com/item/123', 500);
tracker.addWatch('item-456', 'https://auctions.example.com/item/456', 200);
const alerts = await tracker.checkAll();

Überwachungsstrategie

Reduzierung der CAPTCHA-Häufigkeit

Fehlerbehebung

Verwandte Leitfäden

• CaptchaAI Schnellstart
• API-Antwortformate und Fehlercodes
• reCAPTCHA v2 per API lösen