药房价格比较的验证码处理

构建药房价格比较工具意味着从多个药房门户、药品定价数据库和保险处方集收集定价数据。其中许多来源都使用验证码保护其定价页面 - 特别是搜索表单和结果页面上的 reCAPTCHA v2。以下是处理它们的方法。

验证码出现在药房门户中的位置

基本工作流程

import requests
import time

session = requests.Session()
session.headers.update({
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
})

def solve_recaptcha(site_key, page_url):
    resp = requests.post("https://ocr.captchaai.com/in.php", data={
        "key": "YOUR_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": "YOUR_API_KEY",
            "action": "get",
            "id": task_id,
            "json": 1
        })
        data = result.json()
        if data["status"] == 1:
            return data["request"]
    raise TimeoutError("Solve timed out")

def search_drug_prices(drug_name, zipcode):
    search_url = "https://pharmacy.example.com/search"

    # Load the search page to get the site key
    page = session.get(search_url)

    # Extract reCAPTCHA site key
    import re
    match = re.search(r'data-sitekey="([^"]+)"', page.text)
    site_key = match.group(1)

    # Solve the CAPTCHA
    token = solve_recaptcha(site_key, search_url)

    # Submit the search with token
    results = session.post(search_url, data={
        "drug": drug_name,
        "zip": zipcode,
        "g-recaptcha-response": token
    })

    return parse_prices(results.text)

多药房比较

比较多个来源的价格：

PHARMACY_SOURCES = [
    {
        "name": "PharmacyA",
        "url": "https://pharmacya.example.com/pricing",
        "captcha_type": "recaptcha_v2"
    },
    {
        "name": "PharmacyB",
        "url": "https://pharmacyb.example.com/drugs",
        "captcha_type": "turnstile"
    },
    {
        "name": "PharmacyC",
        "url": "https://pharmacyc.example.com/search",
        "captcha_type": "image"
    }
]

def compare_drug_price(drug_name, zipcode):
    results = []

    for source in PHARMACY_SOURCES:
        try:
            prices = fetch_prices(
                source["url"],
                source["captcha_type"],
                drug_name,
                zipcode
            )
            results.append({
                "source": source["name"],
                "prices": prices,
                "status": "success"
            })
        except Exception as e:
            results.append({
                "source": source["name"],
                "error": str(e),
                "status": "failed"
            })

    return sorted(results, key=lambda r: r.get("prices", {}).get("lowest", float("inf")))

处理不同的验证码类型

药房门户使用各种验证码提供商：

def fetch_prices(url, captcha_type, drug_name, zipcode):
    page = session.get(url)

    if captcha_type == "recaptcha_v2":
        import re
        match = re.search(r'data-sitekey="([^"]+)"', page.text)
        token = solve_recaptcha(match.group(1), url)
        field_name = "g-recaptcha-response"

    elif captcha_type == "turnstile":
        import re
        match = re.search(r'data-sitekey="(0x[^"]+)"', page.text)
        token = solve_turnstile(match.group(1), url)
        field_name = "cf-turnstile-response"

    elif captcha_type == "image":
        img_data = extract_captcha_image(page.text)
        token = solve_image_captcha(img_data)
        field_name = "captcha"

    return session.post(url, data={
        "drug": drug_name,
        "zip": zipcode,
        field_name: token
    })

重复搜索的会话管理

药品价格比较需要多次搜索。管理会话以最大程度地减少验证码遭遇：

class PharmacySession:
    def __init__(self, base_url):
        self.session = requests.Session()
        self.base_url = base_url
        self.searches_since_captcha = 0

    def search(self, drug_name, zipcode):
        result = self.session.post(f"{self.base_url}/search", data={
            "drug": drug_name,
            "zip": zipcode
        })

        if self.is_captcha_page(result.text):
            token = self.solve_page_captcha(result.text)
            result = self.session.post(f"{self.base_url}/search", data={
                "drug": drug_name,
                "zip": zipcode,
                "g-recaptcha-response": token
            })
            self.searches_since_captcha = 0
        else:
            self.searches_since_captcha += 1

        return result

    def is_captcha_page(self, html):
        return "g-recaptcha" in html or "cf-turnstile" in html

    def solve_page_captcha(self, html):
        import re
        match = re.search(r'data-sitekey="([^"]+)"', html)
        return solve_recaptcha(match.group(1), self.base_url)

JavaScript 实现

async function comparePharmacyPrices(drugName, zipCode, sources) {
  const results = await Promise.all(
    sources.map(async (source) => {
      try {
        const price = await fetchDrugPrice(source, drugName, zipCode);
        return { source: source.name, price, status: 'success' };
      } catch (error) {
        return { source: source.name, error: error.message, status: 'failed' };
      }
    })
  );

  return results
    .filter(r => r.status === 'success')
    .sort((a, b) => a.price - b.price);
}

async function fetchDrugPrice(source, drugName, zipCode) {
  // Solve CAPTCHA for this source
  const token = await solveCaptcha(source.siteKey, source.url);

  const response = await fetch(source.url, {
    method: 'POST',
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    body: new URLSearchParams({
      drug: drugName,
      zip: zipCode,
      'g-recaptcha-response': token
    })
  });

  return parsePrice(await response.text());
}

速率限制注意事项

药房门户密切监控访问模式：

故障排除

常问问题

我可以同时比较多少个药房来源？

CaptchaAI 处理并行求解。您可以同时解决多个药房门户的验证码。实际限制取决于您的 CaptchaAI 余额和每个门户的速率限制。

药房门户是否经常更改其验证码类型？

一些门户网站定期更新其验证码实施。通过检查提取是否仍能找到站点密钥来监视更改。 CaptchaAI 支持所有主要的验证码类型，因此切换提供商不需要改变您的解决方法。

品牌药品定价门户和仿制药定价门户之间有区别吗？

验证码处理类似。仿制药数据库可能使用更简单的图像验证码，而品牌药房门户网站倾向于使用 reCAPTCHA v2 或 Turnstile。

相关文章

• 如何使用Api解决Recaptcha V2回调
• Recaptcha V2 Turnstile同一站点处理
• Recaptcha V2回调机制

下一步

构建您的药房价格比较工具 –”获取您的 CaptchaAI API 密钥并处理所有药房来源的验证码。