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生成网站sitemap.xml地图教程

news 2025/8/8 17:29:13

要生成 sitemap.xml 文件，需要通过爬虫程序抓取网站的所有有效链接。以下是完整的解决方案：

步骤 1：安装必要的 Python 库

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pip install requests beautifulsoup4 lxml

步骤 2：创建 Python 爬虫脚本 (`sitemap_generator.py`)

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import requestsfrom bs4 import BeautifulSoupfrom urllib.parse import urljoin, urlparseimport xml.etree.ElementTree as ETfrom datetime import datetime
def get_all_links(base_url):    # 存储已访问和待访问的链接    visited = set()    queue = [base_url]    all_links = set()
    while queue:        url = queue.pop(0)        if url in visited:            continue
        try:            headers = {                'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'            }            response = requests.get(url, headers=headers, timeout=10)            if response.status_code != 200:                continue
            # 添加到已访问列表            visited.add(url)            all_links.add(url)            print(f"Crawled: {url}")
            # 解析 HTML 获取新链接            soup = BeautifulSoup(response.text, 'lxml')            for link in soup.find_all('a', href=True):                href = link['href'].strip()                full_url = urljoin(url, href)
                # 过滤无效链接                parsed = urlparse(full_url)                if parsed.scheme not in ('http', 'https'):                    continue                if not parsed.netloc.endswith('91kaiye.cn'):  # 仅限本站链接                    continue                if '#' in full_url:  # 忽略锚点                    full_url = full_url.split('#')[0]
                # 添加到待访问队列                if full_url not in visited:                    queue.append(full_url)
        except Exception as e:            print(f"Error crawling {url}: {str(e)}")
    return all_links
def create_sitemap(links, filename='sitemap.xml'):    root = ET.Element('urlset', xmlns='http://www.sitemaps.org/schemas/sitemap/0.9')        for link in sorted(links):        url_elem = ET.SubElement(root, 'url')        ET.SubElement(url_elem, 'loc').text = link        ET.SubElement(url_elem, 'lastmod').text = datetime.now().strftime('%Y-%m-%d')        ET.SubElement(url_elem, 'changefreq').text = 'daily'        ET.SubElement(url_elem, 'priority').text = '0.8'        tree = ET.ElementTree(root)    tree.write(filename, encoding='utf-8', xml_declaration=True)    print(f"\nSitemap generated: {filename} with {len(links)} URLs")
if __name__ == '__main__':    base_url = 'https://www.91kaiye.cn/'    print("Starting crawl...")    links = get_all_links(base_url)    create_sitemap(links)

步骤 3：运行脚本

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python sitemap_generator.py

执行说明：

爬虫逻辑：
- 从首页 https://www.91kaiye.cn/ 开始广度优先搜索
- 自动过滤非本站链接、锚点和无效 URL
- 记录每个页面的最后修改日期（默认当天）
- 设置更新频率为 daily，优先级为 0.8

输出文件：

生成的 sitemap.xml 格式如下：

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<?xml version='1.0' encoding='utf-8'?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">  <url>    <loc>https://www.91kaiye.cn/page1</loc>    <lastmod>2023-10-05</lastmod>    <changefreq>daily</changefreq>    <priority>0.8</priority>  </url>  ...</urlset>

注意事项：

反爬措施：
- 如果网站有反爬机制，可能需要：
  - 添加 time.sleep(1) 延迟请求
  - 使用代理 IP
  - 设置更真实的请求头
动态内容：
- 对于 JavaScript 渲染的页面（如 Vue/React），需改用 Selenium 或 Playwright
优化建议：
- 在服务器上定期运行（如每周一次）
- 提交到 Google Search Console
- 在 robots.txt 中添加：
  - ounter(line
```
Sitemap: https://www.91kaiye.cn/sitemap.xml
```