700 lines
25 KiB
Python
700 lines
25 KiB
Python
"""
|
||
基础爬虫类
|
||
提供通用的爬取逻辑
|
||
"""
|
||
|
||
import os
|
||
import time
|
||
import copy
|
||
import re
|
||
import requests
|
||
from bs4 import BeautifulSoup
|
||
import markdownify
|
||
from docx import Document
|
||
from docx.shared import Inches
|
||
from docx.enum.text import WD_ALIGN_PARAGRAPH
|
||
from urllib.parse import urljoin
|
||
from abc import ABC, abstractmethod
|
||
|
||
from .config import BASE_URL, HEADERS, REQUEST_DELAY, OUTPUT_DIR
|
||
from .utils import ensure_dir, download_image, safe_filename, make_absolute_url
|
||
|
||
|
||
class BaseCrawler(ABC):
|
||
"""
|
||
基础爬虫类
|
||
提供通用的页面获取、内容提取、文档生成功能
|
||
"""
|
||
|
||
def __init__(self, task_config: dict):
|
||
"""
|
||
初始化爬虫
|
||
|
||
Args:
|
||
task_config: 任务配置字典
|
||
"""
|
||
self.config = task_config
|
||
self.name = task_config.get("name", "未命名")
|
||
self.session = requests.Session()
|
||
self.session.headers.update(HEADERS)
|
||
|
||
# 输出目录（支持自定义）
|
||
if "output_dir" in task_config:
|
||
output_dir_name = task_config["output_dir"]
|
||
else:
|
||
output_dir_name = self.name
|
||
self.output_dir = os.path.join(OUTPUT_DIR, safe_filename(output_dir_name))
|
||
self.images_dir = os.path.join(self.output_dir, "images")
|
||
ensure_dir(self.output_dir)
|
||
ensure_dir(self.images_dir)
|
||
|
||
def fetch_page(self, url: str) -> BeautifulSoup | None:
|
||
"""
|
||
获取页面内容
|
||
|
||
Args:
|
||
url: 页面URL
|
||
|
||
Returns:
|
||
BeautifulSoup 对象，失败返回 None
|
||
"""
|
||
try:
|
||
response = self.session.get(url, timeout=30)
|
||
response.encoding = 'utf-8'
|
||
return BeautifulSoup(response.text, 'html.parser')
|
||
except Exception as e:
|
||
print(f" 获取页面失败: {url} - {e}")
|
||
return None
|
||
|
||
def get_links_from_index(self, index_url: str) -> list[str]:
|
||
"""
|
||
从索引页提取子页面链接
|
||
|
||
Args:
|
||
index_url: 索引页URL
|
||
|
||
Returns:
|
||
链接列表
|
||
"""
|
||
full_url = make_absolute_url(BASE_URL, index_url)
|
||
print(f"正在从索引页提取链接: {full_url}")
|
||
|
||
soup = self.fetch_page(full_url)
|
||
if not soup:
|
||
return []
|
||
|
||
link_pattern = self.config.get("link_pattern", "")
|
||
link_suffix = self.config.get("link_suffix", ".html")
|
||
exclude_patterns = self.config.get("exclude_patterns", [])
|
||
|
||
links = []
|
||
for a in soup.find_all('a', href=True):
|
||
href = a['href']
|
||
|
||
# 检查是否匹配模式
|
||
if link_pattern and link_pattern not in href:
|
||
continue
|
||
if link_suffix and not href.endswith(link_suffix):
|
||
continue
|
||
|
||
# 检查是否需要排除
|
||
excluded = False
|
||
for pattern in exclude_patterns:
|
||
if pattern in href:
|
||
excluded = True
|
||
break
|
||
if excluded:
|
||
continue
|
||
|
||
# 转为绝对URL
|
||
full_link = make_absolute_url(full_url, href)
|
||
if full_link not in links:
|
||
links.append(full_link)
|
||
|
||
print(f"共发现 {len(links)} 个页面链接")
|
||
return links
|
||
|
||
def extract_title(self, soup: BeautifulSoup, url: str) -> str:
|
||
"""
|
||
提取页面标题
|
||
|
||
Args:
|
||
soup: BeautifulSoup 对象
|
||
url: 页面URL（用于生成默认标题）
|
||
|
||
Returns:
|
||
标题文本
|
||
"""
|
||
selector = self.config.get("title_selector", "h1")
|
||
index = self.config.get("title_index", 0)
|
||
|
||
# 优先从配置的选择器提取
|
||
tags = soup.find_all(selector)
|
||
if tags and len(tags) > index:
|
||
title = tags[index].get_text(strip=True)
|
||
if title:
|
||
return title
|
||
elif tags:
|
||
title = tags[0].get_text(strip=True)
|
||
if title:
|
||
return title
|
||
|
||
# 尝试从页面 title 标签提取
|
||
title_tag = soup.find('title')
|
||
if title_tag:
|
||
title = title_tag.get_text(strip=True)
|
||
# 移除网站名称后缀（如 " - 零差云控"）
|
||
if ' - ' in title:
|
||
title = title.split(' - ')[0].strip()
|
||
if title and title.lower() not in ['about-us', 'contact-us', 'join-us']:
|
||
return title
|
||
|
||
# 尝试从 h1 标签提取（即使不在配置的选择器中）
|
||
h1_tags = soup.find_all('h1')
|
||
for h1 in h1_tags:
|
||
title = h1.get_text(strip=True)
|
||
# 跳过网站名称
|
||
if title and '零差云控' not in title and '零误差' not in title:
|
||
return title
|
||
|
||
# 最后使用URL最后一部分作为标题，但进行美化
|
||
url_part = url.split('/')[-1].replace('.html', '')
|
||
# 将连字符替换为空格，并首字母大写
|
||
if '-' in url_part:
|
||
url_part = ' '.join(word.capitalize() for word in url_part.split('-'))
|
||
return url_part
|
||
|
||
def extract_content(self, soup: BeautifulSoup) -> BeautifulSoup | None:
|
||
"""
|
||
提取页面主内容
|
||
|
||
Args:
|
||
soup: BeautifulSoup 对象
|
||
|
||
Returns:
|
||
内容区域的 BeautifulSoup 对象，未找到返回 None
|
||
"""
|
||
selector = self.config.get("content_selector", "")
|
||
|
||
# 支持多个选择器，用逗号分隔
|
||
selectors = [s.strip() for s in selector.split(',')]
|
||
|
||
# 收集所有匹配的内容
|
||
all_contents = []
|
||
|
||
for sel in selectors:
|
||
if '.' in sel:
|
||
# class 选择器
|
||
tag, class_name = sel.split('.', 1)
|
||
tag = tag if tag else 'div'
|
||
# 使用 find 只匹配第一个元素，避免重复
|
||
content = soup.find(tag, class_=class_name)
|
||
else:
|
||
content = soup.find(sel)
|
||
|
||
if content:
|
||
all_contents.append(content)
|
||
|
||
# 如果没有找到任何内容
|
||
if not all_contents:
|
||
return None
|
||
|
||
# 如果只找到一个，直接返回
|
||
if len(all_contents) == 1:
|
||
return all_contents[0]
|
||
|
||
# 去重：移除嵌套或重复的内容块
|
||
unique_contents = []
|
||
seen_texts = set() # 用于记录已见过的文本内容
|
||
|
||
for content in all_contents:
|
||
is_duplicate = False
|
||
content_text = content.get_text(strip=True)
|
||
|
||
# 跳过空内容
|
||
if not content_text:
|
||
continue
|
||
|
||
# 检查是否被其他内容块包含（是其他块的子元素）
|
||
for other in all_contents:
|
||
if content is other:
|
||
continue
|
||
# 检查当前内容是否是另一个内容块的子元素
|
||
parent = content.find_parent()
|
||
while parent:
|
||
if parent is other:
|
||
is_duplicate = True
|
||
break
|
||
parent = parent.find_parent()
|
||
if is_duplicate:
|
||
break
|
||
|
||
# 如果内容文本完全相同，只保留第一个
|
||
if not is_duplicate and content_text in seen_texts:
|
||
is_duplicate = True
|
||
|
||
if not is_duplicate:
|
||
unique_contents.append(content)
|
||
seen_texts.add(content_text)
|
||
|
||
# 如果去重后只剩一个，直接返回
|
||
if len(unique_contents) == 1:
|
||
return unique_contents[0]
|
||
|
||
# 合并多个内容区域到一个容器
|
||
combined = soup.new_tag('div')
|
||
for content in unique_contents:
|
||
# 深拷贝内容以避免从原DOM中移除
|
||
combined.append(copy.deepcopy(content))
|
||
|
||
return combined
|
||
|
||
def clean_content(self, content: BeautifulSoup) -> BeautifulSoup:
|
||
"""
|
||
清洗内容，移除无用元素
|
||
|
||
Args:
|
||
content: 内容区域
|
||
|
||
Returns:
|
||
清洗后的内容
|
||
"""
|
||
# 移除 script 和 style 标签
|
||
for tag in content(['script', 'style']):
|
||
tag.decompose()
|
||
|
||
# 移除导航链接、空链接、锚点链接
|
||
for a in content.find_all('a', href=True):
|
||
href = a.get('href', '')
|
||
# 移除空链接、锚点链接、JavaScript 链接
|
||
if not href or href.startswith('#') or href.startswith('javascript:'):
|
||
# 保留链接文本，移除链接标签
|
||
a.unwrap()
|
||
# 移除导航菜单中的链接（通常包含特定 class 或 id）
|
||
elif a.find_parent(['nav', 'menu', 'navigation']):
|
||
a.decompose()
|
||
|
||
# 移除空的 div、span 等标签（只包含空白字符）
|
||
for tag in content.find_all(['div', 'span', 'p']):
|
||
text = tag.get_text(strip=True)
|
||
if not text and not tag.find_all(['img', 'table']):
|
||
# 如果没有文本内容且没有图片/表格，移除
|
||
tag.decompose()
|
||
|
||
# 移除注释
|
||
from bs4 import Comment
|
||
for comment in content.find_all(string=lambda text: isinstance(text, Comment)):
|
||
comment.extract()
|
||
|
||
# 清理多余的空白字符
|
||
for tag in content.find_all(['p', 'div', 'span']):
|
||
if tag.string:
|
||
# 清理段落内的多余空白
|
||
tag.string = ' '.join(tag.string.split())
|
||
|
||
return content
|
||
|
||
def process_images(self, content: BeautifulSoup, page_url: str) -> list[tuple[str, str]]:
|
||
"""
|
||
处理内容中的图片，下载到本地
|
||
|
||
Args:
|
||
content: 内容区域
|
||
page_url: 页面URL（用于解析相对路径）
|
||
|
||
Returns:
|
||
图片信息列表 [(原URL, 本地路径), ...]
|
||
"""
|
||
images_info = []
|
||
|
||
for img in content.find_all('img'):
|
||
src = img.get('src')
|
||
if not src:
|
||
continue
|
||
|
||
# 转为绝对URL
|
||
full_url = make_absolute_url(page_url, src)
|
||
|
||
# 下载图片
|
||
local_path = download_image(full_url, self.images_dir)
|
||
|
||
if local_path:
|
||
images_info.append((full_url, local_path))
|
||
# 更新 img 标签的 src 为本地相对路径
|
||
img['src'] = os.path.relpath(local_path, self.output_dir).replace('\\', '/')
|
||
else:
|
||
# 下载失败，保留原URL
|
||
img['src'] = full_url
|
||
|
||
return images_info
|
||
|
||
def content_to_markdown(self, content: BeautifulSoup) -> str:
|
||
"""
|
||
将内容转换为 Markdown
|
||
|
||
Args:
|
||
content: 内容区域
|
||
|
||
Returns:
|
||
Markdown 文本
|
||
"""
|
||
return markdownify.markdownify(str(content), heading_style="ATX")
|
||
|
||
def add_content_to_docx(self, doc: Document, content: BeautifulSoup, output_dir: str):
|
||
"""
|
||
将内容添加到 Word 文档
|
||
|
||
Args:
|
||
doc: Document 对象
|
||
content: 内容区域
|
||
output_dir: 输出目录（用于解析图片路径）
|
||
"""
|
||
# 按文档顺序处理元素，保持列表的连续性
|
||
for element in content.find_all(['p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'img', 'li', 'ul', 'ol', 'table']):
|
||
if element.name == 'img':
|
||
src = element.get('src', '')
|
||
# 尝试获取本地图片路径
|
||
if not src.startswith('http'):
|
||
local_path = os.path.join(output_dir, src)
|
||
else:
|
||
local_path = src
|
||
|
||
if os.path.exists(local_path):
|
||
try:
|
||
# 图片前添加空行
|
||
doc.add_paragraph()
|
||
doc.add_picture(local_path, width=Inches(5))
|
||
doc.paragraphs[-1].alignment = WD_ALIGN_PARAGRAPH.CENTER
|
||
# 图片后添加空行
|
||
doc.add_paragraph()
|
||
except Exception as e:
|
||
print(f" Word插入图片失败: {local_path} - {e}")
|
||
|
||
elif element.name.startswith('h'):
|
||
text = element.get_text(strip=True)
|
||
if text:
|
||
# HTML h1-h6 直接映射到 Word Heading 1-6
|
||
# 限制在 1-9 范围内（Word 支持的最大标题级别）
|
||
level = int(element.name[1])
|
||
doc.add_heading(text, level=min(level, 9))
|
||
|
||
elif element.name in ['ul', 'ol']:
|
||
# 列表容器，跳过（列表项会单独处理）
|
||
continue
|
||
|
||
elif element.name == 'li':
|
||
text = element.get_text(strip=True)
|
||
if text:
|
||
# 检查父元素是 ul 还是 ol
|
||
parent = element.find_parent(['ul', 'ol'])
|
||
is_ordered = parent and parent.name == 'ol'
|
||
|
||
# 使用列表样式
|
||
if is_ordered:
|
||
doc.add_paragraph(text, style='List Number')
|
||
else:
|
||
doc.add_paragraph(text, style='List Bullet')
|
||
|
||
elif element.name == 'table':
|
||
# 处理表格，创建 Word 表格结构（便于 doc2md.py 解析）
|
||
self._add_table_to_docx(doc, element)
|
||
|
||
elif element.name == 'p':
|
||
text = element.get_text(strip=True)
|
||
if text:
|
||
# 跳过空段落和只包含空白字符的段落
|
||
if text.strip():
|
||
# 检查是否是列表项（某些网站用 p 标签包裹列表项）
|
||
parent = element.find_parent(['ul', 'ol'])
|
||
if parent:
|
||
is_ordered = parent.name == 'ol'
|
||
if is_ordered:
|
||
doc.add_paragraph(text, style='List Number')
|
||
else:
|
||
doc.add_paragraph(text, style='List Bullet')
|
||
else:
|
||
doc.add_paragraph(text)
|
||
|
||
def crawl_page(self, url: str) -> dict | None:
|
||
"""
|
||
爬取单个页面
|
||
|
||
Args:
|
||
url: 页面URL
|
||
|
||
Returns:
|
||
页面数据字典，失败返回 None
|
||
"""
|
||
soup = self.fetch_page(url)
|
||
if not soup:
|
||
return None
|
||
|
||
# 提取标题
|
||
title = self.extract_title(soup, url)
|
||
|
||
# 提取内容
|
||
content = self.extract_content(soup)
|
||
if not content:
|
||
print(f" 警告: 页面未找到主内容区域: {url}")
|
||
return None
|
||
|
||
# 清洗内容
|
||
content = self.clean_content(content)
|
||
|
||
# 处理图片
|
||
images = self.process_images(content, url)
|
||
|
||
# 转换为 Markdown
|
||
markdown = self.content_to_markdown(content)
|
||
|
||
return {
|
||
"url": url,
|
||
"title": title,
|
||
"content": content,
|
||
"markdown": markdown,
|
||
"images": images,
|
||
}
|
||
|
||
def save_single_page(self, page_data: dict):
|
||
"""
|
||
保存单个页面为独立的 md 和 docx 文件
|
||
|
||
Args:
|
||
page_data: 页面数据字典
|
||
"""
|
||
title = page_data["title"]
|
||
safe_title = safe_filename(title)
|
||
|
||
# 保存 Markdown
|
||
md_path = os.path.join(self.output_dir, f"{safe_title}.md")
|
||
md_content = f"# {title}\n\n"
|
||
md_content += f"**原文链接**: {page_data['url']}\n\n"
|
||
md_content += page_data["markdown"]
|
||
|
||
with open(md_path, "w", encoding="utf-8") as f:
|
||
f.write(md_content)
|
||
|
||
# 保存 Word
|
||
docx_path = os.path.join(self.output_dir, f"{safe_title}.docx")
|
||
doc = Document()
|
||
doc.add_heading(title, 0)
|
||
p = doc.add_paragraph()
|
||
p.add_run(f"原文链接: {page_data['url']}").italic = True
|
||
|
||
self.add_content_to_docx(doc, page_data["content"], self.output_dir)
|
||
doc.save(docx_path)
|
||
|
||
def save_combined_documents(self, all_pages: list[dict]):
|
||
"""
|
||
将所有页面汇总保存为一个 md 和 docx 文件
|
||
如果文件已存在，会追加内容并去重（基于URL）
|
||
|
||
Args:
|
||
all_pages: 所有页面数据列表
|
||
"""
|
||
if not all_pages:
|
||
return
|
||
|
||
# 确定汇总文件名（使用输出目录名，而不是任务名）
|
||
output_dir_name = os.path.basename(self.output_dir)
|
||
safe_name = safe_filename(output_dir_name)
|
||
|
||
md_path = os.path.join(self.output_dir, f"{safe_name}_汇总.md")
|
||
docx_path = os.path.join(self.output_dir, f"{safe_name}_汇总.docx")
|
||
|
||
# === 处理 Markdown ===
|
||
existing_urls = set()
|
||
existing_content = ""
|
||
|
||
# 如果文件已存在，读取现有内容并提取已存在的URL
|
||
if os.path.exists(md_path):
|
||
with open(md_path, "r", encoding="utf-8") as f:
|
||
existing_content = f.read()
|
||
# 提取已存在的URL（用于去重）
|
||
url_pattern = r'\*\*原文链接\*\*: (https?://[^\s\n]+)'
|
||
existing_urls = set(re.findall(url_pattern, existing_content))
|
||
|
||
# 过滤掉已存在的页面（基于URL去重）
|
||
new_pages = [page for page in all_pages if page['url'] not in existing_urls]
|
||
|
||
if not new_pages and existing_content:
|
||
print(f" 所有页面已存在，无需更新: {md_path}")
|
||
return
|
||
|
||
# 生成新内容
|
||
new_md_content = ""
|
||
for page in new_pages:
|
||
new_md_content += f"## {page['title']}\n\n"
|
||
new_md_content += f"**原文链接**: {page['url']}\n\n"
|
||
new_md_content += page["markdown"]
|
||
new_md_content += "\n\n---\n\n"
|
||
|
||
# 追加或创建文件
|
||
if existing_content:
|
||
# 追加模式：在现有内容后追加新内容
|
||
combined_md = existing_content.rstrip() + "\n\n" + new_md_content
|
||
print(f" 追加 {len(new_pages)} 篇新内容到现有文档")
|
||
else:
|
||
# 新建模式：创建新文档
|
||
combined_md = f"# {output_dir_name}全集\n\n" + new_md_content
|
||
|
||
with open(md_path, "w", encoding="utf-8") as f:
|
||
f.write(combined_md)
|
||
print(f" 汇总 Markdown: {md_path}")
|
||
|
||
# === 处理 Word 文档 ===
|
||
if os.path.exists(docx_path):
|
||
# 如果Word文档已存在，重新生成（因为python-docx不支持追加）
|
||
doc = Document(docx_path)
|
||
# 提取已存在的URL
|
||
existing_doc_urls = set()
|
||
for para in doc.paragraphs:
|
||
if para.runs and "原文链接:" in para.text:
|
||
url_match = re.search(r'原文链接: (https?://[^\s\n]+)', para.text)
|
||
if url_match:
|
||
existing_doc_urls.add(url_match.group(1))
|
||
|
||
# 过滤新页面
|
||
new_pages_for_doc = [page for page in all_pages if page['url'] not in existing_doc_urls]
|
||
|
||
if new_pages_for_doc:
|
||
# 添加新内容
|
||
for page in new_pages_for_doc:
|
||
doc.add_heading(page["title"], level=1)
|
||
p = doc.add_paragraph()
|
||
p.add_run(f"原文链接: {page['url']}").italic = True
|
||
self.add_content_to_docx(doc, page["content"], self.output_dir)
|
||
doc.add_page_break()
|
||
doc.save(docx_path)
|
||
print(f" 追加 {len(new_pages_for_doc)} 篇新内容到 Word 文档")
|
||
else:
|
||
print(f" Word 文档无需更新: {docx_path}")
|
||
else:
|
||
# 新建Word文档
|
||
doc = Document()
|
||
doc.add_heading(f'{output_dir_name}全集', level=1)
|
||
|
||
for page in all_pages:
|
||
doc.add_heading(page["title"], level=1)
|
||
p = doc.add_paragraph()
|
||
p.add_run(f"原文链接: {page['url']}").italic = True
|
||
self.add_content_to_docx(doc, page["content"], self.output_dir)
|
||
doc.add_page_break()
|
||
|
||
doc.save(docx_path)
|
||
print(f" 汇总 Word: {docx_path}")
|
||
|
||
def run(self):
|
||
"""
|
||
执行爬取任务
|
||
"""
|
||
print(f"\n{'='*60}")
|
||
print(f"开始爬取: {self.name}")
|
||
print(f"{'='*60}")
|
||
|
||
# 获取页面链接
|
||
if "static_pages" in self.config:
|
||
# 静态页面列表
|
||
links = [make_absolute_url(BASE_URL, p) for p in self.config["static_pages"]]
|
||
elif "index_url" in self.config:
|
||
# 从索引页提取
|
||
links = self.get_links_from_index(self.config["index_url"])
|
||
else:
|
||
print("错误: 配置中未指定 static_pages 或 index_url")
|
||
return
|
||
|
||
if not links:
|
||
print("未获取到链接，跳过此任务")
|
||
return
|
||
|
||
# 爬取每个页面
|
||
all_pages = [] # 存储所有成功爬取的页面数据
|
||
|
||
for i, url in enumerate(links):
|
||
print(f"[{i+1}/{len(links)}] 正在抓取: {url}")
|
||
|
||
page_data = self.crawl_page(url)
|
||
if page_data:
|
||
all_pages.append(page_data)
|
||
|
||
# 请求延迟
|
||
time.sleep(REQUEST_DELAY)
|
||
|
||
# 生成汇总文档
|
||
if all_pages:
|
||
print(f"\n正在生成汇总文档（共 {len(all_pages)} 篇）...")
|
||
self.save_combined_documents(all_pages)
|
||
|
||
print(f"\n{self.name} 爬取完成！成功: {len(all_pages)}/{len(links)}")
|
||
print(f"输出目录: {self.output_dir}")
|
||
|
||
|
||
def _add_table_to_docx(self, doc: Document, table_element: BeautifulSoup):
|
||
"""
|
||
将 HTML 表格添加到 Word 文档
|
||
|
||
Args:
|
||
doc: Document 对象
|
||
table_element: 表格元素
|
||
"""
|
||
rows = table_element.find_all('tr')
|
||
if not rows:
|
||
return
|
||
|
||
# 获取最大列数（考虑 colspan）
|
||
max_cols = 0
|
||
for row in rows:
|
||
cells = row.find_all(['td', 'th'])
|
||
col_count = 0
|
||
for cell in cells:
|
||
colspan = int(cell.get('colspan', 1))
|
||
col_count += colspan
|
||
max_cols = max(max_cols, col_count)
|
||
|
||
if max_cols == 0:
|
||
return
|
||
|
||
# 创建 Word 表格
|
||
try:
|
||
word_table = doc.add_table(rows=len(rows), cols=max_cols)
|
||
word_table.style = 'Table Grid'
|
||
|
||
for i, row in enumerate(rows):
|
||
cells = row.find_all(['td', 'th'])
|
||
col_idx = 0
|
||
for cell in cells:
|
||
if col_idx >= max_cols:
|
||
break
|
||
text = cell.get_text(strip=True)
|
||
colspan = int(cell.get('colspan', 1))
|
||
rowspan = int(cell.get('rowspan', 1))
|
||
|
||
# 设置单元格文本
|
||
word_table.rows[i].cells[col_idx].text = text
|
||
|
||
# 处理合并单元格（python-docx 的合并需要特殊处理）
|
||
# 注意：python-docx 的合并单元格功能有限，这里先简单处理
|
||
if colspan > 1 or rowspan > 1:
|
||
# 对于合并单元格，python-docx 需要手动合并
|
||
# 这里先标记，后续可以改进
|
||
pass
|
||
|
||
col_idx += colspan
|
||
except Exception as e:
|
||
# 如果表格创建失败，降级为文本
|
||
print(f" 表格创建失败，降级为文本: {e}")
|
||
for row in rows:
|
||
cells = row.find_all(['td', 'th'])
|
||
row_text = ' | '.join([cell.get_text(strip=True) for cell in cells])
|
||
if row_text.strip():
|
||
doc.add_paragraph(row_text)
|
||
|
||
|
||
class StandardCrawler(BaseCrawler):
|
||
"""
|
||
标准爬虫类
|
||
适用于大多数页面类型
|
||
"""
|
||
pass
|
||
|