#利用json读取每一页html内容,并分析html内容,找到需要的信息并存入相应列表中,要求每一页信息存储完毕都会显示关键字_页码.用Python实现代码
时间: 2024-09-13 14:02:56 浏览: 59
在Python中,我们可以使用`requests`库获取HTML内容,然后使用如`BeautifulSoup`解析HTML,提取我们需要的信息。以下是一个基本的示例,假设我们要从一个分页的网站上抓取数据:
```python
import requests
from bs4 import BeautifulSoup
import json
# 定义目标URL和关键词
url_template = "http://example.com/page_{page}"
keyword = "_页码"
output_list = []
def get_html_content(page):
response = requests.get(url_template.format(page=page))
if response.status_code == 200:
return response.text
else:
print(f"Error fetching page {page}: {response.status_code}")
return None
def parse_and_store_data(html):
soup = BeautifulSoup(html, 'lxml')
# 根据实际页面结构找出需要的数据并添加到data_list中
data = {} # 假设这里我们找到的数据是键值对形式
data[keyword] = page
output_list.append(data)
def fetch_and_analyze_pages(start_page, end_page):
for page in range(start_page, end_page + 1):
html = get_html_content(page)
if html is not None:
parse_and_store_data(html)
print(f"已处理第{page}页,数据:{output_list[-1]}")
fetch_and_analyze_pages(1, 5) # 这里替换为你实际的目标页数范围
# 存储结果
with open('output.json', 'w') as f:
json.dump(output_list, f)
```
在这个例子中,你需要根据目标网页的具体HTML结构来修改`parse_and_store_data`函数,以提取关键信息。`output.json`文件将存储所有的页面数据。
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