爬取网站“http://www.bjqe.com”,输出“精品推荐”中计算机类图书信息,包括书名、作者、价格和出版社,并将图书信息保存至 MySOL数据库中。
时间: 2024-11-26 17:21:43 浏览: 29
爬取网页并提取特定信息通常需要使用网络爬虫技术,如Python的BeautifulSoup库配合requests库。首先,你需要获取网站的HTML源代码,然后解析出"精品推荐"页面中关于计算机类图书的信息。
以下是一个简单的步骤概述:
1. **安装必要的库**:确保已经安装了`requests`, `beautifulsoup4`以及`pymysql`或`sqlite3`(用于MySOL数据库操作)。
```python
pip install requests beautifulsoup4 pymysql # 如果是MySQL数据库
```
2. **发送HTTP请求**:使用`requests.get()`函数获取网站内容。
3. **解析HTML**:使用BeautifulSoup解析HTML文档,找到包含图书信息的部分,比如CSS选择器可能对应着“精品推荐”的部分。
4. **数据提取**:通过分析HTML结构,提取每个图书的书名、作者、价格和出版社信息。这通常是查找特定标签内的文本。
5. **保存到数据库**:连接到数据库,创建对应的表结构(如果不存在),然后将提取的数据插入到相应的字段中。
```python
import requests
from bs4 import BeautifulSoup
import pymysql
# 数据库连接设置
db = pymysql.connect(host="localhost", user="your_username", password="your_password", db="your_database")
# 创建游标对象
cursor = db.cursor()
# 假设CSS选择器分别为'.book-title', '.author', '.price', '.publisher'
url = 'http://www.bjqe.com'
response = requests.get(url)
soup = BeautifulSoup(response.text, "html.parser")
books = soup.select('.book-item') # 假设每个图书在一个`.book-item`元素内
for book in books:
title = book.select_one('.book-title').text.strip()
author = book.select_one('.author').text.strip()
price = book.select_one('.price').text.strip() # 这里假设价格是纯文本
publisher = book.select_one('.publisher').text.strip()
# 插入数据库
insert_query = f"INSERT INTO computer_books (title, author, price, publisher) VALUES ('{title}', '{author}', '{price}', '{publisher}')"
cursor.execute(insert_query)
# 提交事务并关闭连接
db.commit()
cursor.close()
db.close()
```
请注意,实际代码中可能需要根据网站的具体结构进行调整。此外,处理动态加载的内容或反爬机制可能需要额外的技术手段。
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