2020-12-01

程序员文章站 2022-07-08 12:34:16

@[toc] 爬取百度页面内容-python需求：在百度页面自定义搜索内容import requests 自定义搜索内容wd = input('请输入想要查询的内容：')定义参数字典 ```params = { "ie": "utf-8", "f": "8","rsv_bp": "1","rsv_idx": "1", "tn": "baidu","wd": wd, "fenlei": "256", "oq": "java","rsv_pq": "a10de332000...

@[toc] 爬取百度页面内容-python

需求：在百度页面自定义搜索内容

import requests

 自定义搜索内容
wd = input('请输入想要查询的内容：')

定义参数字典			 
```params = {
 "ie": "utf-8",
 "f": "8",
"rsv_bp": "1",
"rsv_idx": "1",
 "tn": "baidu",
"wd": wd,
 "fenlei": "256",
 "oq": "java",
"rsv_pq": "a10de33200010bdf",
 "rsv_t": "4cc2eJy9DIqlkz3yDhtxC9ELU6Guj7a6USLsNe1imFFQj8wGwFsLu7/fFVk",
 "rqlang": "cn",
 "rsv_enter": "1",
 "rsv_dl": "tb",
 "rsv_btype": "t",
 "inputT": "2305",
 "rsv_sug3": "39",
 "rsv_sug1": "35",
"rsv_sug7": "101",
 "rsv_sug2": "0",
 "rsv_sug4": "4593",
 "rsv_sug": "1",
}
定义请求头字典
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36',
    'Cookie': 'BIDUPSID=18ED7937E033F2F01C7C2B2CAC625A62; PSTM=1605764233;    
    BAIDUID=18ED7937E033F2F0A59CD5F74B955C7D:FG=1; BD_HOME=1;                  H_PS_PSSID=32811_1460_33047_33060_31254_33099_33100_32961_32957_31708;    BAIDUID_BFESS=18ED7937E033F2F0A59CD5F74B955C7D:FG=1; BD_UPN=12314353; 
delPer=0; BD_CK_SAM=1; PSINO=1; BDORZ=B490B5EBF6F3CD402E515D22BCDA1598;    COOKIE_SESSION=20_0_2_9_0_10_0_0_0_3_0_2_0_0_0_0_0_0_1605769247%7C9%230    
_0_1605769247%7C1; H_PS_645EC=60a31GVLMW6tXduYVX2cmufB%2BbcJWNkuhMjFZ%2Fck4AI5WlyZ0YOszTvbDhc; BA_HECTOR=ah0k0120al242gaktd1frc6120q'
}

注意：

1. 以后不管写什么爬虫，都加上请求头，至少加一个UA

2. 如果加入UA之后还是访问不到数据，尝试加入cookie

3. 如果加入cookie还是不好用，将全部的请求头都加入,以:开头的请求头不要加入

# 保存文件
with open(f'{wd}.html','w',encoding='utf-8') as fp:
    fp.write(response.text)
print(response.text)
## 发现问题：返回的内容和网页源代码内容相差甚远
# 解决：
# 查看默认请求头
# print(response.request.headers)
# print(response.url)

本文地址：https://blog.csdn.net/weixin_50702242/article/details/110456888