python 请求了一个接口,请求头的按照格式打包好了,请求还是400

Question

import requests
"""
    https://www.cnblogs.com/#p200
"""
post_json = {
    "CategoryId": 808,
    "CategoryType": "SiteHome",
    "ItemListActionName": "AggSitePostList",
    "PageIndex": 10,
    "ParentCategoryId": 0,
    "TotalPostCount": 4000
}

headers = {
    #":authority": "www.cnblogs.com"
    #,":method": "POST"
    #":path": "/AggSite/AggSitePostList"
    #,":scheme": "https"
    "accept": "text/plain, */*; q=0.01"
    ,"accept-encoding": "gzip, deflate, br"
    ,"accept-language": "th,zh;q=0.9,zh-CN;q=0.8,zh-TW;q=0.7"
    ,"content-length": "140"
    ,"content-type": "application/json; charset=UTF-8"
    ,"cookie": ""
    ,"origin": "https://www.cnblogs.com"
    ,"referer": "https://www.cnblogs.com/"
    ,"sec-ch-ua": '" Not A;Brand";v="99", "Chromium";v="102", "Google Chrome";v="102"'
    ,"sec-ch-ua-mobile": "?0"
    ,"sec-ch-ua-platform": "Windows"
    ,"sec-fetch-dest": "empty"
    ,"sec-fetch-mode": "cors"
    ,"sec-fetch-site": "same-origin"
    ,"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36"
    ,"x-requested-with": "XMLHttpRequest"
}
    

res2 = requests.post('https://www.cnblogs.com/AggSite/AggSitePostList', data= post_json, headers=headers)

print(res2)

https://www.cnblogs.com/#p200 原页面, 有个异步加载接口
分析得到了一个请求接口 https://www.cnblogs.com/AggSi...

格式照抄了,请求400怎么解决,

求教! 还差了什么参数?

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已经解决了, 网上抄了一个post 配置导致的,

data = post_json, 这里的data= 改成 json= 来提交参数就可以了

Answer 1

提交 post 表单，就是 content_type 是 application/x-www-form-urlencoded 或者 multipart/form-data 就要用 requests 的 data 参数

纯表单就是 application/x-www-form-urlencoded, 要提交表单的同时带上文件，就是 multipart/form-data

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提交 post 是 json ，即 content_type 是 application/json 就要用 requests 的 json 参数

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怎么判断呢？

看请求头中的 Content-Type