这篇文章将为大家详细讲解有关如何解决Python爬取网页时请求中收到响应400的问题，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
一般情况下抓取网页时找到url中可以从 post 请求中获取数据，但得到的响应是400而不是 200时，可以尝试从服务器获得正确的响应，使用json=参数requests进行尝试可以解决。
问题案例：
import requests headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0', 'Accept': 'application/json', 'Accept-Language': 'en-US,en;q=0.5', 'Content-Type': 'application/x-www-form-urlencoded', 'Origin': 'https://www.ketto.org', 'Sec-Fetch-Dest': 'empty', 'Sec-Fetch-Mode': 'cors', 'Sec-Fetch-Site': 'cross-site', 'Referer': 'https://www.ketto.org/', 'Connection': 'keep-alive', } params = ( ('x-algolia-agent', 'Algolia for JavaScript (3.35.1); Browser (lite); angular (8.2.14); angular-instantsearch (3.0.0-beta.4); instantsearch.js (3.7.0); JS Helper (2.28.1)'), ('x-algolia-application-id', 'NN2UORRIZX'), ('x-algolia-api-key', 'b2caa1b0589e8db9398d5fe2a40bbaed'), ) data = [ ('{requests:[{indexName:fundraiser_prod,params:query', ''), ('hitsPerPage', '9'), ('hitsPerPage', '1'), ('hitsPerPage', '1'), ('hitsPerPage', '1'), ('maxValuesPerFacet', '10'), ('maxValuesPerFacet', '10'), ('maxValuesPerFacet', '10'), ('maxValuesPerFacet', '10'), ('page', '1'), ('page', '0'), ('page', '0'), ('page', '0'), ('highlightPreTag', '__ais-highlight__'), ('highlightPreTag', '__ais-highlight__'), ('highlightPreTag', '__ais-highlight__'), ('highlightPreTag', '__ais-highlight__'), ('highlightPostTag', '__/ais-highlight__'), ('highlightPostTag', '__/ais-highlight__'), ('highlightPostTag', '__/ais-highlight__'), ('highlightPostTag', '__/ais-highlight__'), ('facets', '["cause.label","tags","address"]'), ('facets', '["cause.label"]'), ('facets', '["tags"]'), ('facets', '["address"]'), ('tagFilters', ''), ('tagFilters', ''), ('tagFilters', ''), ('tagFilters', ''), ('facetFilters', '[["cause.label:"],["tags:"],["address:"]]},{indexName:fundraiser_prod,params:query='), ('facetFilters', '[["tags:"],["address:"]]},{indexName:fundraiser_prod,params:query='), ('facetFilters', '[["cause.label:"],["address:"]]},{indexName:fundraiser_prod,params:query='), ('facetFilters', '[["cause.label:"],["tags:"]]}]}'), ('attributesToRetrieve', '[]'), ('attributesToRetrieve', '[]'), ('attributesToRetrieve', '[]'), ('attributesToHighlight', '[]'), ('attributesToHighlight', '[]'), ('attributesToHighlight', '[]'), ('attributesToSnippet', '[]'), ('attributesToSnippet', '[]'), ('attributesToSnippet', '[]'), ('analytics', 'false'), ('analytics', 'false'), ('analytics', 'false'), ('clickAnalytics', 'false'), ('clickAnalytics', 'false'), ('clickAnalytics', 'false'), ] response = requests.post('https://nn2uorrizx-dsn.algolia.net/1/indexesqueries"params = { "x-algolia-agent": "Algolia for JavaScript (3.35.1); Browser (lite); angular (8.2.14); angular-instantsearch (3.0.0-beta.4); instantsearch.js (3.7.0); JS Helper (2.28.1)", "x-algolia-application-id": "NN2UORRIZX", "x-algolia-api-key": "b2caa1b0589e8db9398d5fe2a40bbaed",}data = { "requests": [ { "indexName": "fundraiser_prod", "params": "query=&hitsPerPage=9&maxValuesPerFacet=10&page=0&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&facets=%5B%22cause.label%22%2C%22tags%22%2C%22address%22%5D&tagFilters=&facetFilters=%5B%5B%22cause.label%3A%22%5D%2C%5B%22tags%3A%22%5D%2C%5B%22address%3A%22%5D%5D", }, { "indexName": "fundraiser_prod", "params": "query=&hitsPerPage=1&maxValuesPerFacet=10&page=0&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&attributesToRetrieve=%5B%5D&attributesToHighlight=%5B%5D&attributesToSnippet=%5B%5D&tagFilters=&analytics=false&clickAnalytics=false&facets=%5B%22cause.label%22%5D&facetFilters=%5B%5B%22tags%3A%22%5D%2C%5B%22address%3A%22%5D%5D", }, { "indexName": "fundraiser_prod", "params": "query=&hitsPerPage=1&maxValuesPerFacet=10&page=0&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&attributesToRetrieve=%5B%5D&attributesToHighlight=%5B%5D&attributesToSnippet=%5B%5D&tagFilters=&analytics=false&clickAnalytics=false&facets=%5B%22tags%22%5D&facetFilters=%5B%5B%22cause.label%3A%22%5D%2C%5B%22address%3A%22%5D%5D", }, { "indexName": "fundraiser_prod", "params": "query=&hitsPerPage=1&maxValuesPerFacet=10&page=0&highlightPreTag=__ais-highlight__&highlightPostTag=__%2Fais-highlight__&attributesToRetrieve=%5B%5D&attributesToHighlight=%5B%5D&attributesToSnippet=%5B%5D&tagFilters=&analytics=false&clickAnalytics=false&facets=%5B%22address%22%5D&facetFilters=%5B%5B%22cause.label%3A%22%5D%2C%5B%22tags%3A%22%5D%5D", }, ]}data = requests.post(url, params=params, json=data).json()print(json.dumps(data, indent=4))打印结果：
{ "results": [ { "hits": [ { "id": 180773, "title": "Feeding From Far-Ration Distribution Amid Lockdown", "end_date": "2021-09-11 23:59:59", "amount_requested": 65000000, "entity_details_id": 1505699, "creator_entity_details_id": 1463388, "address_1": "Mumbai", "creation_date": "2020-04-05 15:10:12", "parent_cause_id": 48, "event_entity_details_id": 1399904, "sucess_story_flag": 0, "custom_tag": "FeedingFromFarForCorona", "beneficiary": { "full_name": "Prayatna " }, "raised": { "campaign_id": 180773, "backers": 10616, "raised": "45094771.40", "usdraised": "644211.02", "currencies": { "INR": 45094771, "USD": 644211, "GBP": 501053, "EUR": 536843, "AED": 2254739, "SGD": 867207, "SAR": 2254739 } }, "widget": { "media_type": "image", "file_name": "wid60a133a89542c.jpg", "path": "/media/campaign/180000/180773/image/", "cdn_path": "https://d1vdjc70h9nzd9.cloudfront.net/media/campaign/180000/180773/image/wid60a133a89542c.jpg" }, "cause": { "info_1": "Food & Hunger", "info_3": "Orange", "label": "Food & Hunger" }, "campaigner": { "id": 1463388, "fname": "Pooja Reddy", "lname": null, "full_name": "Pooja Reddy ", "disable_foreign_donation": 0, "no_80g": false, "user_details_id": 1470493, "entity_type": "individual", "tax_benefit": false, "avtar": { "entity_type_id": 1463388, "entity_type": "individual", "media_type": "image", "file_name": "60efdb6db4758.jpg", "path": "/media/individual/1463000/1463388/image/", "cdn_path": "https://d1vdjc70h9nzd9.cloudfront.net/media/individual/1463000/1463388/image/60efdb6db4758.jpg" } }, "taxexempted": { "id": 1505699, "no_80g": true, "entity_type": "ngo", "tax_benefit": true },... and so on.}关于“如何解决Python爬取网页时请求中收到响应400的问题”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，使各位可以学到更多知识，如果觉得文章不错，请把它分享出去让更多的人看到。
