从 API 获取 JSON，将其添加到 sqlite3 数据库并自动获取下一页

Question

我正忙于尝试将从 API 收集的数据添加到 sqlite3 数据库，然后提取下一页，加载该页面并将该数据添加到数据库中，直到没有更多的下一页 (next_is_after)。

加载数据运行良好（感谢其他用户），但是当我尝试将其作为列表加载时，格式错误，当我将其作为字典加载时，它运行良好，但我正在努力将其加载到数据库中。

我不知道如何实现加载下一页的循环，因为它不是“正常”页码而是代码（例如“WzExNDEuMTYsNTYwNTkzNTFd”）。

我在下面附上了代码。我会再次感谢任何帮助。

import requests
import json
import sqlite3

con = sqlite3.connect('takealot.db')
cur = con.cursor()

cur.execute('''CREATE TABLE IF NOT EXISTS products
                    (sku text PRIMARY KEY, title text, slug text, reviews integer, star_rating real, listing_price real, pretty_price real)''')

baseurl = 'https://api.takealot.com/rest/v-1-10-0/searches/products,filters,facets,sort_options,breadcrumbs,slots_audience,context,seo'
endpoint = '?after=WzExNDEuMTYsNTYwNTkzNTFd'

def main_request(baseurl, endpoint):
    res = requests.get(baseurl + endpoint)
    return res.json()

daten = main_request(baseurl, endpoint)

next_is_after = daten['sections']['products']['paging']['next_is_after']

prodlist = []
for data in daten['sections']['products']['results']:
    prod = {
        'sku': data['product_views']['core']['id'],
        'title': data['product_views']['core']['title'],
        'slug': data['product_views']['core']['slug'],
        'reviews': data['product_views']['core']['reviews'],
        'star_rating': data['product_views']['core']['star_rating'],
        'listing_price': data['product_views']['buybox_summary']['listing_price'],
        'pretty_price': data['product_views']['buybox_summary']['pretty_price']
    }
    prodlist.append(prod)


cur.executemany("INSERT OR IGNORE INTO products VALUES (?, ?, ?, ?, ?, ?, ?)", [prod['sku'], prod['title'], prod['slug'], prod['reviews'], prod['star_rating'], prod['listing_price'], prod['pretty_price']])
con.commit()

for row in cur.execute('''SELECT * FROM products'''):
    print(row)

Answer 1

你只需要在它周围添加一个while循环：

import requests
import json
import sqlite3

con = sqlite3.connect('takealot.db')
cur = con.cursor()

cur.execute('''CREATE TABLE IF NOT EXISTS products
                    (sku text PRIMARY KEY, title text, slug text, reviews integer, star_rating real, listing_price real, pretty_price real)''')

baseurl = 'https://api.takealot.com/rest/v-1-10-0/searches/products,filters,facets,sort_options,breadcrumbs,slots_audience,context,seo'
endpoint = '?after='

def main_request(baseurl, endpoint):
    res = requests.get(baseurl + endpoint)
    return res.json()

# This seems to work 

next_is_after = "\"\""
while next_is_after != "" :
    daten = main_request(baseurl, endpoint+next_is_after)
    next_is_after = daten['sections']['products']['paging']['next_is_after']
    prodlist = []
    for data in daten['sections']['products']['results']:
        prod = (\
                data['product_views']['core']['id'],\
                data['product_views']['core']['title'],\
                data['product_views']['core']['slug'],\
                data['product_views']['core']['reviews'],\
                data['product_views']['core']['star_rating'],\
                data['product_views']['buybox_summary']['listing_price'],\
                data['product_views']['buybox_summary']['pretty_price'])        
        prodlist.append(prod)
    cur.executemany("INSERT OR IGNORE INTO products VALUES (?, ?, ?, ?, ?, ?, ?)", prodlist)
con.commit()

for row in cur.execute('''SELECT * FROM products'''):
    print(row)

所以你从响应中得到下一个起点，在那里你会找到下一个起点，以此类推。

这假设（与 previous_is_before 一样）当您到达末尾时，它只是一个空字符串。