Python实现批量采集商品数据的示例详解_Python

本次目的

python批量采集某商品数据

知识点

requests 发送请求

re 解析网页数据

json 类型数据提取

csv 表格数据保存

开发环境

python 3.8

pycharm

requests

代码

导入模块

				?

									import json

									import random

									import time

									import csv

									import requests

									import re

									import pymysql

核心代码

				?

									# 连接数据库

									def save_sql(title, pic_url, detail_url, view_price, item_loc, view_sales, nick):

									    count = pymysql.connect(

									        host='xxx.xxx.xxx.xxx',  # 数据库地址

									        port=3306,  # 数据库端口

									        user='xxxx',  # 数据库账号

									        password='xxxx',  # 数据库密码

									        db='xxxx'  # 数据库表名

									    )

									    # 创建数据库对象

									    db = count.cursor()

									    # 写入sql

									    sql = f"insert into goods(title, pic_url, detail_url, view_price, item_loc, view_sales, nick) values ('{title}', '{pic_url}', '{detail_url}', {view_price}, '{item_loc}', '{view_sales}', '{nick}')"

									    # 执行sql

									    db.execute(sql)

									    # 保存修改内容

									    count.commit()

									    db.close()

									headers = {

									    'cookie': 'miid=4137864361077413341; tracknick=%5Cu5218%5Cu6587%5Cu9F9978083283; thw=cn; hng=CN%7Czh-CN%7CCNY%7C156; cna=MNI4GicXYTQCAa8APqlAWWiS; enc=%2FWC5TlhZCGfEq7Zm4Y7wyNToESfZVxhucOmHkanuKyUkH1YNHBFXacrDRNdCFeeY9y5ztSufV535NI0AkjeX4g%3D%3D; t=ad15767ffa6febb4d2a8709edebf63d3; lgc=%5Cu5218%5Cu6587%5Cu9F9978083283; sgcookie=E100EcWpAN49d4Uc3MkldEc205AxRTa81RfV4IC8X8yOM08mjVtdhtulkYwYybKSRnCaLHGsk1mJ6lMa1TO3vTFmr7MTW3mHm92jAsN%2BOA528auARfjf2rnOV%2Bx25dm%2BYC6l; uc3=nk2=ogczBg70hCZ6AbZiWjM%3D&vt3=F8dCvCogB1%2F5Sh1kqHY%3D&lg2=Vq8l%2BKCLz3%2F65A%3D%3D&id2=UNGWOjVj4Vjzwg%3D%3D; uc4=nk4=0%40oAWoex2a2MA2%2F2I%2FjFnivZpTtTp%2F2YKSTg%3D%3D&id4=0%40UgbuMZOge7ar3lxd0xayM%2BsqyxOW; _cc_=W5iHLLyFfA%3D%3D; _m_h5_tk=ac589fc01c86be5353b640607e791528_1647451667088; _m_h5_tk_enc=7d452e4e140345814d5748c3e31fc355; xlly_s=1; x5sec=7b227365617263686170703b32223a223264393234316334363365353038663531353163633366363036346635356431434c61583635454745506163324f2f6b2b2b4b6166686f4d4d7a45774e7a4d794d6a59324e4473784d4b6546677037382f2f2f2f2f77453d227d; JSESSIONID=1F7E942AC30122D1C7DBA22C429521B9; tfstk=cKKGBRTY1F71aDbHPcs6LYjFVa0dZV2F6iSeY3hEAYkCuZxFizaUz1sbK1hS_r1..; l=eBEVp-O4gnqzSzLbBOfwnurza77OIIRAguPzaNbMiOCPO75p5zbNW60wl4L9CnGVhsTMR3lRBzU9BeYBqo44n5U62j-la1Hmn; isg=BDw8SnVxcvXZcEU4ugf-vTadDdruNeBfG0WXdBa9WicK4dxrPkd97hHTxQmZqRi3',

									    'referer': 'https://s.taobao.com/search?q=%E4%B8%9D%E8%A2%9C&imgfile=&js=1&stats_click=search_radio_all%3A1&initiative_id=staobaoz_20220323&ie=utf8&bcoffset=1&ntoffset=1&p4ppushleft=2%2C48&s=',

									    'sec-ch-ua': '" Not A;Brand";v="99", "Chromium";v="99", "Google Chrome";v="99"',

									    'sec-ch-ua-mobile': '?0',

									    'sec-ch-ua-platform': '"Windows"',

									    'sec-fetch-dest': 'document',

									    'sec-fetch-mode': 'navigate',

									    'sec-fetch-site': 'same-origin',

									    'sec-fetch-user': '?1',

									    'upgrade-insecure-requests': '1',

									    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.82 Safari/537.36',

									}

									with open('淘宝.csv', mode='a', encoding='utf-8', newline='') as f:

									    csv_writer = csv.writer(f)

									    csv_writer.writerow(['title', 'pic_url', 'detail_url', 'view_price', 'item_loc', 'view_sales', 'nick'])

									for page in range(1, 101):

									    url = f'https://s.taobao.com/search?q=%E4%B8%9D%E8%A2%9C&imgfile=&js=1&stats_click=search_radio_all%3A1&initiative_id=staobaoz_20220323&ie=utf8&bcoffset=1&ntoffset=1&p4ppushleft=2%2C48&s={44*page}'

									    response = requests.get(url=url, headers=headers)

									    json_str = re.findall('g_page_config = (.*);', response.text)[0]

									    json_data = json.loads(json_str)

									    auctions = json_data['mods']['itemlist']['data']['auctions']

									    for auction in auctions:

									        try:

									            title = auction['raw_title']

									            pic_url = auction['pic_url']

									            detail_url = auction['detail_url']

									            view_price = auction['view_price']

									            item_loc = auction['item_loc']

									            view_sales = auction['view_sales']

									            nick = auction['nick']

									            print(title, pic_url, detail_url, view_price, item_loc, view_sales, nick)

									            save_sql(title, pic_url, detail_url, view_price, item_loc, view_sales, nick)

									            with open('淘宝.csv', mode='a', encoding='utf-8', newline='') as f:

									                csv_writer = csv.writer(f)

									                csv_writer.writerow([title, pic_url, detail_url, view_price, item_loc, view_sales, nick])

									        except:

									            pass

									    time.sleep(random.randint(3, 5))