爬虫技术之从淘宝/天猫获得淘宝商品详情

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网络爬虫(又称为网页蜘蛛,网络机器人,在FOAF社区中间,更经常的称为网页追逐者),是一种按照一定的规则,自动地抓取万维网信息的程序或者脚本。另外一些不常使用的名字还有蚂蚁、自动索引、模拟程序或者蠕虫。

网络爬虫是一个自动提取网页的程序,它为搜索引擎从万维网上下载网页,是搜索引擎的重要组成。传统爬虫从一个或若干初始网页的URL开始,获得初始网页上的URL,在抓取网页的过程中,不断从当前页面上抽取新的URL放入队列,直到满足系统的一定停止条件。聚焦爬虫的工作流程较为复杂,需要根据一定的网页分析算法过滤与主题无关的链接,保留有用的链接并将其放入等待抓取的URL队列。然后,它将根据一定的搜索策略从队列中选择下一步要抓取的网页URL,并重复上述过程,直到达到系统的某一条件时停止。另外,所有被爬虫抓取的网页将会被系统存贮,进行一定的分析、过滤,并建立索引,以便之后的查询和检索;对于聚焦爬虫来说,这一过程所得到的分析结果还可能对以后的抓取过程给出反馈和指导。

接下来简单的测试一下爬虫技术在淘宝/天猫的数据应用

onebound.taobao.item_get

请求参数

请求参数:num_iid=649267319604&is_promotion=1

参数说明:num_iid:淘宝商品ID
is_promotion:是否获取取促销价

请求示例

# coding:utf-8
"""
Compatible for python2.x and python3.x
requirement: pip install requests
"""
from __future__ import print_function
import requests
# 请求示例 url 默认请求参数已经做URL编码
url = "https://api-gw.onebound.cn/taobao/item_get/?key=<您自己的apiKey>&secret=<您自己的apiSecret>&num_iid=520813250866&is_promotion=1"
headers = {
    "Accept-Encoding": "gzip",
    "Connection": "close"
}
if __name__ == "__main__":
    r = requests.get(url, headers=headers)
    json_obj = r.json()
    print(json_obj)

演示过程

	"item": {
		"num_iid": "649267319604",
		"title": "Xiaomi/小米红米AirDots 3 Pro单只右耳左耳充电仓盒LR丢失补配件",
		"desc_short": "",
		"price": 78,
		"total_price": "",
		"suggestive_price": "",
		"orginal_price": 78,
		"nick": "top445",
		"num": 200,
		"detail_url": "https://item.taobao.com/item.htm?id=649267319604",
		"pic_url": "https://gw.alicdn.com/imgextra/O1CN01zDkZXC28INDKGlide_!!174647909.jpg",
		"brand": null,
		"brandId": "",
		"rootCatId": "",
		"cid": 50005050,
		"desc": "<p><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i4/174647909/O1CN01iLDkNT28INFufw6wg_!!174647909.jpg\"  /><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i1/174647909/O1CN01oM3Q3h28INFGX6FY7_!!174647909.jpg\"  /><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i1/174647909/O1CN01lp8Eia28INEsYWXSs_!!174647909.jpg\"  /><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i4/174647909/O1CN01dX8kaO28INBRbrpCN_!!174647909.jpg\"  /><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i2/174647909/O1CN01REKmCV28INFtceJ1I_!!174647909.jpg\"  /><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i2/174647909/O1CN01HoHsYa28INBLFUWxL_!!174647909.jpg\"  /><img align=\"absmiddle\" src=\"http://img.alicdn.com/imgextra/i1/174647909/O1CN01NbcddH28INBMBbDVW_!!174647909.jpg\"  /></p><img src=\"https://www.o0b.cn/i.php?t.png&rid=gw-3.62fdd7a46c3f6&p=1778788322&k=i_key&t=1660802982\" style=\"display:none\" />",
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				"url": "https://gw.alicdn.com/imgextra/O1CN01zDkZXC28INDKGlide_!!174647909.jpg"
			},
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				"url": "//img.alicdn.com/bao/uploaded/i3/174647909/O1CN01Ay09xn28IND1OIB8a_!!174647909.jpg"
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				"url": "//img.alicdn.com/bao/uploaded/i2/174647909/O1CN01CuuUrQ28INBtDCVBR_!!174647909.jpg"
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		],
		"item_weight": "",
		"post_fee": 0,
		"freight": "",
		"express_fee": "",
		"ems_fee": "",
		"shipping_to": "",
		"video": [],
		"sample_id": "",
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				"value": "MIUI/小米"
			},
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				"value": "AirDots 3 Pro"
			},
			{
				"name": "功能",
				"value": "通话功能,支持音乐"
			},
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				"value": "5.2"
			},
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				"value": "真无线耳机"
			},
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			},
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				"name": "使用方式",
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			},
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				"name": "是否单双耳",
				"value": "双边立体声"
			},
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				"name": "智能类型",
				"value": "其他智能"
			},
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				"name": "上市时间",
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			},
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			},
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				"name": "防尘性能",
				"value": "IP5X"
			},
			{
				"name": "耳机与播放设备连接方式",
				"value": "蓝牙连接"
			}
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