大众点评抓取
网址链接
通过观察每个城市的链接主要区别于ranKld，每个城市有特定的ID，因此先获取到相应城市的ID，便可进行后续抓取。
获取到的城市ID为：
["上海","fce2e3a36450422b7fad3f2b90370efd71862f838d1255ea693b953b1d49c7c0"],
["北京","d5036cf54fcb57e9dceb9fefe3917fff71862f838d1255ea693b953b1d49c7c0"],
["广州","e749e3e04032ee6b165fbea6fe2dafab71862f838d1255ea693b953b1d49c7c0"],
["深圳","e049aa251858f43d095fc4c61d62a9ec71862f838d1255ea693b953b1d49c7c0"],
["天津","2e5d0080237ff3c8f5b5d3f315c7c4a508e25c702ab1b810071e8e2c39502be1"],
["杭州","91621282e559e9fc9c5b3e816cb1619c71862f838d1255ea693b953b1d49c7c0"]
,["南京","d6339a01dbd98141f8e684e1ad8af5c871862f838d1255ea693b953b1d49c7c0"],
["苏州","536e0e568df850d1e6ba74b0cf72e19771862f838d1255ea693b953b1d49c7c0"],
["成都","c950bc35ad04316c76e89bf2dc86bfe071862f838d1255ea693b953b1d49c7c0"],
["武汉","d96a24c312ed7b96fcc0cedd6c08f68c08e25c702ab1b810071e8e2c39502be1"],
["重庆","6229984ceb373efb8fd1beec7eb4dcfd71862f838d1255ea693b953b1d49c7c0"],
["西安","ad66274c7f5f8d27ffd7f6b39ec447b608e25c702ab1b810071e8e2c39502be1"]
抓取页面
抓取分析
通过浏览器分析可发现该网站通过Ajax请求，所有数据来源于：
该链接同之前请求一样，只需要替换rankId便可进行多城市数据获取。最终抓取的数据只需要解析json边可获得所需字段，由于大众没有特别反爬限制，只需要不断轮换userAgent便可绕过反爬。
我们对上海，北京，广州，深圳，天津，杭州，南京，苏州，成都，武汉，重庆，西安等城市的前100家商铺进行数据获取，并分析最终所获取数据集，见《大众点评数据分析》
# 请求头
USER_AGENT_LIST = [
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1",
"Mozilla/5.0 (X11; CrOS i686 2268.111.0) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11",
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6",
"Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1090.0 Safari/536.6",
"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/19.77.34.5 Safari/537.1",
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.9 Safari/536.5"]
head = {
'User-Agent': '{0}'.format(random.sample(USER_AGENT_LIST, 1)[0]) # 随机获取
}
代码展示：
#!/usr/bin/env python
# encoding: utf-8
"""
@version: v1.0
@author: W_H_J
@license: Apache Licence
@contact: 415900617@qq.com
@site:
@software: PyCharm
@file: dazhongFood.py
@time: 2018/7/18 15:46
@describe: 大众点评美食抓取list_city :城市的ID号码，依次是：上海，北京，广州，深圳，天津，杭州，南京，苏州，成都，武汉，重庆，西安"""
import json
import random
import requests
from base.dbhelperimport DBHelper
# 城市列表
list_city = [["上海","fce2e3a36450422b7fad3f2b90370efd71862f838d1255ea693b953b1d49c7c0"],["北京","d5036cf54fcb57e9dceb9fefe3917fff71862f838d1255ea693b953b1d49c7c0"],["广州","e749e3e04032ee6b165fbea6fe2dafab71862f838d1255ea693b953b1d49c7c0"],["深圳","e049aa251858f43d095fc4c61d62a9ec71862f838d1255ea693b953b1d49c7c0"],["天津","2e5d0080237ff3c8f5b5d3f315c7c4a508e25c702ab1b810071e8e2c39502be1"],["杭州","91621282e559e9fc9c5b3e816cb1619c71862f838d1255ea693b953b1d49c7c0"],["南京","d6339a01dbd98141f8e684e1ad8af5c871862f838d1255ea693b953b1d49c7c0"],["苏州","536e0e568df850d1e6ba74b0cf72e19771862f838d1255ea693b953b1d49c7c0"],["成都","c950bc35ad04316c76e89bf2dc86bfe071862f838d1255ea693b953b1d49c7c0"],["武汉","d96a24c312ed7b96fcc0cedd6c08f68c08e25c702ab1b810071e8e2c39502be1"],["重庆","6229984ceb373efb8fd1beec7eb4dcfd71862f838d1255ea693b953b1d49c7c0"],["西安","ad66274c7f5f8d27ffd7f6b39ec447b608e25c702ab1b810071e8e2c39502be1"]]
# 请求头
USER_AGENT_LIST = [
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1",
"Mozilla/5.0 (X11; CrOS i686 2268.111.0) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11",
"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6",
"Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1090.0 Safari/536.6",
"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/19.77.34.5 Safari/537.1",
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.9 Safari/536.5"]
head = {
'User-Agent':'{0}'.format(random.sample(USER_AGENT_LIST, 1)[0])# 随机获取
}
flag =0
code =0
# 解析
def findFood(city,data):
global flag,code
mysql_db = DBHelper()
for datain json.loads(data)["shopBeans"]:
flag +=1
# 详细地址
shopAddress =data["address"]
# 人均消费
avgPrice =data["avgPrice"]
# 商铺图片
defaultPic =data["defaultPic"]
# 分类名称
mainCategoryName =data["mainCategoryName"]
# 所在区域名称
mainRegionName =data["mainRegionName"]
# 口味评分
tasteScore =data["score1"]
# 环境评分
environmentScore =data["score2"]
# 服务评分
serviceScore =data["score3"]
# 商品编号
shopId =data["shopId"]
# 商铺网址
shopUrl ="http://www.dianping.com/shop/"+shopId
# 商铺名称
shopName =data["shopName"]
# 商铺星级
shopPower =data["shopPower"]
sql ='''insert into dazhongfood(shopUrl,shopName, shopId, shopPower, mainRegionName, mainCategoryName, tasteScore, environmentScore, serviceScore, avgPrice, shopAddress, defaultPic, city) VALUES (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)'''
params = (shopUrl,shopName, shopId, shopPower, mainRegionName, mainCategoryName, tasteScore, environmentScore, serviceScore, avgPrice, shopAddress, defaultPic, city)
try:
mysql_db.insert(sql,*params)
code +=1
print("----- 插入:", code, "条------")
except:
print("已存在不再重复插入！！")
print("总条数：", flag)
# 抓取
def foodSpider(city_list):
city =city_list[0]
url =city_list[1]
base_url ="http://www.dianping.com/mylist/ajax/shoprank?rankId="+url
html = requests.get(base_url, headers=head)
findFood(city=city, data=str(html.text))
if __name__ =='__main__':
for city_datain list_city:
foodSpider(city_data)
最终获取结果存储至MySQL。(完整数据集见daZhongFood/data)
最终结果
完整代码见github：https://github.com/Liangchengdeye/DaZhongdianping.git
后续后发布对抓取结果的《大众点评热门餐厅抓取与数据分析》，数据分析结果同上见github。
