毕设一:python 爬取苏宁的商品评论

毕设需要大量的商品评论,网上找的数据比较旧了,自己动手

代理池用的proxypool,github:https://github.com/jhao104/proxy_pool

ua:fake_useragent

 1 # 评价较多的店铺(苏宁推荐)
 2 https://tuijian.suning.com/recommend-portal/recommendv2/biz.jsonp?parameter=%E5%8D%8E%E4%B8%BA&sceneIds=2-1&count=10
 3 
 4 # 评价
 5 https://review.suning.com/ajax/cluster_review_lists/general-30259269-000000010748901691-0000000000-total-1-default-10-----reviewList.htm?callback=reviewList
 6 
 7 # clusterid
 8 # 在查看全部评论的href中,实际测试发现是执行js加上的,两种方案
 9 # 1.去匹配js中的clusterId
10 # 2.或者用selenium/phantomjs去请求执行js之后的页面然后解析html获得href

代码:

  1 # -*- coding: utf-8 -*-
  2 # @author: Tele
  3 # @Time  : 2019/04/15 下午 8:20
  4 import time
  5 import requests
  6 import os
  7 import json
  8 import re
  9 from fake_useragent import UserAgent
 10 
 11 
 12 class SNSplider:
 13     flag = True
 14     regex_cluser_id = re.compile("\"clusterId\":\"(.{8})\"")
 15     regex_comment = re.compile("reviewList\((.*)\)")
 16 
 17     @staticmethod
 18     def get_proxy():
 19         return requests.get("http://127.0.0.1:5010/get/").content.decode()
 20 
 21     @staticmethod
 22     def get_ua():
 23         ua = UserAgent()
 24         return ua.random
 25 
 26     def __init__(self, kw_list):
 27         self.kw_list = kw_list
 28         # 评论url 参数顺序:cluser_id,sugGoodsCode,页码
 29         self.url_temp = "https://review.suning.com/ajax/cluster_review_lists/general-{}-{}-0000000000-total-{}-default-10-----reviewList.htm"
 30         self.headers = {
 31             "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36",
 32         }
 33         self.proxies = {
 34             "http": None
 35         }
 36         self.parent_dir = None
 37         self.file_dir = None
 38 
 39     # ua,proxy
 40     def check(self):
 41         self.headers["User-Agent"] = SNSplider.get_ua()
 42         proxy = "http://" + SNSplider.get_proxy()
 43         self.proxies["http"] = proxy
 44         print("ua:", self.headers["User-Agent"])
 45         print("proxy:", self.proxies["http"])
 46 
 47     # 评论
 48     def parse_url(self, cluster_id, sugGoodsCode, page):
 49         url = self.url_temp.format(cluster_id, sugGoodsCode, page)
 50         response = requests.get(url, headers=self.headers, proxies=self.proxies, verify=False)
 51         if response.status_code == 200:
 52             print(url)
 53             if len(response.content) < 0:
 54                 return
 55             data = json.loads(SNSplider.regex_comment.findall(response.content.decode())[0])
 56             if "commodityReviews" in data:
 57                 # 评论
 58                 comment_list = data["commodityReviews"]
 59                 if len(comment_list) > 0:
 60                     item_list = list()
 61                     for comment in comment_list:
 62                         item = dict()
 63                         try:
 64                             # 商品名
 65                             item["referenceName"] = comment["commodityInfo"]["commodityName"]
 66                         except:
 67                             item["referenceName"] = None
 68                         # 评论时间
 69                         item["creationTime"] = comment["publishTime"]
 70                         # 内容
 71                         item["content"] = comment["content"]
 72                         # label
 73                         item["label"] = comment["labelNames"]
 74                         item_list.append(item)
 75 
 76                     # 保存
 77                     with open(self.file_dir, "a", encoding="utf-8") as file:
 78                         file.write(json.dumps(item_list, ensure_ascii=False, indent=2))
 79                         file.write("\n")
 80                     time.sleep(5)
 81             else:
 82                 SNSplider.flag = False
 83         else:
 84             print("评论页出错")
 85 
 86     # 提取商品信息
 87     def get_product_info(self):
 88         url_temp = "https://tuijian.suning.com/recommend-portal/recommendv2/biz.jsonp?parameter={}&sceneIds=2-1&count=10"
 89         result_list = list()
 90         for kw in self.kw_list:
 91             url = url_temp.format(kw)
 92             response = requests.get(url, headers=self.headers, proxies=self.proxies, verify=False)
 93             if response.status_code == 200:
 94                 kw_dict = dict()
 95                 id_list = list()
 96                 data = json.loads(response.content.decode())
 97                 skus_list = data["sugGoods"][0]["skus"]
 98                 if len(skus_list) > 0:
 99                     for skus in skus_list:
100                         item = dict()
101                         sugGoodsCode = skus["sugGoodsCode"]
102                         # 请求cluserId
103                         item["sugGoodsCode"] = sugGoodsCode
104                         item["cluster_id"] = self.get_cluster_id(sugGoodsCode)
105                         id_list.append(item)
106                 kw_dict["title"] = kw
107                 kw_dict["id_list"] = id_list
108                 result_list.append(kw_dict)
109             else:
110                 pass
111         return result_list
112 
113     # cluserid
114     def get_cluster_id(self, sugGoodsCode):
115         self.check()
116         url = "https://product.suning.com/0000000000/{}.html".format(sugGoodsCode[6::])
117         response = requests.get(url, headers=self.headers, proxies=self.proxies, verify=False)
118         if response.status_code == 200:
119             cluser_id = None
120             try:
121                 cluser_id = SNSplider.regex_cluser_id.findall(response.content.decode())[0]
122             except:
123                 pass
124             return cluser_id
125         else:
126             print("请求cluster id出错")
127 
128     def get_comment(self, item_list):
129         if len(item_list) > 0:
130             for item in item_list:
131                 id_list = item["id_list"]
132                 item_title = item["title"]
133                 if len(id_list) > 0:
134                     self.parent_dir = "f:/sn_comment/" + item_title + time.strftime("-%Y-%m-%d-%H-%M-%S",
135                                                                                     time.localtime(time.time()))
136                     if not os.path.exists(self.parent_dir):
137                         os.makedirs(self.parent_dir)
138                     for product_code in id_list:
139                         # 检查proxy,ua
140                         sugGoodsCode = product_code["sugGoodsCode"]
141                         cluster_id = product_code["cluster_id"]
142                         if not cluster_id:
143                             continue
144                         page = 1
145                         # 检查目录
146                         self.file_dir = self.parent_dir + "/" + sugGoodsCode[6::] + "_ratecontent.txt"
147                         self.check()
148                         while SNSplider.flag:
149                             self.parse_url(cluster_id, sugGoodsCode, page)
150                             page += 1
151                         SNSplider.flag = True
152                 else:
153                     print("---error,empty id list---")
154         else:
155             print("---error,empty item list---")
156 
157     def run(self):
158         self.check()
159         item_list = self.get_product_info()
160         print(item_list)
161         self.get_comment(item_list)
162 
163 
164 def main():
165     # , "华为mate20pro", "vivoz3", "oppok1", "荣耀8x", "小米9", "小米mix3", "三星s9", "iphonexr", "iphonexs"
166     # "华为p30pro", "华为mate20pro", "vivoz3""oppok1""荣耀8x", "小米9"
167     kw_list = ["小米mix3", "三星s9", "iphonexr", "iphonexs"]
168     splider = SNSplider(kw_list)
169     splider.run()
170 
171 
172 if __name__ == '__main__':
173     main()

 

 

 

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转载自www.cnblogs.com/tele-share/p/10719925.html
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