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ins_crawler.py
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# -*- coding: utf-8 -*-
from lxml import etree
import json
import requests
import time
from pymongo import MongoClient
user_name = 'everyone.is.storyteller'
query_hash=''
headers = {
"cookie": "",
'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36',
"Connection": "keep-alive",
"Host": "www.instagram.com",
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
"accept-encoding": "gzip, deflate, sdch, br",
"accept-language": "zh-CN,zh;q=0.8",
"X-Instragram-AJAX": "1",
"X-Requested-With": "XMLHttpRequest",
"Upgrade-Insecure-Requests": "1",
}
BASE_URL = 'https://www.instagram.com/'+user_name+'/'
uri = 'https://www.instagram.com/graphql/query/?query_hash={query_hash}&variables=%7B%22id%22%3A%22{user_id}%22%2C%22first%22%3A12%2C%22after%22%3A%22{cursor}%22%7D'
proxy = {
'http': 'http://127.0.0.1:1080',
'https': 'http://127.0.0.1:1080'
}
#存入数据库
def save_mongo(dict):
conn = MongoClient('localhost', 27017) #地址,端口号
db = conn.spider #数据库
my_set = db.other #集合
try:
my_set.insert(dict)
print('******************insert database success!*************************')
except:
print('###################insert database fail!!#######################')
#获取html
def get_html(url):
try:
response = requests.get(url, headers=headers)
if response.status_code == 200:
return response.text
else:
print('请求网页源代码错误, 错误状态码:', response.status_code)
except Exception as e:
print(e)
return None
def crawler():
try:
requests.adapters.DEFAULT_RETRIES = 5
s = requests.session()
s.keep_alive = False
res = requests.get(BASE_URL,headers = headers)
html = etree.HTML(res.content.decode()) #获取html
all_js_tags = html.xpath('//script[@type="text/javascript"]/text()')
for js_tag in all_js_tags:
if js_tag.strip().startswith('window._sharedData'): #找到目的script
urls = []
#print('.===========...................................................................................................................................................')
data = js_tag[:-1].split('= {')[1] #去掉window._sharedData
js_data = json.loads('{' + data, encoding='utf-8') #json转字典
#用户id
user_id = js_data["entry_data"]["ProfilePage"][0]["graphql"]["user"]["id"]
#帖子总数
page_count = js_data["entry_data"]["ProfilePage"][0]["graphql"]["user"]["edge_owner_to_timeline_media"][
"count"]
page_count = int((page_count-12 + 12 -1)/12) #计算帖子组数 UP(A/B) = int((A+B-1)/B)
#贴文内容位置
edges = js_data["entry_data"]["ProfilePage"][0]["graphql"]["user"]["edge_owner_to_timeline_media"][
"edges"]
total_dict = get_data(edges)
save_mongo(total_dict)
#刷新标签
page_info = js_data["entry_data"]["ProfilePage"][0]["graphql"]["user"]["edge_owner_to_timeline_media"]['page_info']
cursor = page_info['end_cursor'] #帖子末尾符号
flag = page_info['has_next_page'] #data中判断需要异步刷新
print('.............................................................................\n')
#print(cursor, flag)
count=0
while flag:
count+=1
#url = 'https://www.instagram.com/graphql/query/?query_hash=f2405b236d85e8296cf30347c9f08c2a&variables=%7B%22id%22%3A%224851295731%22%2C%22first%22%3A12%2C%22after%22%3A%22QVFDZ1dseExrVUk2ZHlKNGtYRnRkVUh4OFhiVW9GWjY2U19QNTJqVlU4TlJFdXpmMm5PbDVWaF9LT2M2aUk5eGtwVUJ5b1Y0UWtNNURSZU85Vmw1N2c1dQ%3D%3D%22%7D'
url = uri.format(query_hash=query_hash,user_id=user_id,cursor=cursor)
response = requests.get(url, headers=headers,timeout=10)
print(response.status_code)
js_data = response.json()
infos = js_data['data']['user']['edge_owner_to_timeline_media']['edges']
cursor = js_data['data']['user']['edge_owner_to_timeline_media']['page_info']['end_cursor']
flag = js_data['data']['user']['edge_owner_to_timeline_media']['page_info']['has_next_page']
total_dict = get_data(infos)
time.sleep(1)
save_mongo(total_dict)
if count==page_count:
break
#print(cursor, flag)
# print(new_imgs_url[0])
# print(new_content[0])
# print(new_shortcode[0])
# print(new_counts_comment[0])
# print(new_counts_like[0])
# print(new_thumbnail_url[0])
except Exception as e:
print("有异常！！！")
raise e
#获得贴文数据
def get_data(edges):
total_dict = []
for index,edge in enumerate(edges):
dict = {}
dict['time_stamp'] = stamp2date(int(edge["node"]["taken_at_timestamp"])) #时间戳
dict['imgs_url'] = edge["node"]["display_url"] #图片地址
try:
dict['content'] = edge["node"]["edge_media_to_caption"]["edges"][0]["node"]["text"] #正文内容
except:
dict['content']=''
dict['shortcode'] = edge["node"]["shortcode"] #shortcode
dict['counts_comment'] = edge["node"]["edge_media_to_comment"]["count"] #评论数
dict['counts_like'] = edge["node"]["edge_media_preview_like"]["count"] #点赞数
dict['thumbnail_url'] = edge["node"]["thumbnail_resources"][-1]["src"] #缩略图地址
total_dict.append(dict)
print(dict['time_stamp'])
return total_dict
#时间戳转换为指定格式的日期
def stamp2date(timeStamp):
# 使用time
timeArray = time.localtime(timeStamp)
otherStyleTime = time.strftime("%Y--%m--%d %H:%M:%S", timeArray)
return otherStyleTime # 2013--10--10 23:40:00
if __name__ == '__main__':
crawler()