利用Python呼叫百度地圖介面爬取小區資訊
阿新 • • 發佈：2019-01-10
前幾天有一個需求，就是想要查到每個一二線城市裡所有小區的經緯度，因此爬取程式和啟動程式如下
community_info_do.py 的程式碼如下
# -*- coding: utf-8 -*-
"""
功能：呼叫百度地圖介面爬取各城市小區基本資訊
呼叫介面：Place APIWeb服務API url：http://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-placeapi
Geocoding APIWeb服務API url：http://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-geocoding
資料庫：house.community_info
欄位：'name', 'address', 'city', 'district', 'scope', 'crawler_time', 'location'
""" community_info.py的程式碼如下
# -*- coding: utf-8 -*-
import MySQLdb
import time
import urllib2
import json
class community_info(object):
def __init__(self, location, city, into_db):
self.location = location
self.city = city
self.ziduan = ['name', 'address', 'city', 'district', 'scope', 'crawler_time', 'location']
self.seq = ['"', '"', '"', '"', '"', '', '"']
self.into_db = into_db
def do(self):
# location =
dif = [self.location[0] - self.location[2], self.location[3] - self.location[1]]
b = [x / 100.0 + self.location[2] for x in xrange(int(dif[0] * 100))]
c = [x / 100.0 + self.location[1] for x in xrange(int(dif[1] * 100))]
d = [[x, y] for x in b for y in c]
cnxn = MySQLdb.connect(host=self.into_db[0], user=self.into_db[1], passwd=self.into_db[2], charset=self.into_db[3])
cursor = cnxn.cursor()
sql = "select name from house.community_info where city = '{}' ".format(self.city)
cursor.execute(sql)
url_database = [item[0] for item in cursor.fetchall()] # 取出當前城市已有小區的名字
# print url_database
# for x in url_database:
# print x
cnxn.commit()
dict_data_list = [] # 字典列表
i = 0
for x in d: # 遍歷當前城市所有劃分出來的小矩形
html = urllib2.urlopen(
r'http://api.map.baidu.com/place/v2/search?query=小區&bounds={},{},{},{}4&page_size=20&output=json&ak=你的ak'.format(
x[0], x[1], x[0] + 0.01, x[1] + 0.01))
b = html.read() # str
print b
c = json.loads(b) # dict
if not c['results']:
continue
# print json.dumps(c, ensure_ascii=False, encoding='UTF-8', indent=4)
for x in c['results']:
dict_data = {}
dict_data['city'] = self.city
dict_data['name'] = x['name'].encode('utf-8', 'ignore')
dict_data['address'] = x['address'].encode('utf-8', 'ignore')
try:
lng_lat = str(x['location']['lng']) + ',' + str(x['location']['lat'])
except KeyError:
lng_lat = '0.0,0.0'
dict_data['location'] = lng_lat
lng_lat = ','.join(lng_lat.split(',')[::-1])
html = urllib2.urlopen(
r'http://api.map.baidu.com/geocoder/v2/?callback=renderReverse&location={}&output=json&pois=1&ak=c9nNGFV74RjSG70xIXdVLVxWPizCqXdw&callba'.format(
lng_lat))
b = html.read() # str
b = b.split('renderReverse&&renderReverse(')[1][:-1]
c = json.loads(b) # dict
dict_data['scope'] = c['result']['business'].split(',')[0].encode('utf-8', 'ignore')
dict_data['crawler_time'] = str(int(time.time())).encode('utf-8', 'ignore')
if not dict_data['scope']:
dict_data['scope'] = '其他'
dict_data['district'] = c['result']['addressComponent']['district'].encode('utf-8', 'ignore')
if not dict_data['district']:
dict_data['district'] = '其他'
dict_data_list.append(dict_data)
# print json.dumps(dict_data, ensure_ascii=False, encoding='UTF-8', indent=4)
cnxn = MySQLdb.connect(host=self.into_db[0], user=self.into_db[1], passwd=self.into_db[2],
charset=self.into_db[3]) ###
cursor = cnxn.cursor()
# for x in dict_data_list:
# print json.dumps(x, ensure_ascii=False, encoding='UTF-8', indent=4)
print len(dict_data_list)
for x in dict_data_list : # 遍歷字典列表
if not x['name'].decode('utf-8') in url_database: # 判斷小區是否已經存在
sql = "insert into house.community_info ({}) values ({})".format(
",".join([item for item in self.ziduan]),
",".join([j + x[i] + j for j, i in zip(self.seq, self.ziduan)]))
cursor.execute(sql)
cnxn.commit()
cnxn.close()
如有好的建議或者提醒請在下方留言，我一定會虛心採納