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Python3爬蟲全國(guó)地址信息

更新時(shí)間：2019年01月05日 11:37:23 作者：只是個(gè)寶寶

今天小編就為大家分享一篇關(guān)于Python3爬蟲全國(guó)地址信息，小編覺得內(nèi)容挺不錯(cuò)的，現(xiàn)在分享給大家，具有很好的參考價(jià)值，需要的朋友一起跟隨小編來看看吧

PHP方式寫的一團(tuán)糟所以就用python3重寫了一遍，所以因?yàn)榈诙螌懥耍悸芬哺逦诵?/p>

提醒：可能會(huì)有502的錯(cuò)誤，所以做了異常以及數(shù)據(jù)庫事務(wù)處理，暫時(shí)沒有想到更好的優(yōu)化方法，所以就先這樣吧。待更懂python再進(jìn)一步優(yōu)化哈

歡迎留言賜教~

#!C:\Users\12550\AppData\Local\Programs\Python\Python37\python.exe
# -*- coding: utf-8 -*-
from urllib.request import urlopen
from bs4 import BeautifulSoup
import pymysql
import urllib.request
import re
from urllib.error import URLError, HTTPError
conn = pymysql.connect(host='127.0.0.1', user='root', passwd='root', db='test', charset='utf8')
db = conn.cursor()
curr_url = ''
# 請(qǐng)求網(wǎng)頁
def get_html(url):
  global curr_url
  user_agent = 'Mozilla/6.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.6796.99 Safari/537.36'
  response = urllib.request.Request(url)
  response.add_header('User-Agent', user_agent)
  response = urllib.request.urlopen(response)
  html = BeautifulSoup(response.read(), "html.parser", from_encoding='gbk')
  return html
def get_list(url, level=1, pid=0, get_level=2):
  data = [];
  level_arr = {'1': 'provincetr', '2': 'citytr', '3': 'countytr', '4': 'towntr', '5': 'villagetr'}
  try:
    print(url)
    html = get_html(url)
    c_url = url
    tr_list = html.findAll('tr', {'class': level_arr[str(level)]})
    for tr in tr_list:
      region_name, href, page = '', '', ''
      td_list = tr.findAll('td')
      for td in td_list:
        region_name = td.get_text();
        # 判斷是否存在該省份
        if (level == 1):
          sql = "select * from region where region_name='" + region_name + "'"
          db.execute(sql)
          exist = db.fetchone()
          if(exist):
            continue
        # 判斷是否全數(shù)字-非法則跳過
        if (region_name.isdigit()):
          continue
        if (region_name):
          sql = "insert into region(region_name,pid,level,url) value('" + region_name + "','" + str(
            pid) + "','" + str(level) + "','" + url + "')"
          db.execute(sql)
          db.execute('SELECT LAST_INSERT_ID();')
          last_id = db.fetchone()[0]
        if (td.a):
          page = td.a.attrs['href']
          pattern = re.compile(r'\w*.html')
          url = re.sub(pattern, page, c_url)
          if (level <= get_level):
            get_list(url, level + 1, last_id)
      # 每個(gè)省份執(zhí)行完成，則提交
      if (level == 1):
        conn.commit()
    return data;
  except HTTPError as e:
    # 如果有出錯(cuò)，則回滾
    conn.rollback()
    print(e) # HTTP Error 502: Proxy Error
url = 'http://www.stats.gov.cn/tjsj/tjbz/tjyqhdmhcxhfdm/2017/index.html'
get_list(url)
print('執(zhí)行完成')

總結(jié)

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