本文例項講述了Python3實現的爬蟲爬取資料並存入mysql資料庫操作。分享給大家供大家參考，具體如下：

爬一個電腦客戶端的訂單。羅總推薦，抓包工具用的是HttpAnalyzerStdV7，與chrome自帶的F12類似。客戶端有接單大廳，羅列所有訂單的簡要資訊。當單子被接了，就不存在了。我要做的是新出訂單就爬取記錄到我的資料庫zyc裡。

設定每10s爬一次。

抓包工具頁面如圖：

首先是爬蟲，先找到資料儲存的頁面，再用正則爬出。

# -*- coding:utf-8 -*-
import re
import requests
import pymysql #Python3的mysql模組，Python2 是mysqldb
import datetime
import time
def GetResults():
  requests.adapters.DEFAULT_RETRIES = 5 #有時候報錯，我在網上找的不知道啥意思，好像也沒用。
  reg = [r'"id":(.*?),',r'"order_no":"(.*?)",r'"order_title":"(.*?)",r'"publish_desc":"(.*?)",r'"game_area":"(.*?)\\/(.*?)\\/(.*?)",r'"order_current":"(.*?)",r'"order_content":"(.*?)",r'"order_hours":(.*?),r'"order_price":"(.*?)",r'"add_price":"(.*?)",r'"safe_money":"(.*?)",r'"speed_money":"(.*?)",r'"order_status_desc":"(.*?)",r'"order_lock_desc":"(.*?)",r'"cancel_type_desc":"(.*?)",r'"kf_status_desc":"(.*?)",r'"is_show_pwd":(.*?),r'"game_pwd":"(.*?)",r'"game_account":"(.*?)",r'"game_actor":"(.*?)",r'"left_hours":"(.*?)",r'"created_at":"(.*?)",r'"account_id":"(.*?)",r'"mobile":"(.*?)",r'"contact":"(.*?)",r'"qq":"(.*?)"},']
  results=[]
  try:
    for l in range(1,2):   #頁碼
      proxy = {'HTTP':'61.135.155.82:443'} #代理ip
      html = requests.get('https://www.dianjingbaozi.com/api/dailian/soldier/hall?access_token=3ef3abbea1f6cf16b2420eb962cf1c9a&dan_end=&dan_start=&game_id=2&kw=&order=price_desc&page=%d'%l+'&pagesize=30&price_end=0&price_start=0&server_code=000200000000&sign=ca19072ea0acb55a2ed2486d6ff6c5256c7a0773×tamp=1511235791&type=public&type_id=%20HTTP/1.1',proxies=proxy) # 用get的方式訪問。網頁解碼成中文。接單大廳頁。
      #
      html=html.content.decode('utf-8')
      outcome_reg_order_no = re.findall(r'"order_no":"(.*?)","game_area"',html)  #獲取訂單編號，因為訂單詳情頁url與訂單編號有關。
      for j in range(len(outcome_reg_order_no)):
        html_order = requests.get('http://www.lpergame.com/api/dailian/order/detail?access_token=eb547a14bad97e1ee5d835b32cb83ff1&order_no=' +outcome_reg_order_no[j] + '&sign=c9b503c0e4e8786c2945dc0dca0fabfa1ca4a870×tamp=1511146154 HTTP/1.1',proxies=proxy)  #訂單詳細頁
        html_order=html_order.content.decode('utf-8')
        # print(html_order)
        outcome_reg = []
        for i in range(len(reg)):#每條訂單
          outcome = re.findall(reg[i],html_order)
          if i == 4:
            for k in range(len(outcome)):
              outcome_reg.extend(outcome[k])
          else:
            outcome_reg.extend(outcome)
        results.append(outcome_reg) #結果集
    return results
  except:
    time.sleep(5)  #有時太頻繁會報錯。
    print("失敗")
    pass

根據爬蟲結果建表，這裡變數名要準確。並且要設定唯一索引，使每次爬的只有新訂單入庫。

def mysql_create():
  mysql_host = ''
  mysql_db = 'zyc'
  mysql_user = 'zyc'
  mysql_password = ''
  mysql_port = 3306
  db = pymysql.connect(host=mysql_host,port=mysql_port,user=mysql_user,password=mysql_password,db=mysql_db,charset='utf8') # 連線資料庫編碼注意是utf8，不然中文結果輸出會亂碼
  sql_create = "CREATE TABLE DUMPLINGS (id CHAR(10),order_no CHAR(50),order_title VARCHAR(265),publish_desc VARCHAR(265),game_name VARCHAR(265),"\
         "game_area VARCHAR(265),game_area_distinct VARCHAR(265),order_current VARCHAR(3908),order_content VARCHAR(3908),order_hours CHAR(10)," \
         "order_price FLOAT(10),add_price FLOAT(10),safe_money FLOAT(10),speed_money FLOAT(10),order_status_desc VARCHAR(265),"\
         "order_lock_desc VARCHAR(265),cancel_type_desc VARCHAR(265),kf_status_desc VARCHAR(265),is_show_pwd TINYINT,game_pwd CHAR(50),"\
         "game_account VARCHAR(265),game_actor VARCHAR(265),left_hours VARCHAR(265),created_at VARCHAR(265),account_id CHAR(50),"\
         "mobile VARCHAR(265),mobile2 VARCHAR(265),contact VARCHAR(265),contact2 VARCHAR(265),qq VARCHAR(265),"\
         "PRIMARY KEY (`id`),UNIQUE KEY `no`(`order_no`))ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8"
  sql_key="CREATE UNIQUE INDEX id ON DUMPLINGS(id)"
  cursor = db.cursor()
  cursor.execute("DROP TABLE IF EXISTS DUMPLINGS")
  cursor.execute(sql_create)# 執行SQL語句
  cursor.execute(sql_key)
  db.close() # 關閉資料庫連

把資料匯入Mysql，注意編碼和欄位之間的匹配。

def IntoMysql(results):
  mysql_host = ''
  mysql_db = 'zyc'
  mysql_user = 'zyc'
  mysql_password = ''
  mysql_port = 3306
  db = pymysql.connect(host=mysql_host,charset='utf8') # 連線資料庫編碼注意是utf8，不然中文結果輸出會亂碼
  cursor = db.cursor()
  for j in range(len(results)):
    try:
      sql = "INSERT INTO DUMPLINGS(id,order_no,order_title,publish_desc,game_name," \
         "game_area,game_area_distinct,order_current,order_content,order_hours," \
         "order_price,add_price,safe_money,speed_money,order_status_desc," \
         "order_lock_desc,cancel_type_desc,kf_status_desc,is_show_pwd,game_pwd," \
         "game_account,game_actor,left_hours,created_at,account_id," \
         "mobile,mobile2,contact,contact2,qq) VALUES ("
      for i in range(len(results[j])):
        sql = sql + "'" + results[j][i] + "',"
      sql = sql[:-1] + ")"
      sql = sql.encode('utf-8')
      cursor.execute(sql)
      db.commit()
    except:pass
  db.close()

每十秒執行一次。

mysql_create()
i=0
while True:
  results = GetResults()
  IntoMysql(results)
  i=i+1
  print("爬蟲次數:",i)
  time.sleep(10)

結果如圖：

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希望本文所述對大家Python程式設計有所幫助。