本文实例讲述了Python3实现的爬虫爬取数据并存入mysql数据库操作。分享给大家供大家参考，具体如下：
爬一个电脑客户端的订单。罗总推荐，抓包工具用的是HttpAnalyzerStdV7，与chrome自带的F12类似。客户端有接单大厅，罗列所有订单的简要信息。当单子被接了，就不存在了。我要做的是新出订单就爬取记录到我的数据库zyc里。
设置每10s爬一次。
抓包工具页面如图：
首先是爬虫，先找到数据存储的页面，再用正则爬出。
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# -*- coding:utf-8 -*-import reimport requestsimport pymysql #Python3的mysql模块，Python2 是mysqldbimport datetimeimport timedef GetResults(): requests.adapters.DEFAULT_RETRIES = 5 #有时候报错，我在网上找的不知道啥意思，好像也没用。 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): #页码 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的方式访问。网页解码成中文。接单大厅页。 # html=html.content.decode('utf-8') outcome_reg_order_no = re.findall(r'"order_no":"(.*?)","game_area"', html) #获取订单编号，因为订单详情页url与订单编号有关。 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) #订单详细页 html_order=html_order.content.decode('utf-8') # print(html_order) outcome_reg = [] for i in range(len(reg)):#每条订单 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) #结果集 return results except: time.sleep(5) #有时太频繁会报错。 print("失败") pass |
根据爬虫结果建表，这里变量名要准确。并且要设置唯一索引，使每次爬的只有新订单入库。
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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') # 连接数据库编码注意是utf8，不然中文结果输出会乱码 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)# 执行SQL语句 cursor.execute(sql_key) db.close() # 关闭数据库连 |
把数据导入Mysql，注意编码和字段之间的匹配。
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def IntoMysql(results): 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') # 连接数据库编码注意是utf8，不然中文结果输出会乱码 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() |
每十秒运行一次。
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mysql_create()i=0while True: results = GetResults() IntoMysql(results) i=i+1 print("爬虫次数:",i) time.sleep(10) |
结果如图：
希望本文所述对大家Python程序设计有所帮助。
原文链接：https://blog.csdn.net/qq_37408031/article/details/78594174
