python3:爬虫并存入mysql

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。

# -*- 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&timestamp=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&timestamp=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。

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。

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。

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：