python3:爬蟲並存入mysql

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信息。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數據庫zyc裏。

設置每10s爬一次。

抓包工具頁面如圖：

首先是爬蟲，先找到數據存儲的頁面，再用正則爬出。

# -*- coding:utf-8 -*-
import re
import requests
import pymysql  #Python3的mysql模塊，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&timestamp=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，因爲訂單詳情頁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&timestamp=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，這裏變量名要準確。並且要設置唯一索引，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')  # 連接數據庫編碼注意是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()  # 關閉數據庫連

把數據導入Mysql，注意編碼和字段之間的匹配。

def IntoMysql(results):

    mysql_host = ''
    mysql_db = 'zyc'
    mysql_user = 'zyc'
    mysql_password = ''
    mysql_port = 3306
    db = pymysql.connect(host=mysql_host, port=mysql_port, user=mysql_user, password=mysql_password, db=mysql_db,charset='utf8')  # 連接數據庫編碼注意是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()

每十秒運行一次。

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：