Python爬取数据并写入MySQL数据库的实例

首先我们来爬取 http://html-color-codes.info/color-names/ 的一些数据。

按 F12 或 ctrl+u 审查元素，结果如下:

结构很清晰简单，我们就是要爬 tr 标签里面的 style 和 tr 下几个并列的 td 标签，下面是爬取的代码:

#!/usr/bin/env python# coding=utf-8import requestsfrom bs4 import BeautifulSoupimport MySQLdbprint('连接到mysql服务器...')db = MySQLdb.connect("localhost","hp","Hp12345.","TESTDB")print('连接上了!')cursor = db.cursor()cursor.execute("DROP TABLE IF EXISTS COLOR")sql = """CREATE TABLE COLOR (  Color CHAR(20) NOT NULL,  Value CHAR(10),  Style CHAR(50) )"""cursor.execute(sql)hdrs = {'User-Agent':'Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)'}url = "http://html-color-codes.info/color-names/"r = requests.get(url, headers = hdrs)soup = BeautifulSoup(r.content.decode('gbk', 'ignore'), 'lxml')trs = soup.find_all('tr') # 获取全部tr标签成为一个列表for tr in trs:    # 遍历列表里所有的tr标签单项 style = tr.get('style') # 获取每个tr标签里的属性style tds = tr.find_all('td') # 将每个tr标签下的td标签获取为列表 td = [x for x in tds] # 获取的列表 name = td[1].text.strip()  # 直接从列表里取值 hex = td[2].text.strip() # print u'颜色: ' + name + u'颜色值: '+ hex + u'背景色样式: ' + style # print 'color: ' + name + '/tvalue: '+ hex + '/tstyle: ' + style insert_color = ("INSERT INTO COLOR(Color,Value,Style)" "VALUES(%s,%s,%s)") data_color = (name, hex, style) cursor.execute(insert_color, data_color) db.commit() # print '******完成此条插入!' print '爬取数据并插入mysql数据库完成...'

运行结果:

$ mysql -u hp -pEnter password: Welcome to the MySQL monitor. Commands end with ; or /g.Your MySQL connection id is 28Server version: 5.7.17 MySQL Community Server (GPL)Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.mysql> use TESTDBReading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> select * from COLOR;+----------------------+--------+----------------------------------------+| Color    | Value | Style         |+----------------------+--------+----------------------------------------+| IndianRed   | CD5C5C | background-color:indianred;   || LightCoral   | F08080 | background-color:lightcoral;   || Salmon    | FA8072 | background-color:salmon;    || DarkSalmon   | E9967A | background-color:darksalmon;   || LightSalmon   | FFA07A | background-color:lightsalmon;   || Crimson    | DC143C | background-color:crimson;    || Red     | FF0000 | background-color:red;     || FireBrick   | B22222 | background-color:fireBrick;   || DarkRed    | 8B0000 | background-color:darkred;    || Pink     | FFC0CB | background-color:pink;     || LightPink   | FFB6C1 | background-color:lightpink;   || HotPink    | FF69B4 | background-color:hotpink;    || DeepPink    | FF1493 | background-color:deeppink;    |...| AntiqueWhite   | FAEBD7 | background-color:antiquewhite;   || Linen    | FAF0E6 | background-color:linen;    || LavenderBlush  | FFF0F5 | background-color:lavenderblush;  || MistyRose   | FFE4E1 | background-color:mistyrose;   || Gainsboro   | DCDCDC | background-color:gainsboro;   || LightGrey   | D3D3D3 | background-color:lightgrey;   || Silver    | C0C0C0 | background-color:silver;    || DarkGray    | A9A9A9 | background-color:darkgray;    || Gray     | 808080 | background-color:gray;     || DimGray    | 696969 | background-color:dimgray;    || LightSlateGray  | 778899 | background-color:lightslategray;  || SlateGray   | 708090 | background-color:slategray;   || DarkSlateGray  | 2F4F4F | background-color:darkslategray;  || Black    | 000000 | background-color:black;    |+----------------------+--------+----------------------------------------+143 rows in set (0.00 sec)