python爬取数据并写入mysql数据库_Python爬取数据并写入MySQL数据库的实例

缺乏、安全感 2022-11-05 12:51 229阅读 0赞

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

![p2nh0qvetk0.jpg][]

按 F12 或 ctrl+u 审查元素，结果如下:

![rds0pyepiar.jpg][]

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-8

import requests

from bs4 import BeautifulSoup

import MySQLdb

print('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:

![a0nw2buvg4w.jpg][]

$ mysql -u hp -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \\g.

Your MySQL connection id is 28

Server version: 5.7.17 MySQL Community Server (GPL)

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.

mysql> use TESTDB

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> 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)

以上这篇Python爬取数据并写入MySQL数据库的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持聚米学院。

[p2nh0qvetk0.jpg]: https://www.jumtu.com/zb_users/upload/2021/01/20/p2nh0qvetk0.jpg
[rds0pyepiar.jpg]: https://www.jumtu.com/zb_users/upload/2021/01/20/rds0pyepiar.jpg
[a0nw2buvg4w.jpg]: https://www.jumtu.com/zb_users/upload/2021/01/20/a0nw2buvg4w.jpg