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Python爬取数据并写入MySQL数据库的实例

转载 作者:qq735679552 更新时间:2022-09-27 22:32:09 37 4
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首先我们来爬取 http://html-color-codes.info/color-names/ 的一些数据.

Python爬取数据并写入MySQL数据库的实例

按 f12 或 ctrl+u 审查元素,结果如下

Python爬取数据并写入MySQL数据库的实例

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

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#!/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

Python爬取数据并写入MySQL数据库的实例

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$ 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)
copyright (c) 2000 , 2011 , oracle and / or its affiliates. all rights reserved.
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)

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原文链接:https://blog.csdn.net/Oscer2016/article/details/70257956 。

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