search
HomeBackend DevelopmentPython TutorialExample code sharing of how python implements xml and database reading conversion

这篇文章主要给大家介绍了关于利用python实现xml与数据库读取转换的方法,文中通过示例代码介绍的非常详细,对大家具有一定的参考学习价值,需要的朋友们下面来一起看看吧。

前言

xml课的第三第四个作业都是用java编程来实现xml dom的一些转换, 因为自己没怎么学过java,因此和老师说了下想用python来实现第三第四个作业,下面就直接贴代码了

xml文档


<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="1.xslt" rel="external nofollow" ?>
<!DOCTYPE sys_info [
 <!ELEMENT sys_info (info+)>
 <!ELEMENT info (sysDescr,sysUpTime,sysContact,sysName)>
 <!ELEMENT sysDescr (#PCDATA)>
 <!ELEMENT sysUpTime (#PCDATA)>
 <!ELEMENT sysContact (#PCDATA)>
 <!ELEMENT sysName (#PCDATA)>
 <!ATTLIST info ip CDATA #REQUIRED>
]>
 
<sys_info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="1.xsd">
 <info ip="192.168.1.1">
  <sysDescr>X86-Windows2000</sysDescr>
  <sysUpTime>9 hours 42 minutes</sysUpTime>
  <sysContact>zhangsan</sysContact>
  <sysName>computerZhang</sysName>
 
 </info>
 <info ip="192.168.1.3">
  <sysDescr>router</sysDescr>
  <sysUpTime>24 hours</sysUpTime>
  <sysContact>ruijie</sysContact>
  <sysName>Router2</sysName>
 </info>
 <info ip="192.168.2.1">
  <sysDescr>router</sysDescr>
  <sysUpTime>89 hours</sysUpTime>
  <sysContact>Cisco</sysContact>
  <sysName>Router3</sysName>
 </info>
</sys_info>

解析xml文档用的是python自带的xml库ElementTree, 读取mysql可以安装MySQLdb模块


apt-get install python-MySQLdb

程序运行如下


root@lj /h/s/x/3# python 21.py -h
usage: 21.py [-h] status
 
positional arguments:
 status  0clar,1read,2insert

读取xml保存到数据库


root@lj /h/s/x/3# python 21.py 2
插入语句: insert into info values (&#39;192.168.1.1&#39;,&#39;X86-Windows2000&#39;,&#39;9 hours 42 minutes&#39;,&#39;zhangsan&#39;,&#39;computerZhang&#39;)
插入语句: insert into info values (&#39;192.168.1.3&#39;,&#39;router&#39;,&#39;24 hours&#39;,&#39;ruijie&#39;,&#39;Router2&#39;)
插入语句: insert into info values (&#39;192.168.2.1&#39;,&#39;router&#39;,&#39;89 hours&#39;,&#39;Cisco&#39;,&#39;Router3&#39;)
insert success!!!

读取数据库保存到xml文档


root@lj /h/s/x/3# python 21.py 1
+-------------+-----------------+--------------------+------------+---------------+
| IP地址 | sysDescr.0 | sysUpTime.0  | sysContact | sysName.0 |
+-------------+-----------------+--------------------+------------+---------------+
| 192.168.1.1 | X86-Windows2000 | 9 hours 42 minutes | zhangsan | computerZhang |
| 192.168.1.3 |  router  |  24 hours  | ruijie | Router2 |
| 192.168.2.1 |  router  |  89 hours  | Cisco | Router3 |
+-------------+-----------------+--------------------+------------+---------------+
write into sys.xml...

建立数据库的sql文件:


-- MySQL dump 10.16 Distrib 10.1.21-MariaDB, for debian-linux-gnu (x86_64)
--
-- Host: localhost Database: localhost
-- ------------------------------------------------------
-- Server version 10.1.21-MariaDB-5
 
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE=&#39;+00:00&#39; */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE=&#39;NO_AUTO_VALUE_ON_ZERO&#39; */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
 
--
-- Table structure for table `info`
--
 
DROP TABLE IF EXISTS `info`;
/*!40101 SET @saved_cs_client  = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `info` (
 `ip` char(15) NOT NULL,
 `sysDescr` varchar(20) DEFAULT NULL,
 `sysUpTime` varchar(40) DEFAULT NULL,
 `sysContract` varchar(20) DEFAULT NULL,
 `sysName` varchar(20) DEFAULT NULL,
 PRIMARY KEY (`ip`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
/*!40101 SET character_set_client = @saved_cs_client */;
 
--
-- Dumping data for table `info`
--
 
LOCK TABLES `info` WRITE;
/*!40000 ALTER TABLE `info` DISABLE KEYS */;
INSERT INTO `info` VALUES (&#39;192.168.1.1&#39;,&#39;X86-Windows2000&#39;,&#39;9 hours 42 minutes&#39;,&#39;zhangsan&#39;,&#39;computerZhang&#39;),(&#39;192.168.1.3&#39;,&#39;router&#39;,&#39;24 hours&#39;,&#39;ruijie&#39;,&#39;Router2&#39;),(&#39;192.168.2.1&#39;,&#39;router&#39;,&#39;89 hours&#39;,&#39;Cisco&#39;,&#39;Router3&#39;);
/*!40000 ALTER TABLE `info` ENABLE KEYS */;
UNLOCK TABLES;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
 
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
-- Dump completed on 2017-03-23 15:36:31

下面是主要代码


#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Date : 2017-03-23 14:47:39
# @Author : 江sir (2461805286@qq.com)
# @Link : http://www.blogsir.com.cn
# @Version : $1.1
 
import sys
import xml.etree.ElementTree as ET
import MySQLdb
import argparse
from prettytable import PrettyTable 
 
&#39;&#39;&#39;
一个xml作业,自己用python实现了从xml读取到数据库,和从数据库读取到xml的功能
&#39;&#39;&#39;
 
def buildNewsXmlFile(data):
 
 
 root = ET.Element(&#39;sys_info&#39;)#创建sys_info根元素
 # print help(ET)
 info = ET.SubElement(root, "info",attrib={&#39;ip&#39;:&#39;%s&#39;%data[0][0]})#创建四个二级元素
 sysDescr = ET.SubElement(info,"sysDescr")
 sysUpTime = ET.SubElement(info,"sysUpTime")
 sysContact = ET.SubElement(info,"sysContact")
 sysName = ET.SubElement(info,"sysName")
 sysDescr.text = data[0][1]
 sysUpTime.text = data[0][2]
 sysContact.text = data[0][3]
 sysName.text = data[0][4]
 
 info = ET.SubElement(root, "info",attrib={&#39;ip&#39;:&#39;%s&#39;%data[1][0]})
 sysDescr = ET.SubElement(info,"sysDescr")
 sysUpTime = ET.SubElement(info,"sysUpTime")
 sysContact = ET.SubElement(info,"sysContact")
 sysName = ET.SubElement(info,"sysName")
 sysDescr.text = data[1][1]
 sysUpTime.text = data[1][2]
 sysContact.text = data[1][3]
 sysName.text = data[1][4]
 
 info = ET.SubElement(root, "info",attrib={&#39;ip&#39;:&#39;%s&#39;%data[2][0]})
 sysDescr = ET.SubElement(info,"sysDescr")
 sysUpTime = ET.SubElement(info,"sysUpTime")
 sysContact = ET.SubElement(info,"sysContact")
 sysName = ET.SubElement(info,"sysName")
 sysDescr.text = data[2][1]
 sysUpTime.text = data[2][2]
 sysContact.text = data[2][3]
 sysName.text = data[2][4]
 
 print &#39;write into sys.xml...&#39;
 tree = ET.ElementTree(root)
 tree.write("sys.xml")
 
 
def xml_parser():
 data = {}
 data_list = []
 tree = ET.parse(&#39;21.xml&#39;)
 root = tree.getroot()# 获取根元素
 for info in root.findall(&#39;info&#39;): #查找所有info元素
  for child in info: #对每个info元素遍历属性和子节点
   data [&#39;ip&#39;]= info.attrib[&#39;ip&#39;]
   data[child.tag] = child.text
 
  # print data.values()
  data_list.append(data.values())
 
 
 # print data_list
 return data_list
 
 
 
def get_Mysql():
 conn = MySQLdb.connect(&#39;localhost&#39;,&#39;root&#39;,&#39;root&#39;,&#39;sys_info2&#39;,charset=&#39;utf8&#39;)
 cursor = conn.cursor()
 cursor.execute(&#39;select * from info&#39;);
 result = cursor.fetchall()
 if not result:
  print &#39;please insert the database first&#39;
  sys.exit()
 
 
 x = PrettyTable([&#39;IP地址&#39;,&#39;sysDescr.0&#39;,&#39;sysUpTime.0&#39;,&#39;sysContact&#39;,&#39;sysName.0&#39;])
 for i in result:
  x.add_row(i)
 print x
 
 # print result
 return result
 
def set_Mysql(data):
 conn = MySQLdb.connect(&#39;localhost&#39;,&#39;root&#39;,&#39;root&#39;,&#39;sys_info2&#39;,charset=&#39;utf8&#39;)
 cursor = conn.cursor()
 for i in data:
  # print tuple(i)
  sysName,ip,sysUpTime,sysDescr,sysContact = tuple(i)
  sql = "insert into info values (&#39;%s&#39;,&#39;%s&#39;,&#39;%s&#39;,&#39;%s&#39;,&#39;%s&#39;)"%(ip,sysDescr,sysUpTime,sysContact,sysName)
  print &#39;插入语句:&#39;,sql
  try:
   cursor.execute(sql)
  except:
   print &#39;please clear the database&#39;
   sys.exit()
 print &#39;insert success!!!&#39;
 conn.commit()
 conn.close()
 
 
def clear_Mysql():
 conn = MySQLdb.connect(&#39;localhost&#39;,&#39;root&#39;,&#39;root&#39;,&#39;sys_info2&#39;,charset=&#39;utf8&#39;)
 cursor = conn.cursor()
 cursor.execute(&#39;delete from info&#39;)
 conn.commit()
 conn.close()
 
 
def main():
 parser = argparse.ArgumentParser()
 parser.add_argument(&#39;status&#39;,type=int,help="0clar,1read,2insert")
 arg = parser.parse_args()
 # print arg
 status = arg.status
 if status == 1:
  data = get_Mysql()
  buildNewsXmlFile(data)
 elif status == 2:
  data = xml_parser()
  set_Mysql(data)
 elif status == 0:
  clear_Mysql()
 else:
  print &#39;usage %s [0|1|2]&#39;%sys.argv[0]
 
if name == &#39;main&#39;:
 main()

第四个作业是web编程,用python的flask框架即可快速实现一个xml文档的显示,文件过多,就不贴了

总结

The above is the detailed content of Example code sharing of how python implements xml and database reading conversion. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
详细讲解Python之Seaborn(数据可视化)详细讲解Python之Seaborn(数据可视化)Apr 21, 2022 pm 06:08 PM

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于Seaborn的相关问题,包括了数据可视化处理的散点图、折线图、条形图等等内容,下面一起来看一下,希望对大家有帮助。

详细了解Python进程池与进程锁详细了解Python进程池与进程锁May 10, 2022 pm 06:11 PM

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于进程池与进程锁的相关问题,包括进程池的创建模块,进程池函数等等内容,下面一起来看一下,希望对大家有帮助。

Python自动化实践之筛选简历Python自动化实践之筛选简历Jun 07, 2022 pm 06:59 PM

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于简历筛选的相关问题,包括了定义 ReadDoc 类用以读取 word 文件以及定义 search_word 函数用以筛选的相关内容,下面一起来看一下,希望对大家有帮助。

归纳总结Python标准库归纳总结Python标准库May 03, 2022 am 09:00 AM

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于标准库总结的相关问题,下面一起来看一下,希望对大家有帮助。

分享10款高效的VSCode插件,总有一款能够惊艳到你!!分享10款高效的VSCode插件,总有一款能够惊艳到你!!Mar 09, 2021 am 10:15 AM

VS Code的确是一款非常热门、有强大用户基础的一款开发工具。本文给大家介绍一下10款高效、好用的插件,能够让原本单薄的VS Code如虎添翼,开发效率顿时提升到一个新的阶段。

Python数据类型详解之字符串、数字Python数据类型详解之字符串、数字Apr 27, 2022 pm 07:27 PM

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于数据类型之字符串、数字的相关问题,下面一起来看一下,希望对大家有帮助。

详细介绍python的numpy模块详细介绍python的numpy模块May 19, 2022 am 11:43 AM

本篇文章给大家带来了关于Python的相关知识,其中主要介绍了关于numpy模块的相关问题,Numpy是Numerical Python extensions的缩写,字面意思是Python数值计算扩展,下面一起来看一下,希望对大家有帮助。

python中文是什么意思python中文是什么意思Jun 24, 2019 pm 02:22 PM

pythn的中文意思是巨蟒、蟒蛇。1989年圣诞节期间,Guido van Rossum在家闲的没事干,为了跟朋友庆祝圣诞节,决定发明一种全新的脚本语言。他很喜欢一个肥皂剧叫Monty Python,所以便把这门语言叫做python。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment