利用python实现xml与数据库读取转换的方法


Posted in Python onJune 17, 2017

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 ('192.168.1.1','X86-Windows2000','9 hours 42 minutes','zhangsan','computerZhang')
插入语句: insert into info values ('192.168.1.3','router','24 hours','ruijie','Router2')
插入语句: insert into info values ('192.168.2.1','router','89 hours','Cisco','Router3')
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='+00:00' */;
/*!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='NO_AUTO_VALUE_ON_ZERO' */;
/*!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 ('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');
/*!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 
 
'''
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
'''
 
def buildNewsXmlFile(data):
 
 
 root = ET.Element('sys_info')#创建sys_info根元素
 # print help(ET)
 info = ET.SubElement(root, "info",attrib={'ip':'%s'%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={'ip':'%s'%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={'ip':'%s'%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 'write into sys.xml...'
 tree = ET.ElementTree(root)
 tree.write("sys.xml")
 
 
def xml_parser():
 data = {}
 data_list = []
 tree = ET.parse('21.xml')
 root = tree.getroot()# 获取根元素
 for info in root.findall('info'): #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 ['ip']= info.attrib['ip']
   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('localhost','root','root','sys_info2',charset='utf8')
 cursor = conn.cursor()
 cursor.execute('select * from info');
 result = cursor.fetchall()
 if not result:
  print 'please insert the database first'
  sys.exit()
 
 
 x = PrettyTable(['IP地址','sysDescr.0','sysUpTime.0','sysContact','sysName.0'])
 for i in result:
  x.add_row(i)
 print x
 
 # print result
 return result
 
def set_Mysql(data):
 conn = MySQLdb.connect('localhost','root','root','sys_info2',charset='utf8')
 cursor = conn.cursor()
 for i in data:
  # print tuple(i)
  sysName,ip,sysUpTime,sysDescr,sysContact = tuple(i)
  sql = "insert into info values ('%s','%s','%s','%s','%s')"%(ip,sysDescr,sysUpTime,sysContact,sysName)
  print '插入语句:',sql
  try:
   cursor.execute(sql)
  except:
   print 'please clear the database'
   sys.exit()
 print 'insert success!!!'
 conn.commit()
 conn.close()
 
 
def clear_Mysql():
 conn = MySQLdb.connect('localhost','root','root','sys_info2',charset='utf8')
 cursor = conn.cursor()
 cursor.execute('delete from info')
 conn.commit()
 conn.close()
 
 
def main():
 parser = argparse.ArgumentParser()
 parser.add_argument('status',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 'usage %s [0|1|2]'%sys.argv[0]
 
if __name__ == '__main__':
 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

以上就是这文章的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如有疑问大家可以留言交流,谢谢大家对三水点靠木的支持。

Python 相关文章推荐
python实现百度关键词排名查询
Mar 30 Python
python使用xlrd与xlwt对excel的读写和格式设定
Jan 21 Python
Python基于Pymssql模块实现连接SQL Server数据库的方法详解
Jul 20 Python
Python测试人员需要掌握的知识
Feb 08 Python
Python装饰器用法示例小结
Feb 11 Python
Python利用sqlacodegen自动生成ORM实体类示例
Jun 04 Python
Python中判断子串存在的性能比较及分析总结
Jun 23 Python
Python+selenium点击网页上指定坐标的实例
Jul 05 Python
Django对models里的objects的使用详解
Aug 17 Python
Django重设Admin密码过程解析
Feb 10 Python
python 中的[:-1]和[::-1]的具体使用
Feb 13 Python
Python 实现 T00ls 自动签到脚本代码(邮件+钉钉通知)
Jul 06 Python
用python写个自动SSH登录远程服务器的小工具(实例)
Jun 17 #Python
python中Pycharm 输出中文或打印中文乱码现象的解决办法
Jun 16 #Python
Python生成随机密码的方法
Jun 16 #Python
Python操作SQLite数据库的方法详解
Jun 16 #Python
使用python实现个性化词云的方法
Jun 16 #Python
linux环境下python中MySQLdb模块的安装方法
Jun 16 #Python
Django中利用filter与simple_tag为前端自定义函数的实现方法
Jun 15 #Python
You might like
PHP 多维数组排序(usort,uasort)
2010/06/30 PHP
ThinkPHP的模版中调用session数据的方法
2014/07/01 PHP
php数组转成json格式的方法
2015/03/09 PHP
php冒泡排序与快速排序实例详解
2015/12/07 PHP
php mysql 封装类实例代码
2016/09/18 PHP
PHP实现批量清空删除指定文件夹所有内容的方法
2017/05/30 PHP
PHP代码重构方法漫谈
2018/04/17 PHP
调用js时ie6和ie7,ff的区别
2009/08/19 Javascript
jquery键盘事件使用介绍
2011/11/01 Javascript
js解析xml字符串和xml文档实现原理及代码(针对ie与火狐)
2013/02/02 Javascript
jQuery中delegate与on的用法与区别示例介绍
2013/12/20 Javascript
javascript跨域的4种方法和原理详解
2014/04/08 Javascript
javascript实现图片左右滚动效果【可自动滚动,有左右按钮】
2016/09/19 Javascript
input file上传 图片预览功能实例代码
2016/10/25 Javascript
node.js使用redis储存session的方法
2018/09/26 Javascript
javascript的this关键字详解
2019/05/20 Javascript
微信公众号中的JSSDK接入及invalid signature等常见错误问题分析(全面解析)
2020/04/11 Javascript
解决Antd Table表头加Icon和气泡提示的坑
2020/11/17 Javascript
python使用7z解压apk包的方法
2015/04/18 Python
Python多线程下载文件的方法
2015/07/10 Python
python操作redis方法总结
2018/06/06 Python
python Pexpect 实现输密码 scp 拷贝的方法
2019/01/03 Python
Python图像处理库PIL的ImageGrab模块介绍详解
2020/02/26 Python
Python3如何判断三角形的类型
2020/04/12 Python
Jupyter Notebook的连接密码 token查询方式
2020/04/21 Python
html5 利用canvas手写签名并保存的实现方法
2018/07/12 HTML / CSS
中国综合性网上购物商城:当当(网上卖书起家)
2016/11/16 全球购物
迪卡侬英国官网:Decathlon英国
2017/04/08 全球购物
2014学习优秀共产党员先进事迹材料思想汇报
2014/09/14 职场文书
现实表现证明材料
2015/06/19 职场文书
导游词之大雁塔景区
2019/09/17 职场文书
再见,2019我们不负使命;你好,2020我们砥砺前行
2020/01/03 职场文书
MySQL 全文索引使用指南
2021/05/25 MySQL
JavaScript实现简单拖拽效果
2021/09/15 Javascript
深入理解Pytorch微调torchvision模型
2021/11/11 Python
MySQL主从切换的超详细步骤
2022/06/28 MySQL