阅读目录

• 1. 什么是xml？有何特征？
• 2. 获得标签属性
• 3. 获得子标签
• 4. 获得标签属性值
• 5. 获得标签对之间的数据
• 6. 例子
• 7. 总结

<?xml version="1.0" encoding="utf-8"?>
<catalog> <maxid>4</maxid> <login username="pytest" passwd='123456'> <caption>Python</caption> <item id="4"> <caption>test</caption> </item> </login> <item id="2"> <caption>Zope</caption> </item> </catalog>

#coding: utf-8
import xml.dom.minidom
dom = xml.dom.minidom.parse("del.xml") #打开xml文档  root = dom.documentElement #得到xml文档对象 print "nodeName:", root.nodeName #每一个结点都有它的nodeName，nodeValue，nodeType属性 print "nodeValue:", root.nodeValue #nodeValue是结点的值，只对文本结点有效 print "nodeType:", root.nodeType print "ELEMENT_NODE:", root.ELEMENT_NODE

#coding: utf-8
import xml.dom.minidom
dom = xml.dom.minidom.parse("del.xml") root = dom.documentElement bb = root.getElementsByTagName('maxid') print type(bb) print bb b = bb[0] print b.nodeName print b.nodeValue

#coding: utf-8
import xml.dom.minidom
dom = xml.dom.minidom.parse("del.xml") root = dom.documentElement itemlist = root.getElementsByTagName('login') item = itemlist[0] print item.getAttribute("username") print item.getAttribute("passwd") itemlist = root.getElementsByTagName("item") item = itemlist[0] #通过在itemlist中的位置区分 print item.getAttribute("id") item2 = itemlist[1] #通过在itemlist中的位置区分

print item2.getAttribute("id")

#coding: utf-8
import xml.dom.minidom
dom = xml.dom.minidom.parse("del.xml") root = dom.documentElement itemlist = root.getElementsByTagName('caption') item = itemlist[0] print item.firstChild.data item2 = itemlist[1] print item2.firstChild.data

<?xml version="1.0" encoding="UTF-8" ?>
<users> <user id="1000001"> <username>Admin</username> <email>admin@live.cn</email> <age>23</age> <sex>boy</sex> </user> <user id="1000002"> <username>Admin2</username> <email>admin2@live.cn</email> <age>22</age> <sex>boy</sex> </user> <user id="1000003"> <username>Admin3</username> <email>admin3@live.cn</email> <age>27</age> <sex>boy</sex> </user> <user id="1000004"> <username>Admin4</username> <email>admin4@live.cn</email> <age>25</age> <sex>girl</sex> </user> <user id="1000005"> <username>Admin5</username> <email>admin5@live.cn</email> <age>20</age> <sex>boy</sex> </user> <user id="1000006"> <username>Admin6</username> <email>admin6@live.cn</email> <age>23</age> <sex>girl</sex> </user> </users>

# -*- coding:utf-8 -*-
from xml.dom import minidomdef get_attrvalue(node, attrname): return node.getAttribute(attrname) if node else '' def get_nodevalue(node, index = 0): return node.childNodes[index].nodeValue if node else '' def get_xmlnode(node, name): return node.getElementsByTagName(name) if node else [] def get_xml_data(filename = 'user.xml'): doc = minidom.parse(filename) root = doc.documentElement user_nodes = get_xmlnode(root, 'user') print "user_nodes:", user_nodes user_list=[] for node in user_nodes: user_id = get_attrvalue(node, 'id') node_name = get_xmlnode(node, 'username') node_email = get_xmlnode(node, 'email') node_age = get_xmlnode(node, 'age') node_sex = get_xmlnode(node, 'sex') user_name =get_nodevalue(node_name[0]) user_email = get_nodevalue(node_email[0]) user_age = int(get_nodevalue(node_age[0])) user_sex = get_nodevalue(node_sex[0]) user = {} user['id'] , user['username'] , user['email'] , user['age'] , user['sex'] = ( int(user_id), user_name , user_email , user_age , user_sex ) user_list.append(user) return user_list def test_load_xml(): user_list = get_xml_data() for user in user_list : print '-----------------------------------------------------' if user: user_str='No.:\t%d\nname:\t%s\nsex:\t%s\nage:\t%s\nEmail:\t%s' % (int(user['id']) , user['username'], user['sex'] , user['age'] , user['email']) print user_str if __name__ == "__main__": test_load_xml()