【python】处理xml文件——dom

            #
            coding=utf-8
            #
            通过minidom解析xml文件
            import
             xml.dom.minidom as xmldom

            import
             os

            ‘‘‘
             
XML文件读取 
<?xml version="1.0" encoding="utf-8"?>
<catalog>
    <maxid>4</maxid>
    <login username="pytest" passwd=‘123456‘>dasdas
        <caption>Python</caption>
        <item id="4">
            <caption>测试</caption>
        </item>
    </login>
    <item id="2">
        <caption>Zope</caption>
    </item>
</catalog>


            ‘‘‘
            

xmlfilepath = os.path.abspath("test.xml")
print ("xml文件路径：", xmlfilepath)

# 得到文档对象
domobj = xmldom.parse(xmlfilepath)
print("xmldom.parse:", type(domobj))
# 得到元素对象
elementobj = domobj.documentElement
print ("domobj.documentElement:", type(elementobj))

#获得子标签
subElementObj = elementobj.getElementsByTagName("login")
print ("getElementsByTagName:", type(subElementObj))

print (len(subElementObj))
# 获得标签属性值print (subElementObj[0].getAttribute("username"))
print (subElementObj[0].getAttribute("passwd"))

#区分相同标签名的标签
subElementObj1 = elementobj.getElementsByTagName("caption")
for i in range(len(subElementObj1)):
    print ("subElementObj1[i]:", type(subElementObj1[i]))
    print (subElementObj1[i].firstChild.data)  #显示标签对之间的数据

            #
            coding=utf-8
            #
            通过minidom解析xml文件
            import
             xml.dom.minidom as xmldom

            import
             os


            ‘‘‘
             
XML文件读取 
<?xml version="1.0" encoding="utf-8"?>
<catalog>
    <maxid>4</maxid>
    <login username="pytest" passwd=‘123456‘>dasdas
        <caption>Python</caption>
        <item id="4">
            <caption>测试</caption>
        </item>
    </login>
    <item id="2">
        <caption>Zope</caption>
    </item>
</catalog>


            ‘‘‘
            

xmlfilepath = os.path.abspath("test_g2.xml")
print"xml文件路径：", xmlfilepath

# 得到文档对象
domobj = xmldom.parse(xmlfilepath)
print"xmldom.parse:", type(domobj)
print"xmldom.parse:", domobj.__class__# 得到元素对象
elementobj = domobj.documentElement
print"domobj.documentElement:", type(elementobj)
print"domobj.documentElement:", elementobj.__class__#获得子标签
subElementObj = elementobj.getElementsByTagName("login")
print"getElementsByTagName:", type(subElementObj)

print len(subElementObj)
# 获得标签属性值print subElementObj[0].getAttribute("username")
print subElementObj[0].getAttribute("passwd")

#区分相同标签名的标签
subElementObj1 = elementobj.getElementsByTagName("caption")
for i in range(len(subElementObj1)):
    print"subElementObj1[i]:", type(subElementObj1[i])
    print subElementObj1[i].firstChild.data  #显示标签对之间的数据