[zz]python expat 解析xml

时间：2010-02-19 来源：huixiangtao

来源： http://bluecrystal.javaeye.com/blog/116915

主题：解析xml文本
        环境： winxp pro + sp2 + python2.5
        备注：请注意，凡是在源代码文件中使用了中文字符，请最好保存为utf-8格式
                     测试用例sample.xml也请用utf-8格式保存
        代码：

python 代码

# parsexml.py
# 本例子参考自python联机文档，做了适当改动和添加
import xml.parsers.expat
# 控制打印缩进
level = 0
# 获取某节点名称及属性值集合
def start_element(name, attrs):
global level
print ' '*level, 'Start element:', name, attrs
level = level + 1
# 获取某节点结束名称
def end_element(name):
global level
level = level - 1
print ' '*level, 'End element:', name
# 获取某节点中间的值
def char_data(data):
if(data == '\n'):
return
if(data.isspace()):
return
global level
print ' '*level, 'Character data:', data
p = xml.parsers.expat.ParserCreate()
p.StartElementHandler = start_element
p.EndElementHandler = end_element
p.CharacterDataHandler = char_data
p.returns_unicode = False
f = file('sample.xml')
p.ParseFile(f)
f.close()

测试用例：
xml 代码：sample.xml

xml version="1.0"?>
<contacts id="bluecrystal">
<item name="keen" fff="ddd">
<telephone type="phone">222222222telephone>
<telephone type="mobile">134567890telephone>
item>
<item name="bcm">
<telephone type="phone">11111111telephone>
<telephone type="mobile">15909878909telephone>
item>
contacts>

测试结果：

Start element: contacts {'id': 'bluecrystal'}
Start element: item {'fff': 'ddd', 'name': 'keen'}
Start element: telephone {'type': 'phone'}
Character data: 222222222
End element: telephone
Start element: telephone {'type': 'mobile'}
Character data: 134567890
End element: telephone
End element: item
Start element: item {'name': 'bcm'}
Start element: telephone {'type': 'phone'}
Character data: 11111111
End element: telephone
Start element: telephone {'type': 'mobile'}
Character data: 15909878909
End element: telephone
End element: item
End element: contacts