Python使用sax模块解析XML文件示例

本文实例讲述了Python使用sax模块解析XML文件。分享给大家供大家参考，具体如下：XML样例：

本文实例讲述了Python使用sax模块解析XML文件。分享给大家供大家参考，具体如下：

XML样例：

<?xml version="1.0"?>
<collection shelf="New Arrivals">
 <movie title="Enemy Behind">
 <type>War, Thriller</type>
 <format>DVD</format>
 <year>2003</year>
 <rating>PG</rating>
 <stars>10</stars>
 <description>Talk about a US-Japan war</description>
 </movie>
 <movie title="Transformers">
 <type>Anime, Science Fiction</type>
 <format>DVD</format>
 <year>1989</year>
 <rating>R</rating>
 <stars>8</stars>
 <description>A schientific fiction</description>
 </movie>
 <movie title="Trigun">
 <type>Anime, Action</type>
 <format>DVD</format>
 <episodes>4</episodes>
 <rating>PG</rating>
 <stars>10</stars>
 <description>Vash the Stampede!</description>
 </movie>
 <movie title="Ishtar">
 <type>Comedy</type>
 <format>VHS</format>
 <rating>PG</rating>
 <stars>2</stars>
 <description>Viewable boredom</description>
 </movie>
</collection>

SAX解析代码展示：

from xml import sax
class MovieHandler(sax.ContentHandler):
 def __init__(self):
 # 初始化数据，并增加一个当前数据
 self.CurrentData = ""
 self.type = ""
 self.format = ""
 self.year = ""
 self.rating = ""
 self.stars = ""
 self.description = ""
 # 文档启动的时候调用
 def startDocument(self):
 print('XML开始解析中...')
 # 元素开始事件处理
 def startElement(self, name, attrs):
 self.CurrentData=name
 if self.CurrentData=='movie':
 print('*********movie*********')
 title=attrs['title']
 print('Title:{0}'.format(title))
 # 内容事件处理
 def characters(self, content):
 if self.CurrentData == "type":
 self.type = content
 elif self.CurrentData == "format":
 self.format = content
 elif self.CurrentData == "year":
 self.year = content
 elif self.CurrentData == "rating":
 self.rating = content
 elif self.CurrentData == "stars":
 self.stars = content
 elif self.CurrentData == "description":
 self.description = content
 # 元素结束事件处理
 def endElement(self, name):
 if self.CurrentData=='type':
 print('Type:{0}'.format(self.type))
 elif self.CurrentData=='format':
 print('Format:{0}'.format(self.format))
 elif self.CurrentData=='year':
 print('Year:{0}'.format(self.year))
 elif self.CurrentData == 'rating':
 print('Rating:{0}'.format(self.rating))
 elif self.CurrentData == 'stars':
 print('Stars:{0}'.format(self.stars))
 elif self.CurrentData == 'description':
 print('Description:{0}'.format(self.description))
 self.CurrentData = ""
 # 文档结束的时候调用
 def endDocument(self):
 print('XML文档解析结束!')
if __name__=='__main__':
 handler=MovieHandler()
 parser = sax.make_parser()
 # parser.setFeature(sax.handler.feature_namespaces, 0)
 parser.setContentHandler(handler)
 parser.parse("sax_test.xml")

PS：这里再为大家提供几款关于xml操作的在线工具供大家参考使用：

在线XML/JSON互相转换工具： http://tools.jb51.net/code/xmljson

在线格式化XML/在线压缩XML： http://tools.jb51.net/code/xmlformat

XML在线压缩/格式化工具： http://tools.jb51.net/code/xml_format_compress

XML代码在线格式化美化工具： http://tools.jb51.net/code/xmlcodeformat