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  • Python sax模块(SAX解析XML)

    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>
    View Code

    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")

       

      至此,转载请注明出处。

     

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  • 原文地址:https://www.cnblogs.com/wcwnina/p/7233386.html
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