Python中使用SAX解析xml实例

2019-11-25 18:04:50

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SAX是一种基于事件驱动的API。利用SAX解析XML文档牵涉到两个部分:解析器和事件处理器。解析器负责读取XML文档,并向事件处理器发送事件,如元素开始跟元素结束事件;而事件处理器则负责对事件作出相应,对传递的XML数据进行处理。

实例：

import  sys, string from  xml.sax import  handler, make_parser
 
 class  TestHandler(handler.ContentHandler):                        
         def  __init__(self):                                                                
                 pass
                 
         def  startDocument(self):            
                 print  "Document Start ..."
                
        def  endDocument(self):                 
                print  "Document End ..."
                
        def  startElement(self, name, attrs):
                print  'start tag:', name
                
        def  endElement(self, name):
                print  'end tag:', name     
                
        def  characters(self, chrs):                                                     
                print  chrs
                
     
def  test():     
        handler = TestHandler()     
        parser = make_parser()     
        parser.setContentHandler(handler)
        f = open(sys.argv[1], 'r')     
        parser.parse(f)     
        f.close()
     
if  __name__ == '__main__':
        test()