python解析xml文件操作实例

      ma  xiaoju  Springs Widgets, Inc.   I think widgets are greate.You should buy lots of them forom  Spirngy Widgts, Inc 

 from xml.dom import minidom, Node import re, textwrap class SampleScanner: """""" def __init__(self, doc): """Constructor""" assert(isinstance(doc, minidom.Document)) for child in doc.childNodes: if child.nodeType == Node.ELEMENT_NODE and \ child.tagName == "book": self.handle_book(child) def handle_book(self, node): for child in node.childNodes: if child.nodeType != Node.ELEMENT_NODE: continue if child.tagName == "title": print "Book titile is:", self.gettext(child.childNodes) if child.tagName == "author": self.handle_author(child) if child.tagName == "chapter": self.handle_chapter(child) def handle_chapter(self, node): number = node.getAttribute("number") print "number:", number title_node = node.getElementsByTagName("title") print "title:", self.gettext(title_node) for child in node.childNodes: if child.nodeType != Node.ELEMENT_NODE: continue if child.tagName == "para": self.handle_chapter_para(child) def handle_chapter_para(self, node): company = "" company = self.gettext(node.getElementsByTagName("company")) print "chapter:para:company", company def handle_author(self, node): for child in node.childNodes: if child.nodeType != Node.ELEMENT_NODE: continue if child.tagName == "name": self.handle_author_name(child) if child.tagName == "affiliation": print "affiliation:", self.gettext(child.childNodes) def handle_author_name(self, node): first = "" last = "" for child in node.childNodes: if child.nodeType != Node.ELEMENT_NODE: continue if child.tagName == "first": first = self.gettext(child.childNodes) if child.tagName == 'last': last = self.gettext(child.childNodes) print "firstname:%s,lastname:%s" % (first, last) def gettext(self, nodelist): retlist = [] for node in nodelist: if node.nodeType == Node.TEXT_NODE: retlist.append(node.wholeText) elif node.hasChildNodes: retlist.append(self.gettext(node.childNodes)) return re.sub('\s+', " ", ''.join(retlist)) if __name__=="__main__": doc = minidom.parse("simple.xml") sample = SampleScanner(doc)