本文實例講述了Python實現對象轉換為xml的方法。分享給大家供大家參考，具體如下：

# -*- coding:UTF-8 -*-'''''Created on 2010-4-20@author: 憂里修斯'''import xml.etree.ElementTree as ETimport xml.dom.minidom as minidomfrom addrbook.domain import Personclass Converter(object):  '''''     實現Python對象與xml之間的相互轉換  '''  root = None#根節點  def __init__(self):    pass  @staticmethod  def createRoot(rootTag):    '''''          創建根節點    '''    root = ET.Element(rootTag)    return root  @staticmethod  def getXmlString(element,defaultEncoding='utf-8'):    '''''          根據節點返回格式化的xml字符串    '''    try:      rough_string = ET.tostring(element, defaultEncoding)      reparsed = minidom.parseString(rough_string)      return reparsed.toprettyxml(indent=" " , encoding=defaultEncoding)    except:      print 'getXmlString:傳入的節點不能正確轉換為xml，請檢查傳入的節點是否正確'      return ''  @staticmethod  def classToElements(classobj,rootTag=None):    '''''          根據傳入的對象的實例，根據對象的屬性生成節點，返回由節點組成的列表    classobj：對象的實例    rootTag：根節點名稱    '''    attrs = None#保存對象的屬性集    elelist = []#節點列表    try:      attrs = classobj.__dict__.keys()#獲取該對象的所有屬性(即成員變量)    except:      print 'classToElements:傳入的對象非法，不能正確獲取對象的屬性'    if attrs != None and len(attrs) > 0:#屬性存在      for attr in attrs:        attrvalue = getattr(classobj, attr)#屬性值        #屬性節點        attrE = ET.Element(attr)        attrE.text = attrvalue        #加入節點列表        elelist.append(attrE)    return elelist  @staticmethod  def classToXML(classobj,rootTag=None):    '''''    Python自定義模型類轉換成xml，轉換成功返回的是xml根節點，否則返回None    classobj：對象的實例    rootTag：根節點名稱    '''    try:      classname = classobj.__class__.__name__ #類名      if rootTag != None:        root = Converter.createRoot(rootTag)      else:        root = Converter.createRoot(classname)      elelist = Converter.classToElements(classobj, rootTag)      for ele in elelist:        root.append(ele)      return root    except:      print 'classToXML:轉換出錯，請檢查的傳入的對象是否正確'      return None  @staticmethod  def collectionToXML(listobj,rootTag='list'):    '''''              集合（列表、元組、字典）轉換為xml，轉換成功返回的是xml根節點，否則返回None    '''    try:      classname = listobj.__class__.__name__ #類名      root = Converter.createRoot(rootTag)      if isinstance(listobj, list) or isinstance(listobj, tuple):#列表或元組        if len(listobj) >= 0:          for obj in listobj:#迭代列表中的對象            itemE = Converter.classToXML(obj)            root.append(itemE)      elif isinstance(listobj, dict):#字典        if len(listobj) >= 0:          for key in listobj:#迭代字典中的對象            obj = listobj[key]            itemE = Converter.classToXML(obj)            itemE.set('key', key)            root.append(itemE)      else:        print 'listToXML：轉換錯誤，傳入的對象：'+classname+'不是集合類型'      return root    except:      print 'collectionToXML：轉換錯誤，集合轉換成xml失敗'      return Noneif __name__ == '__main__':  p1 = Person('dredfsam','男','133665')  p2 = Person('dream','女','r')  p3 = Person('得分','男','sdf')  personList = {}  personList['p1']= p1  personList['p2']= p2  personList['p3']= p3#  personList.append(p1)#  personList.append(p2)#  personList.append(p3)  root = Converter.collectionToXML(personList)  print Converter.getXmlString(root)#  plist = (p1,p2,p3)#{'name':'sdf'}#  print type(plist)#  print type(plist),isinstance(plist, list)