xml解析

dom树解析

from xml.dom.minidom import parse #导入模块
class Book(object):   #创建一个book类
    def __init__(self,name,jiage,zuozhe):
        self.name=name
        self.jiage=jiage
        self.zuozhe=zuozhe
    def __str__(self):
        return "书名："+self.name+" 价格："+self.jiage+" 作者:"+self.zuozhe
doc=parse("aa.xml")#打开文件

books=[]
root=doc.documentElement #获取根节点
book=root.getElementsByTagName("book")#获取根节点下面的book节点
for i in book:
    name = i.getElementsByTagName("name")[0].childNodes[0].data
    jiage = i.getElementsByTagName("jiage")[0].childNodes[0].data
    zuozhe = i.getElementsByTagName("zuozhe")[0].childNodes[0].data
    books.append(Book(name,jiage,zuozhe))
for j in books:
    print(j)

sax解析

from xml.sax import parse#导入模块
import xml.sax
books=[]  #创建一个空数组
class Book(object):
    def __init__(self,name=None,jiage=None,zuozhe=None):
        self.name=name
        self.jiage=jiage
        self.zuozhe=zuozhe
    def __str__(self):
        return "书名："+self.name+" 价格："+self.jiage+" 作者:"+self.zuozhe

class SaxSimple(xml.sax.ContentHandler):
    def __init__(self,book=None,tag=None):
        self.book=book
    def startDocument(self):
        print("start-----doc")
    def startElement(self, name, attrs):
        if name=="book":
            self.book=Book()
        self.tag=name
    def characters(self, content):
        if self.tag=="name":
            self.book.name=content
        elif self.tag=="jiage":
            self.book.jiage=content
        elif self.tag=="zuozhe":
            self.book.zuozhe=content

    def endElement(self, name):
        if name=="book":
            books.append(self.book)
            self.book=None
        self.tag=None
    def endDocument(self):
        print("end---doc")
parse("aa.xml",SaxSimple())
for book in books:
    print(book)

elementtree解析

#  方法    作用
# parse(xml文件)   #加载xml文件
# formstring(xmltext)          #加载xml文件
# findall()           #获取制定的所有节点
# find()            #获取指定的节点
# getchildren()  #获取儿子节点
# getiterator()  #获取指定的所有节点与  findall类似
# 属性：
# 1、attrib：获取节点的属性及属性值（以元组的方式返回）
# 2、tag：获取节点名称
# 3、text：获取节点的文本值
class Book(object):
    def __init__(self,name=None,jiage=None,zuozhe=None):
        self.name=name
        self.jiage=jiage
        self.zuozhe=zuozhe
    def __str__(self):
        return "书名："+self.name+" 价格："+self.jiage+" 作者:"+self.zuozhe
books=[]
try:
    import xml.etree.cElementTree as ET
except ImportError:
    import xml.etree.ElementTree as ET

tree=ET.parse("aa.xml")
book=tree.findall("book")
booka=None
for b in book:
    booka=Book()
    booka.name=b.find("name").text
    booka.jiage = b.find("jiage").text
    booka.zuozhe = b.find("zuozhe").text
    books.append(booka)
for i in books:
    print(i)