2020-12-17：python-dom

本文章通过python中dom接口解析xml文件：

##############xml文件格式：

<?xml version="1.0"?>

<one-level attr-one="top-level-first">

    <two-level attr-two="two-level-second-1">

        <three-level attr-three="three-level-third-1">

            <a>aaa-1</a>

            <b>bbb-1</b>

            <c>ccc-1</c>

        </three-level>

    </two-level>

    <two-level attr-two="two-level-second-2">

        <three-level attr-three="three-level-third-2">

            <a>aaa-2</a>

            <b>bbb-2</b>

            <c>ccc-2</c>

        </three-level>

    </two-level>

</one-level>

##############python中dom解析代码：

import xml.dom.minidom

domtree = xml.dom.minidom.parse("movie-1-pro.xml")  # 解析成dom树

collectionall = domtree.documentElement  # 获取树中元素

# 获取树中顶层属性

if collectionall.hasAttribute("attr-one"):

    print(collectionall.getAttribute("attr-one"))

# 获取two-level下面元素内容

twolevel = collectionall.getElementsByTagName("two-level")

for each in twolevel:

    print("***********two-level***********")

    if each.hasAttribute("attr-two"):

        print("-%s" % each.getAttribute("attr-two"))

    # 获取three-level下面元素内容

    threelevel = each.getElementsByTagName("three-level")

    for cycle in threelevel:

        if cycle.hasAttribute("attr-three"):

            print("--%s" % cycle.getAttribute("attr-three"))

        a = cycle.getElementsByTagName("a")[0]

        print("---%s" % a.childNodes[0].data)

        b = cycle.getElementsByTagName("b")[0]

        print("---%s" % b.childNodes[0].data)

        c = cycle.getElementsByTagName("c")[0]

        print("---%s" % c.childNodes[0].data)

##############解析结果：

top-level-first

***********two-level***********

-two-level-second-1

--three-level-third-1

---aaa-1

---bbb-1

---ccc-1

***********two-level***********

-two-level-second-2

--three-level-third-2

---aaa-2

---bbb-2

---ccc-2