将库元素添加到现有的xml文件中

Question

Xml文件是：

    <?xml version="1.0"?>
<sdk:sdk-addon
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:sdk="http://schemas.android.com/sdk/android/addon/7">
    <sdk:add-on>
        <sdk:vendor-id>vendor1</sdk:vendor-id>
        <sdk:vendor-display>vendor1</sdk:vendor-display>
        <sdk:name-id>vendor1_apis</sdk:name-id>
        <sdk:name-display>vendor1 Z2 SDK Add-On</sdk:name-display>
        <sdk:description>SDK Add-On for the Z2 Platform</sdk:description>
        <sdk:api-level>30</sdk:api-level>
        <sdk:revision>1</sdk:revision>
        <sdk:libs>
        </sdk:libs>
        <sdk:archives>
            <sdk:archive>
                <sdk:size>84287</sdk:size>
                <sdk:checksum type='sha1'>7825e75aa697841fe0fe5b9438ca44792c1786d0</sdk:checksum>
                <sdk:url>z2_sdk_addon-eng.jenkins-linux-x86.zip</sdk:url>
        <sdk:host-os>linux</sdk:host-os>
            </sdk:archive>
        </sdk:archives>
    </sdk:add-on>
</sdk:sdk-addon>

库文件是：

library1
library2

产出应是：

    <?xml version="1.0"?>
<sdk:sdk-addon
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:sdk="http://schemas.android.com/sdk/android/addon/7">
    <sdk:add-on>
        <sdk:vendor-id>vendor1</sdk:vendor-id>
        <sdk:vendor-display>vendor1</sdk:vendor-display>
        <sdk:name-id>vendor1_apis</sdk:name-id>
        <sdk:name-display>vendor1 Z2 SDK Add-On</sdk:name-display>
        <sdk:description>SDK Add-On for the Z2 Platform</sdk:description>
        <sdk:api-level>30</sdk:api-level>
        <sdk:revision>1</sdk:revision>
        <sdk:libs>
          <sdk:lib>
           <sdk:name>libray1</sdk:name>
          </sdk:lib>
              <sdk:lib>
           <sdk:name>libray2</sdk:name>
          </sdk:lib>
        </sdk:libs>
        <sdk:archives>
            <sdk:archive>
                <sdk:size>84287</sdk:size>
                <sdk:checksum type='sha1'>7825e75aa697841fe0fe5b9438ca44792c1786d0</sdk:checksum>
                <sdk:url>z2_sdk_addon-eng.jenkins-linux-x86.zip</sdk:url>
        <sdk:host-os>linux</sdk:host-os>
            </sdk:archive>
        </sdk:archives>
    </sdk:add-on>
</sdk:sdk-addon>

我创建了一个shell脚本来创建文本

 <sdk:lib>
   <sdk:name>libray1</sdk:name>
  </sdk:lib>
      <sdk:lib>
   <sdk:name>libray2</sdk:name>
  </sdk:lib>

并尝试使用python代码直接添加结果文本。

from lxml import etree
root = etree.parse('my.xml').getroot()
#print(root)
#print(etree.tostring(root))
libraries = root.find(".//{http://schemas.android.com/sdk/android/addon/7}libs")

print(libraries)



with open('libraries_to_be_added_xml') as libraries_to_be_added_file:
    text=libraries_to_be_added_file.read()
    libraries.text=str(text)

tree = etree.ElementTree(root)
tree.write("my.xml", encoding="UTF-8", xml_declaration=True, standalone=True)

我得到的输出有>sdk:lib<而不是<sdk:lib>

我得到的输出

    <?xml version="1.0"?>
<sdk:sdk-addon
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:sdk="http://schemas.android.com/sdk/android/addon/7">
    <sdk:add-on>
        <sdk:vendor-id>vendor1</sdk:vendor-id>
        <sdk:vendor-display>vendor1</sdk:vendor-display>
        <sdk:name-id>vendor1_apis</sdk:name-id>
        <sdk:name-display>vendor1 Z2 SDK Add-On</sdk:name-display>
        <sdk:description>SDK Add-On for the Z2 Platform</sdk:description>
        <sdk:api-level>30</sdk:api-level>
        <sdk:revision>1</sdk:revision>
        <sdk:libs>
          &gt;sdk:lib&lt;
           &gt;sdk:name&lt;libray1&gt;/sdk:name&lt;
          &gt;/sdk:lib&lt;
              &gt;sdk:lib&lt;
           &gt;sdk:name&lt;libray2&gt;/sdk:name&lt;
          &gt;/sdk:lib&lt;
        </sdk:libs>
        <sdk:archives>
            <sdk:archive>
                <sdk:size>84287</sdk:size>
                <sdk:checksum type='sha1'>7825e75aa697841fe0fe5b9438ca44792c1786d0</sdk:checksum>
                <sdk:url>z2_sdk_addon-eng.jenkins-linux-x86.zip</sdk:url>
        <sdk:host-os>linux</sdk:host-os>
            </sdk:archive>
        </sdk:archives>
    </sdk:add-on>
</sdk:sdk-addon>

Answer 1

您正在向xml节点<sdk:libs>添加文本。这就是为什么文本会被转义，所以它不会破坏xml文档。

在ElementTree的情况下，您需要使用xml元素：

# Create a lib element with a subelement
sdk_lib = ET.Element('{http://schemas.android.com/sdk/android/addon/7}lib')
sdk_name = ET.SubElement(sdk_lib, '{http://schemas.android.com/sdk/android/addon/7}name')
sdk_name.text = 'Library 1'

# Adds the sdk_lib element to your <sdk:libs> element
libraries.append(sdk_lib)

相关文件：https://docs.python.org/3/library/xml.etree.elementtree.html