我使用的是Python 3.9。我有一个像这样的嵌套 xml 文档字符串
payload_xml = """
<AllData>
<MyPayload>
...
...
...
</MyPayload>
</AllData>
"""
现在我想创建另一个父 xml 文档字符串，并将此有效负载提取到新创建的 xml 文档中，如下所示
新 XML
<Full_Message prop1="" prop2="">
<Header>
<headerValue1> </headerValue1>
<headerValue2> </headerValue2>
<headerValue3> </headerValue3>
<NestedValues>
<someval1> </someval>
</NestedValues>
</Header>
<Body>
<!--Insert MyPayload xml string here ignoring AllData node-->
</Body>
</Full_Message>
这是我目前所在的位置
from lxml import etree
FullMessage_root = etree.Element("Full_Message")
AllData_root = etree.fromstring(payload_xml)
payload_only = AllData_root[0]
FullMessage_root.append(payload_only)
FullMessage_root.insert(0, etree.Element("Header"))
FullMessage_root.insert(1, etree.Element("Body"))
FullMessage_root.attrib['prop1']='hello world'
这会导致：
<Full_Message prop1="hello world">
<Header/>
<Body/>
<MyPayload>
</MyPayload>
</Full_Message>
如何将
<MyPayload><Body><Header>以下是实现您目标的一种方法。我们从上到下逐层创建新的 XML，并使用
appendimport xml.etree.ElementTree as ET
def create_elements(parent_ele, child_tags, child_vals):
for tag, val in zip(child_tags, child_vals):
ele = ET.Element(tag)
if val:
ele.text = val
parent_ele.append(ele)
payload_xml = '''
<AllData>
<MyPayload>
Foo
</MyPayload>
</AllData>
'''
# Create root
root = ET.Element('Full_Message')
root.set('prop1', 'some prop')
root.set('prop2', 'other prop')
# Add elements to root
create_elements(
root,
['Header', 'Body'],
[None] * 2, # no text value attached to header and body
)
# Add elements to header
create_elements(
root.find('Header'),
['headerValue1', 'headerValue2', 'headerValue3', 'NestedValues'],
['val1', 'val2', 'val3', None], # note that no text value attached to NestedValues
)
# Add elements to NestedValues
create_elements(
root.find('Header').find('NestedValues'),
['someval1', 'someval2', 'someval3'],
['nested val1', 'nested val2', 'nested val3'],
)
# Insert payload
AllData_root = ET.ElementTree(ET.fromstring(payload_xml)).getroot()
root.find('Body').append(AllData_root)
# print the new XML
ET.indent(root)
print(ET.tostring(root, encoding='unicode'))
输出将是
<Full_Message prop1="some prop" prop2="other prop">
<Header>
<headerValue1>val1</headerValue1>
<headerValue2>val2</headerValue2>
<headerValue3>val3</headerValue3>
<NestedValues>
<someval1>nested val1</someval1>
<someval2>nested val2</someval2>
<someval3>nested val3</someval3>
</NestedValues>
</Header>
<Body>
<AllData>
<MyPayload>
Foo
</MyPayload>
</AllData>
</Body>
</Full_Message>