Question

我已经从数据库中读取了一些数据，使用xml.etree.ElementTree我可以使用以下代码生成XML：

top = ET.Element("Enquiry")
child = ET.SubElement(top, 'DocumentHeader')

msgid = ET.SubElement(child, 'msgid')
msgid.text = "4444444"

refno = ET.SubElement(child, 'refno')
refno.text = "xxxxxx"

msg_func = ET.SubElement(child, 'msg_func')
msg_func.text = "9"

#...

tree = ET.ElementTree(top)
root = tree.getroot()
data = ET.tostring(root, encoding='utf8', method='xml')
print data

这产生了这个XML：

<Enquiry>
   <DocumentHeader>
         <msgid></msgid>
              <refno>UCR201700043926</refno>
              <msg_func>9</msg_func>
              <sender>TIS</sender>
              <receiver>CPS</receiver>
               <version>1</version>
              </DocumentHeader>
         <DocumentDetails>
                  <ucr_no>xxxxxxx</ucr_no>
                  <token>xxxxxx</token>
        </DocumentDetails>
</Enquiry>

现在我需要将XML封装在SOAP信封中，然后再使用请求将其发布到Web服务。如何让我的XML看起来像这样：

    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="http://webservice.ucr.oga.kesws.crimsonlogic.com/">
       <soapenv:Header/>
       <soapenv:Body>
          <web:ucrValidation>
             <arg0><![CDATA[
                <UCR_Enquiry>
                    <DocumentHeader>
                        <msgid></msgid>
                        <refno>xxxxxx</refno>
                        <msg_func>9</msg_func>
                        <sender>SGI</sender>
                        <receiver>CPS</receiver>
                        <version>1</version>
                    </DocumentHeader>
                    <DocumentDetails>
                        <ucr_no>xxx</ucr_no>
                        <token>xxxxxx</token>
                    </DocumentDetails>
                </UCR_Enquiry>
            ]]></arg0>
          </web:ucrValidation>
       </soapenv:Body>
    </soapenv:Envelope>

Answer 1

Python的标准ElementTree库不支持CDATA部分，因此您需要确保使用lxml。假设您已将<Enquiry>元素保存为字符串，这将为您提供您正在寻找的内容：

from lxml import etree as ET

SOAP_NS = 'http://schemas.xmlsoap.org/soap/envelope/'
WEB_NS = 'http://webservice.ucr.oga.kesws.crimsonlogic.com/'
ns_map = {'soapenv': SOAP_NS, 'web': WEB_NS}

env = ET.Element(ET.QName(SOAP_NS, 'Envelope'), nsmap=ns_map)
head = ET.SubElement(env, ET.QName(SOAP_NS, 'Header'), nsmap=ns_map)
body = ET.SubElement(env, ET.QName(SOAP_NS, 'Body'), nsmap=ns_map)
val = ET.SubElement(body, ET.QName(WEB_NS, 'ucrValidation'), nsmap=ns_map)
arg = ET.SubElement(val, 'arg0')
arg.text = ET.CDATA('Here is where you can put your CDATA text!!!')

# now you have XML!
print(ET.tostring(env, pretty_print=True))

我使用QName函数创建包含名称空间URI的元素名称。传递给Element和SubElement（另一个lxml扩展名）的命名空间映射将该URI映射到用于输出的前缀：

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="http://webservice.ucr.oga.kesws.crimsonlogic.com/">
  <soapenv:Header/>
  <soapenv:Body>
    <web:ucrValidation>
      <arg0><![CDATA[Here is where you can put your CDATA text!!!]]></arg0>
    </web:ucrValidation>
  </soapenv:Body>
</soapenv:Envelope>

Answer 2

我后来设法解决了这个问题。

    data = '''
    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="http://webservice.ucr.oga.kesws.crimsonlogic.com/">
       <soapenv:Header/>
       <soapenv:Body>
          <web:ucrValidation>
             <arg0><![CDATA[
             {0}
            ]]></arg0>
          </web:ucrValidation>
       </soapenv:Body>
    </soapenv:Envelope>'''

我使用了.format(d)函数

我的d是由XML生成的d = ET.tostring(root, encoding='utf8', method='xml') 虽然发布我刚刚打电话 requests.post(url, data=data.format(d), headers=headers, verify=True)

将SOAP Envelope添加到ElementTree生成的XML中

2 个答案: