使用 SUDS 时添加 xsi:type 和信封命名空间 [英] Adding xsi:type and envelope namespace when using SUDS

问题描述

我需要与 SOAP 服务进行交互，但在这样做时遇到了很多麻烦；真的很感激这方面的任何指示.原来的错误信息是:

I need to interact with a SOAP service and am having a lot of trouble doing so; would really appreciate any pointers on this. The original error message was:

org.apache.axis2.databinding.ADBException: Any type element type has not been given

经过一番研究，发现这是SUDS和服务器之间的分歧，要如何处理

After some research, it turns out that this is a disagreement between SUDS and the server has to how deal with

type="xsd:anyType"

在相关元素上.

我已经确认使用了 SOAPUI，并根据建议可以通过以下步骤解决问题:

I've confirmed using SOAPUI and after advice that the problem can be fixed by taking these steps:

1. 将 xsi:type="xsd:string" 添加到导致问题的每个元素
2. 将 xmlns:xsd="http://www.w3.org/2001/XMLSchema" 添加到 SOAP 信封

因此，SUDS 目前在何处执行此操作:

So, where SUDS currently does this:

<SOAP-ENV:Envelope ... xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<ns3:Body>
  <ns0:method>
     <parameter>
        <values>
           <table>
              <key>EMAIL_ADDRESS</key>
              <value>[e-mail]</value>
           </table>
        </values>
     </parameter>
  </ns0:method>

它应该产生这个:

<SOAP-ENV:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" ... xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">

  <ns3:Body>
  <ns0:method>
     ...
     <parameter>
        <values>
           <table>
              <key xsi:type="xsd:string">EMAIL_ADDRESS</key>
              <value xsi:type="xsd:string">[e-mail]</value>
           </table>
        </values>
     </parameter>
  </ns0:method>

有没有正确的方法来做到这一点?我已经看到使用 ImportDoctor 或 MessagePlugins 的建议，但还没有真正理解如何达到预期的效果.

Is there a correct way to do this? I've seen suggestions of using ImportDoctor or MessagePlugins, but haven't really grokked how to achieve the desired effect.

推荐答案

我找到的解决方案是使用 MessagePlugin 在发送之前基本上手动修复 XML.我希望有更优雅的东西，但至少这是有效的:

The solution I found was to use a MessagePlugin to essentially manually fix up the XML just before sending. I'd hoped there was something more elegant, but at least this works:

class SoapFixer(MessagePlugin):

    def marshalled(self, context):
        # Alter the envelope so that the xsd namespace is allowed
        context.envelope.nsprefixes['xsd'] = 'http://www.w3.org/2001/XMLSchema'
        # Go through every node in the document and apply the fix function to patch up incompatible XML. 
        context.envelope.walk(self.fix_any_type_string)

    def fix_any_type_string(self, element):
        """Used as a filter function with walk in order to fix errors.
        If the element has a certain name, give it a xsi:type=xsd:string. Note that the nsprefix xsd must also
         be added in to make this work."""
        # Fix elements which have these names
        fix_names = ['elementnametofix', 'anotherelementname']
        if element.name in fix_names:
            element.attributes.append(Attribute('xsi:type', 'xsd:string'))

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