使用 XMLDocument VB.NET 构建 SOAP 消息 [英] Building SOAP message with XMLDocument VB.NET
问题描述
我在 VB.NET 中使用 XMLDocument 构建格式正确的 SOAP 消息时遇到了一些问题(不过 C# 答案很好).
I am having some problems building a properly formatted SOAP message using XMLDocument in VB.NET(C# answers are fine though).
我正在使用以下代码手动创建我的 SOAP 消息，发生的事情是 soap:Header 和 soap:Body 的命名空间前缀 在输出 XML 中被剥离:
I am using the following code to manually create my SOAP message, what is happening is that the namespace prefix of the soap:Header and soap:Body are being stripped in the output XML:
Dim soapEnvelope As XmlElement = _xmlRequest.CreateElement("soap", "Envelope", "http://schemas.xmlsoap.org/soap/envelope/")
soapEnvelope.SetAttribute("xmlns:xsd", "http://www.w3.org/2001/XMLSchema")
soapEnvelope.SetAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance")
_xmlRequest.AppendChild(soapEnvelope)
Dim soapHeader As XmlElement = _xmlRequest.CreateElement("soap", "Header", String.Empty)
_xmlRequest.DocumentElement.AppendChild(soapHeader)
Dim soapBody As XmlElement = _xmlRequest.CreateElement("soap", "Body", String.Empty)
_xmlRequest.DocumentElement.AppendChild(soapBody)
结果如下:
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Header>
...
</Header>
<Body>
....
</Body>
</soap:Envelope>
我需要的是:
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soap:Header>
...
</soap:Header>
<soap:Body>
....
</soap:Body>
</soap:Envelope>
注意:我感谢所有的输入，但不管任何关于 SOAP 应该如何工作或在接收端被解析或类似的东西，底线是我需要按照所描述的那样生成 XML.提前致谢！
NOTE: I appreciate all input, but regardless of any references to how SOAP should work or be parsed on the receiving side or anything like that, the bottom line is I need to generate the XML as described for. Thanks in advance!
解决方案:非常类似于 Quartmeister 答案是我解决这个问题的方式.问题实际上与命名空间有关.不过，我并没有每次都使用字符串值，而是使用了以下解决方案，使用了 DocumentElement 的 NamespaceURI:
SOLUTION: Very similar to Quartmeister answer was the way I resolved this. The issue was in fact in relation to namespace. Rather than use the string value every time though, I used the following solution using the NamespaceURI of the DocumentElement:
Dim soapHeader As XmlElement = _xmlRequest.CreateElement("soap", "Header", _xmlRequest.DocumentElement.NamespaceURI)
Dim soapBody As XmlElement = _xmlRequest.CreateElement("soap", "Body", _xmlRequest.DocumentElement.NamespaceURI)
推荐答案
需要将Header和Body元素上的XML命名空间设置为soap命名空间:
You need to set the XML namespace on the Header and Body elements to the soap namespace:
Dim soapHeader As XmlElement = _xmlRequest.CreateElement("soap", "Header", "http://schemas.xmlsoap.org/soap/envelope/")
Dim soapBody As XmlElement = _xmlRequest.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/")
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