java - 如何从标签中删除 namespace 但保留其前缀？

Question

我能够生成 SOAP 消息，但我不知道

• 只给 soapMessage 标签添加前缀(不应该有命名空间)

   SOAPConnectionFactory soapConnectionFactory =
                  SOAPConnectionFactory.newInstance();
   SOAPConnection connection =
                  soapConnectionFactory.createConnection();
   SOAPFactory soapFactory =
                  SOAPFactory.newInstance();
  
   MessageFactory factory =
                  MessageFactory.newInstance(SOAPConstants.SOAP_1_2_PROTOCOL);
  
   SOAPMessage message = factory.createMessage();
   SOAPHeader header = message.getSOAPHeader();
   SOAPPart soapPart = message.getSOAPPart();
   SOAPEnvelope soapEnvelope = soapPart.getEnvelope();                
   SOAPBody body = soapEnvelope.getBody();
  
   soapEnvelope.removeNamespaceDeclaration(soapEnvelope.getPrefix());
   soapEnvelope.setPrefix("soap");
   body.setPrefix("soap");
  
   header.removeNamespaceDeclaration(header.getPrefix());
   header.setPrefix("soap");
  
   soapEnvelope.addNamespaceDeclaration("v9", "URL TO SERVER");
  
   Name bodyName;
   bodyName = soapFactory.createName("SearchHotels");
   SOAPBodyElement getList = body.addBodyElement(bodyName);
   getList.setPrefix("v9");
  
   Name childName = soapFactory.createName("SoapMessage", "v9", "URL TO SERVER");
   SOAPElement HotelListRequest = getList.addChildElement(childName);
  
   HotelListRequest.addChildElement("Hotel", "v9").addTextNode("Hilton");
  

我的 SOAP 消息

   ...
     <v9:SoapMessage xmlns:els="URL TO SERVER">
         ...

我的期望

   ...
      <v9:SoapMessage>
           ...

更新:

如果我使用以下它会遇到以下错误

    SOAPElement HotelListRequest = getList.addChildElement("v9:SoapMessage");

    org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to create or change an object in a 
                                             way which is incorrect with regard to namespaces.

Answer 1

要将 namespace 前缀添加到所有标签，您必须在每个 插入的子元素上重新声明所需的前缀(最终是 namespace )，否则它将(隐式地)从父元素继承 namespace .

例如尝试:

SOAPBodyElement getList = body.addBodyElement(bodyName, "v9", "http://URL TO SERVER");

或

soapBody.addChildElement("SomeElement", "v9", "http://URL TO SERVER");

或

soapBody.addChildElement("v9:SomeElement");

有时您可能不得不使用 QName 对象，而不仅仅是 String 或 Name。

这在很大程度上取决于您使用的 SOAP-API/实现，但原则在任何地方都是相同的:重新声明(显式)或继承(隐式)。