如何在Java中的SOAPBody中添加命名空间

Question

我试图在肥皂主体中命名空间。所以我尝试了以下内容，

代码已尝试

    String nameSpace ="com";
    String namespaceURI ="http://sample.service.com/SampleServiceV1.0";
    SOAPEnvelope envelope = soapPart.getEnvelope();
    SOAPBody soapBody = envelope.getBody();
    SOAPElement soapBodyElem = soapBody.addChildElement(operationName, nameSpace);
    soapBody.addNamespaceDeclaration(nameSpace, namespaceURI);

错误 com.sun.xml.internal.messaging.saaj.SOAPExceptionImpl：无法找到前缀com的名称空间

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