如何在 Spring Web 服务中为 SOAP 故障元素设置自定义命名空间前缀？

Question

我正在开发一个 Spring Web Services 项目，我需要自定义 SOAP 错误响应。具体来说，我想确保 SOAP 响应中的错误元素使用自定义命名空间前缀 s，而不是默认的。

这是我当前的handleFault 实现：

@Override
public boolean handleFault(MessageContext messageContext, Object endpoint) throws Exception {
    SaajSoapMessage soapResponse = (SaajSoapMessage) messageContext.getResponse();
    SOAPEnvelope envelope = soapResponse.getSaajMessage().getSOAPPart().getEnvelope();
    SOAPBody body = envelope.getBody();
    SOAPHeader header = soapResponse.getSaajMessage().getSOAPHeader();

    // Remove the default "SOAP-ENV" namespace and replace it with "s"
    envelope.removeNamespaceDeclaration("SOAP-ENV");
    envelope.addNamespaceDeclaration("s", "http://schemas.xmlsoap.org/soap/envelope/");
    
    // Set the prefix "s" for the envelope, body, and header
    envelope.setPrefix("s");
    body.setPrefix("s");
    if (header != null) {
        header.setPrefix("s");
    }

    // Create a new SOAPFault or modify the existing one
    SOAPFault fault = body.getFault() != null ? body.getFault() : body.addFault();

    fault.setPrefix("s");
    fault.setFaultCode(new QName("http://schemas.xmlsoap.org/soap/envelope/", "Client", "s"));
    fault.setFaultString("403 Forbidden: Access forbidden. Please check your permissions.");

    // Save the changes to ensure everything is serialized properly
    soapResponse.getSaajMessage().saveChanges();

    return true;
}

此代码生成以下 SOAP 响应：

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header/>
   <s:Body>
      <Fault xmlns="http://schemas.xmlsoap.org/soap/envelope/">
         <faultcode xmlns="">s:Client</faultcode>
         <faultstring xml:lang="en" xmlns="">403 Forbidden: message[403 Forbidden from PUT http://127.0.0.1:8081/vms/display/screenwalls/scrwall_test_error403/mapping] responseBody[{"status":"ERROR","payload":"VMS Error Payload 403 (scrwall_test_error403)  (scrwall_test_error403)"}]</faultstring>
      </Fault>
   </s:Body>
</s:Envelope>

如您所见，尽管调用了fault.setPrefix("s")，但Fault 元素缺少 s 前缀 而不是 ，我希望它像这样 ：

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header/>
   <s:Body>
      <s:Fault>
         <faultcode>s:Client</faultcode>
         <faultstring xml:lang="en">403 Forbidden: message[403 Forbidden]</faultstring>
      </s:Fault>
   </s:Body>
</s:Envelope>

如何确保 SOAP 正文中的Fault 元素使用 s 前缀？

Answer 1

我发现问题了。故障处理程序代码确实是正确的。这是 @Override public void afterCompletion(...) 方法用

覆盖前缀

  node.setPrefix("");

我做了这个改变并且它正在起作用

  // Check if the element is a Fault, and skip modifying the prefix
                if (!"Fault".equals(node.getLocalName())) {
                    node.setPrefix("");