如何在发送请求时强制 JAXB 写入 javax.jws.WebParam 的 xsi:type（CXF 实现）

Question

我在 wsdl 上使用 wsdl2java 生成了类，服务接口如下所示

@WebService(targetNamespace = "http://www.sii.example.it/SWG1", name = "SWG1")
@XmlSeeAlso({it.au.switchgas.swg1.messaggio.ObjectFactory.class, it.au.switchgas.swg1.strutturegenerali.ObjectFactory.class, it.au.switchgas.strutturegas.ObjectFactory.class, it.au.switchgas.swg1.flussi.ObjectFactory.class})
@SOAPBinding(style = SOAPBinding.Style.RPC)
public interface SWG1 {

    @WebMethod(operationName = "SWG1.0050", action = "SWG1.0050")
    @WebResult(name = "MessaggioSII", targetNamespace = "http://www.sii.example.it/SWG1", partName = "MessaggioSII")
    public it.au.switchgas.swg1.messaggio.AmmissibilitaRichiestaMessaggioSIIType swg10050(
        @WebParam(partName = "MessaggioSII", name = "MessaggioSII")
        it.au.switchgas.swg1.messaggio.RichiestaSwitchingMessaggioSIIType messaggioSII
    );
}

生成的请求是这样的

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
        <ns1:SWG1.0050 xmlns:ns1="http://www.sii.example.it/SWG1">
            <MessaggioSII 
                xmlns:ns5="http://www.example.it/schemas/2010/SII_AU/MessaggioSII">
                    <ns5:RichiestaSII xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns5:RichiestaSwitchingRichiestaSIIType">
                    <ns5:AzioneRichiesta>
                        <ns5:Servizio>XYZ</ns5:Servizio>
                        <ns5:Operazione>ABC</ns5:Operazione>
                    </ns5:AzioneRichiesta>
                    <ns5:Erogatore>AXX</ns5:Erogatore>
                    <ns5:Fruitore>UXXXXX</ns5:Fruitore>
                </ns5:RichiestaSII>
                <ns5:DatiSII xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns5:RichiestaSwitchingDatiSIIType">
                </ns5:DatiSII>
            </MessaggioSII>
        </ns1:SWG1.0050>
    </soap:Body>
</soap:Envelope>

服务器（我无法以任何方式修改）拒绝抱怨缺少 MessaggioSII 元素的 xsi:type 的请求，并需要此语法

<MessaggioSII xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns5:RichiestaSwitchingDatiSIIType"
xmlns:ns5="http://www.example.it/schemas/2010/SII_AU/MessaggioSII">

有没有办法强制CXF/JAXB写入xsi:type属性？我已经查看了 cxf documentation 的转换，遗憾的是它不是很清楚。我宁愿不修改生成的类但我对此持开放态度。

Answer 1

作为解决方法，我添加了这个属性

@XmlAttribute(name = "type", namespace = XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI)
private String xsiType = "ns5:RichiestaSwitchingMessaggioSIIType";

它确实有效，但它特别脆弱，因为它依赖于我在构建时知道将生成的命名空间别名。

更好的方法是修改出站拦截器中的 soap 主体，请参阅 How To Modify The Raw XML message of an Outbound CXF Request? 或 howto modify a webservice request using CXF interceptors with org.w3c.dom.Node

顺便说一句，在服务中添加注解@SchemaValidation(type = SchemaValidationType.OUT) 似乎会导致客户端自动添加xsi:type 信息。卧槽

如何在发送请求时强制 JAXB 写入 javax.jws.WebParam 的 xsi:type（CXF 实现）

How to force JAXB to write the xsi:type of a javax.jws.WebParam when sending a request (CXF implementation)

java

soap

jaxb

cxf