How to set wsdl inner schema to Jaxb2Marshaller to validate each post i wold make?

Question

I\'m consuming a SOAP webservice where I have to validate every xml post before call it.

So I\'m using:

• The cxf-codegen-plugin to generate

Answer 1

finally I found an implementation that works for me.

The idea is:

• to extract the embedded schema's from the wsdl,
• configure each schema namespace,
• adding all posible namespaces non defined yet in it but that are defined on tag,
• configure each schema import and locations,
• store each schema into an implementing class of spring's Resource interface,
• store all of them into an Resource array
• and pass this array to the Jaxb2Marshaller through setSchema[s], instead of setSchema (as I have been doing).

Based on the question, I had to modify the XxxxMarshallerProperties class and the applicationContext-xxxx-base.xml files, only.

XxxxMarshallerProperties:

@Component
public class XxxxMarshallerProperties {
    @Autowired
    private ResourceLoader resourceLoader;

    /**
     * @return A new transformer.
     * @throws TransformerFactoryConfigurationError
     * @throws TransformerConfigurationException
     */
    private Transformer newTransformer()
        throws TransformerFactoryConfigurationError, TransformerConfigurationException {
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        return transformer;
    }

    /**
     * Load the wsdl into a dom Document. Used at:

     *     getSchemas
     *
     * @param wsdlUrl
     *            url where the WSDL is located at
     * @param transformer
     *            used to load the document
     * @return The wsdl dom Document
     * @throws ParserConfigurationException
     * @throws IOException
     * @throws TransformerException
     */
    private Document loadWsdlDoc(URL wsdlUrl, Transformer transformer)
        throws ParserConfigurationException, IOException, TransformerException {
        DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder schemaBuilder = docFactory.newDocumentBuilder();
        Document wsdlDoc = schemaBuilder.newDocument();
        BufferedReader wsdlReader = new BufferedReader(new InputStreamReader(wsdlUrl.openStream()));
        Source source = new StreamSource(wsdlReader);
        transformer.transform(source, new DOMResult(wsdlDoc));
        return wsdlDoc;
    }

    /**
     * Store into a map all namespaces defined on the wsdl. Used at:

     *     getSchemas
     *
     * @param defNode
     *            <wsdl:definitions> dom node where to look
     *            up.
     * @return A map of namespace definition attributes. Format: [(nodeName,
     *         node)....]
     */
    private Map getWsdlDefinedNamespaces(Element defNode) {
        Map namespaces = new TreeMap<>();
        NamedNodeMap defNodeAtt = defNode.getAttributes();
        int defNodeAttSz = defNodeAtt.getLength();
        for (int attIndex = 0; attIndex < defNodeAttSz; attIndex++) {
            String ns = defNodeAtt.item(attIndex).getPrefix();
            if ("xmlns".equals(ns)) {
                namespaces.put(//
                    defNodeAtt.item(attIndex).getNodeName(), //
                    defNodeAtt.item(attIndex));
            }
        }

        return namespaces;
    }

    /**
     * Store into a map all the atributes present in a xsd schema node. Used at:
     * 

     *     addDefinitionNamespaces
     *
     * @param wsdlSchemaNode
     *            <s:schema> dom node where to look up.
     * @return A map of attributes. Format: [(nodeName, node)....]
     */
    private Map getCurrentSchemaAtt(Node wsdlSchemaNode) {
        Map schemaXmlnss = new HashMap<>();

        NamedNodeMap schemaNodeAtt = wsdlSchemaNode.getAttributes();
        int schemaNodeAttSz = schemaNodeAtt.getLength();
        for (int attIndex = 0; attIndex < schemaNodeAttSz; attIndex++) {
            String nodeAttName = schemaNodeAtt.item(attIndex).getNodeName();
            Node nodeAtt = ((NamedNodeMap) schemaNodeAtt).item(attIndex);
            schemaXmlnss.put(nodeAttName, nodeAtt);
        }
        return schemaXmlnss;
    }

    /**
     * Adds all non existing namespace definition attributes to a schema node in
     * that schema node. If a namespace definition attribute name is found into
     * schema node, it's not added to the current schema node attributes. Used
     * at: 

     *     getSchemas
     *
     * @param schemaNode
     *            <s:schema> dom node where to add the
     *            namespace definition attributes.
     * @param namespaces
     *            map storing all namespace definition attributes.
     */
    private void addDefinitionNamespaces(Node schemaNode, Map namespaces) {
        Map currSchemaAttMap = getCurrentSchemaAtt(schemaNode);
        for (Node xmlns : namespaces.values()) {
            String nodeName = xmlns.getNodeName();
            if (!currSchemaAttMap.containsKey(nodeName)) {
                String namespaceURI = xmlns.getNamespaceURI();
                String nodeValue = xmlns.getNodeValue();
                ((Element) schemaNode).setAttributeNS(namespaceURI, nodeName, nodeValue);
            }
        }
    }

    /**
     * Update schema location by adding path. Used at: 

     *     getSchemas
     *
     * @param schemaNode
     *            <s:schema> dom node to update its
     *            location.
     * @return The updated schema.
     */
    private DOMSource updateSchemaLocationByAddingPath(Node schemaNode) {
        DOMSource schemaDomSource = new DOMSource(schemaNode);
        NodeList noteList = schemaDomSource.getNode().getChildNodes();
        for (int j = 0; j < noteList.getLength(); j++) {
            if ("xsd:import".equals(noteList.item(j).getNodeName())) {
                NamedNodeMap nodeMap = noteList.item(j).getAttributes();
                for (int attIndex = 0; attIndex < nodeMap.getLength(); attIndex++) {
                    if ("schemaLocation".equals(nodeMap.item(attIndex).getNodeName())) {
                        nodeMap.item(attIndex).setNodeValue(nodeMap.item(attIndex).getNodeValue());
                    }
                }
            }
        }
        return schemaDomSource;
    }

    /**
     * Transform a DOMSource schema into a spring's {@link Resource} to be
     * attached to a {@link Jaxb2Marshaller}.
     *
     * @param schemaDomSource
     *            The schema to be transformed.
     * @param transformer
     *            The transformer used.
     * @return A spring's {@link Resource} interface.
     * @throws TransformerException
     */
    private Resource transformToResource(DOMSource schemaDomSource, Transformer transformer)
        throws TransformerException {
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        Result result = new StreamResult(outStream);
        transformer.transform(schemaDomSource, result);
        ByteArrayResource schemaResource = new ByteArrayResource(outStream.toByteArray());
        return schemaResource;
    }

    /**
     * Generate and retrieves all schemas contained into a wsdl file stored in
     * the classpath, in an {@link Resource} array, to be attached to a
     * {@link Jaxb2Marshaller} .
     *
     * @return An {@link Resource} array.
     * @throws IOException
     * @throws SAXException
     * @throws ParserConfigurationException
     * @throws TransformerException
     */
    public Resource[] getSchemas()
        throws IOException, SAXException, ParserConfigurationException, TransformerException {
        Resource[] schemaResources = null;

        WebServiceClient wscAnnotation = Service.class.getAnnotation(WebServiceClient.class);
        String wsdlLocationPath = wscAnnotation.wsdlLocation();
        Resource wsdlResource = resourceLoader.getResource(wsdlLocationPath);
        URL wsdlUri = wsdlResource.getURL();

        Transformer transformer = newTransformer();
        Document wsdlDoc = loadWsdlDoc(wsdlUri, transformer);
        NodeList schemaNodes = wsdlDoc.getElementsByTagNameNS(XMLConstants.W3C_XML_SCHEMA_NS_URI, "schema");
        int nrSchemas = schemaNodes.getLength();
        if (nrSchemas > 0) {
            Element defNode = wsdlDoc.getDocumentElement();
            Map namespaces = getWsdlDefinedNamespaces(defNode);

            schemaResources = new Resource[nrSchemas];

            for (int i = 0; i < nrSchemas; i++) {
                Node schemaNode = schemaNodes.item(i);
                addDefinitionNamespaces(schemaNode, namespaces);
                DOMSource schemaDomSource = updateSchemaLocationByAddingPath(schemaNode);
                schemaResources[i] = transformToResource(schemaDomSource, transformer);
            }
        }

        return schemaResources;
    }
}

applicationContext-xxxx-base.xml:

Note that I'm using the Jaxb2Marshaller schemas, property (setSchemas), that allow me to set several schemas, instead of only one.