TransformationHelper.java 文件源码

/**
 * @param xmlString
 * @return
 * @throws Exception
 */
public static String findFunction(String xmlString) throws Exception {

    DocumentBuilder document = DocumentBuilderFactory.newInstance().newDocumentBuilder();
    Element node = document.parse(new ByteArrayInputStream(xmlString.getBytes())).getDocumentElement();

    //Xpath
    XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xpath.compile("//*[local-name()='Envelope']/*[local-name()='Body']/*");

    Object result = expr.evaluate(node, XPathConstants.NODESET);
    NodeList nodes = (NodeList) result;

    if (log.isDebugEnabled()) {
        log.debug("nodes.item(0).getNodeName():" + nodes.item(0).getNodeName());
    }

    if (nodes.item(0).getNodeName().contains("query")) {
        return "query";
    } else if (nodes.item(0).getNodeName().contains("update")) {
        return "update";
    } else {
        return null;
    }
}