XmlUtils.java 文件源码

/**
 * Converts the Node/Element instance to XML payload.
 *
 * @param node the node/element instance to convert
 * @return the XML payload representing the node/element
 * @throws AlipayApiException problem converting XML to string
 */
public static String childNodeToString(Node node) throws AlipayApiException {
    String payload = null;

    try {
        Transformer tf = TransformerFactory.newInstance().newTransformer();

        Properties props = tf.getOutputProperties();
        props.setProperty(OutputKeys.OMIT_XML_DECLARATION, LOGIC_YES);
        tf.setOutputProperties(props);

        StringWriter writer = new StringWriter();
        tf.transform(new DOMSource(node), new StreamResult(writer));
        payload = writer.toString();
        payload = payload.replaceAll(REG_INVALID_CHARS, " ");
    } catch (TransformerException e) {
        throw new AlipayApiException("XML_TRANSFORM_ERROR", e);
    }

    return payload;
}