DomHelper.java 文件源码

public static String toXml(Document domDoc) throws TransformerException {
    DOMImplementation domImplementation = domDoc.getImplementation();
    if (domImplementation.hasFeature("LS", "3.0") && domImplementation.hasFeature("Core", "2.0")) {
        DOMImplementationLS domImplementationLS = (DOMImplementationLS) domImplementation.getFeature("LS", "3.0");
        LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
        DOMConfiguration domConfiguration = lsSerializer.getDomConfig();
        if (domConfiguration.canSetParameter("xml-declaration", Boolean.TRUE))
            lsSerializer.getDomConfig().setParameter("xml-declaration", Boolean.FALSE);
        if (domConfiguration.canSetParameter("format-pretty-print", Boolean.TRUE)) {
            lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
            LSOutput lsOutput = domImplementationLS.createLSOutput();
            lsOutput.setEncoding("UTF-8");
            StringWriter stringWriter = new StringWriter();
            lsOutput.setCharacterStream(stringWriter);
            lsSerializer.write(domDoc, lsOutput);
            return stringWriter.toString();
        }
    }
    return toXml((Node)domDoc);
}