使用DOM方式，遍历XML文件

traversalXML.java

public static void traversalXMLFile(String uri) throws Exception {
    StringBuilder result = new StringBuilder();
    result.append("File: ").append(uri).append("\n");

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();
    Document doc = db.parse(uri);
    Element rootElement = doc.getDocumentElement();

    // check root element
    String rootTagName = rootElement.getTagName();
    String rootNodeName = rootElement.getNodeName();
    result.append("rootTagName: ").append(rootTagName)
            .append("\trootNodeName: ").append(rootNodeName).append("\n");

    // check root child element;
    traversalNode(rootElement, "", result);

    Log.d(TAG, result.toString());
}

private static void traversalNode(Node node, String tapStr, StringBuilder result) {
    int childCount = node.getChildNodes().getLength();
    // self
    result.append(tapStr).append("<")
            .append(node.getNodeName())
            .append("\ttype: ").append(node.getNodeType())
            .append("\tnodeValue: ").append(node.getNodeValue())
            .append("\tchildCount: ").append(childCount)
            .append(">\n");

    // child
    if (childCount > 0) {
        NodeList childList = node.getChildNodes();
        for (int i = 0; i < childList.getLength(); ++i) {
            traversalNode(childList.item(i), tapStr.concat("\t"), result);
        }

        result.append(tapStr).append("<\\").append(node.getNodeName()).append(">\n");
    }

}