Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.ByteArrayInputStream;
import java.io.InputStream;

import java.nio.charset.StandardCharsets;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.log4j.Logger;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

import org.w3c.dom.traversal.DocumentTraversal;
import org.w3c.dom.traversal.NodeFilter;
import org.w3c.dom.traversal.NodeIterator;

public class Main {
    private static Logger logger = Logger.getLogger(new Exception().getStackTrace()[0].getClassName());

    public static void printNodesAndAttributes(String xmlStr) {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {
            logger.info("Xml processing:");
            DocumentBuilder db = dbf.newDocumentBuilder();
            InputStream inStream = new ByteArrayInputStream(xmlStr.getBytes(StandardCharsets.UTF_8));
            // or InputSource inputSource = new InputSource( new StringReader(
            // xmlStr ) );
            Document doc = db.parse(inStream);
            DocumentTraversal dt = (DocumentTraversal) doc;
            NodeIterator i = dt.createNodeIterator(doc, NodeFilter.SHOW_ELEMENT, null, false);
            Node node = i.nextNode();
            while (node != null) {
                logger.info("Node type: " + node.getNodeType() + " Node name: " + node.getNodeName());
                logger.info("    Attributes: " + attributesStr(node));
                node = i.nextNode();
            }
        } catch (Exception ex) {
            logger.error(ex);
        }
    }

    public static String attributesStr(Node node) {
        if (node == null) {
            return null;
        }
        StringBuffer attributes = new StringBuffer();
        for (int i = 0; i < node.getAttributes().getLength(); i++) {
            attributes.append(node.getAttributes().item(i).getNodeName() + "="
                    + node.getAttributes().item(i).getNodeValue() + ", ");
        }
        if (attributes.length() > 1) {
            attributes.delete(attributes.length() - 2, attributes.length());
        } else {
            attributes.append(node.getNodeName() + " has NO attributes.");
        }
        return attributes.toString();
    }
}