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111 lines
2.9 KiB
Java
111 lines
2.9 KiB
Java
Echo document
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package com.ack.xml.dom;
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import com.ack.util.XmlUtil;
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import org.w3c.dom.Document;
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import org.w3c.dom.NamedNodeMap;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import org.xml.sax.InputSource;
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public class EchoDocument {
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private void print( Document doc ) {
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printNode( doc, "" );
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}
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public void printNode( Node n, String indent ) {
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switch( n.getNodeType() ) {
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case Node.DOCUMENT_NODE:
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NodeList children = n.getChildNodes();
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if( children != null ) {
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for( int i = 0; i < children.getLength(); i++ ) {
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printNode( children.item( i ), indent + " " );
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}
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}
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break;
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case Node.ELEMENT_NODE:
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log( indent + getElementStart( n ) );
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getElementChildren( n, indent );
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log( indent + getElementEnd( n ) );
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break;
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case Node.TEXT_NODE:
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String text = getTextNode( n );
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if( text.length() > 0 ) {
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log( indent + " " + text );
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}
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break;
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case Node.PROCESSING_INSTRUCTION_NODE:
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log( indent + getProcessingInstructionNode( n ) );
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break;
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case Node.COMMENT_NODE:
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log( indent + getCommentNode( n ) );
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break;
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}
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}
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private void log( String msg ) {
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System.out.println( "EchoDocument: " + msg );
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}
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private String getElementStart( Node e ) {
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StringBuffer buf = new StringBuffer();
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buf.append( "<" + e.getNodeName() );
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buf.append( getElementAttributes( e ) );
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buf.append( ">" );
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return buf.toString();
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}
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private void getElementChildren( Node e, String indent ) {
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NodeList children = e.getChildNodes();
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if( children != null ) {
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for( int i = 0; i < children.getLength(); i++ )
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printNode( children.item( i ), indent + " " );
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}
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}
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private String getElementEnd( Node e ) {
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return "</" + e.getNodeName() + ">";
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}
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private String getElementAttributes( Node e ) {
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StringBuffer buf = new StringBuffer();
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NamedNodeMap attributes = e.getAttributes();
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for( int i = 0; i < attributes.getLength(); i++ ) {
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Node n = attributes.item( i );
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buf.append( " " );
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buf.append( n.getNodeName() );
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buf.append( "=" );
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buf.append( n.getNodeValue() );
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}
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return buf.toString();
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}
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private String getTextNode( Node t ) {
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return t.getNodeValue().trim();
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}
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private String getProcessingInstructionNode( Node pi ) {
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return "<?" + pi.getNodeName() + " " + pi.getNodeValue() + "?>";
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}
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private String getCommentNode( Node c ) {
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return "comment: " + c.getNodeValue();
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}
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public static void main( String[] args )
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throws Exception {
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// create an input source for target document and parse it
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InputSource is = new InputSource( "resources\\personal.xml" );
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Document d = XmlUtil.getDocument( is );
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new EchoDocument().print( d );
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}
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}
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