Cannot read childnodes in XML - NEED HELP!

I have an xml file and want to read certain tags and attributes..
This is my file

<?xml version="1.0" encoding="UTF-8"?>
<Comprobante certificado="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" xmlns:cfdi="http://www.sat.gob.mx/cfd/3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="3.0" serie="UNICA" folio="779" fecha="2011-12-05T18:24:42" sello="ofKFKg1/FYM80g0DpoNm50KKs2H5p07kvQNNet75C/8GisFVgwwIvHNTTBNE/Q4eVfDERVAIGuRWoZ7VLMOrEb0MdeM44oHWnZfczH4T9z9LB4tHuMNHE79JjPhpePc7H4iC/kzdcGcCoKCwlhaMtfqr7LQkoACybmIcYamWg9g=" formaDePago="PAGO EN UNA SOLA EXHIBICION" noCertificado="00001000000102160027" condicionesDePago="EFECTOS FISCALES AL PAGO" subTotal="5123.23" total="5942.95" Moneda="USD" tipoDeComprobante="ingreso" xsi:schemaLocation="http://www.sat.gob.mx/cfd/3 http://www.sat.gob.mx/sitio_internet/cfd/3/cfdv3.xsd">
  <Emisor rfc="TIA050408342" nombre="TECNOLOGIAS DE INFORMACION AMERICA S.A. DE C.V.">
    <DomicilioFiscal calle="Montecito" noExterior="38" noInterior="P 32-5" colonia="Napoles" localidad="Distrito Federal" municipio="Distrito Federal" estado="México" pais="Mex." codigoPostal="03810" />
  </Emisor>
  <Receptor rfc="TEX9302097F3" nombre="TIENDAS EXTRA S.A. DE C.V.">
    <Domicilio calle="JAVIER BARROS SIERRA" noExterior="555" noInterior="PISO 2" colonia="ZEDEC ED. PLAZA SANTA FE" municipio="MEXICO" estado="DISTRITO FEDERAL" pais="MEXICO" codigoPostal="01210" />
  </Receptor>
  <Conceptos>
    <Concepto cantidad="1" unidad="Servicio" descripcion="Servicios Administrados, equipamiento central para enlaces VPN voz y datos de oficinas regionales COMEXTRA en: - KIO NETWORKS" valorUnitario="1522.36" importe="1522.36" />
    <Concepto cantidad="13" unidad="Servicio" descripcion="Servicios Administrados, equipamiento remoto para enlaces VPN voz y datos de oficinas regionales COMEXTRA en: - Puebla - Mérida - Aguascalientes - Cancún - Ciudad Juárez - Chihuahua - Tuxtla Gutiérrez - Villahermosa - Hermosillo - CEDIS Tijuana - COMEXTRA Tijuana - Guadalajara - Morelia NO. DE PROVEEDOR 181077 "TECNOLOGIAS DE INFORMACION AMERICA SA DE CV" SOCIEDAD 7502 ORGANIZACIÓN DE COMPRAS 1100" valorUnitario="276.99" importe="3600.87" />
  </Conceptos>
  <Impuestos totalImpuestosTrasladados="819.72">
    <Traslados>
      <Traslado impuesto="IVA" tasa="16.00" importe="819.72" />
    </Traslados>
  </Impuestos>
  <Complemento>
    <tfd:TimbreFiscalDigital version="1.0" UUID="8A2CFD3A-298B-4A6F-BB3C-8CB23604B1EB" FechaTimbrado="2011-12-05T18:24:44" selloCFD="ofKFKg1/FYM80g0DpoNm50KKs2H5p07kvQNNet75C/8GisFVgwwIvHNTTBNE/Q4eVfDERVAIGuRWoZ7VLMOrEb0MdeM44oHWnZfczH4T9z9LB4tHuMNHE79JjPhpePc7H4iC/kzdcGcCoKCwlhaMtfqr7LQkoACybmIcYamWg9g=" noCertificadoSAT="00001000000102629688" selloSAT="NVoNxUVt756vu6SrwURc2lAZMHVVwcEHfPrlXJKYQzXhlQDlU6uvCZRE9poBE7AfmyTDO2I0/FwZ2KbJgmDK1Bn4VVdYnuAbz2lf/tBUST/SNAQcJGsloJkQfEwJwgpk7Lbh0a+TuW/aKUscbwxBoNOMALLRORGEnJNTgf5eTwg=" xsi:schemaLocation="http://www.sat.gob.mx/TimbreFiscalDigital http://www.sat.gob.mx/TimbreFiscalDigital/TimbreFiscalDigital.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tfd="http://www.sat.gob.mx/TimbreFiscalDigital" />
  </Complemento>
</Comprobante>

Basically, what i cant figure out is how to read the attribute <Concepto> and others from inside<Conceptos>

In my codeI am able to get <Conceptos> but just not able to read its childs... This is my code.

Document document = builder.parse(files[w]);
			Node root = document.getDocumentElement();
			Node currentNode = null;
			NodeList nodeList = root.getChildNodes();
			// ROOT

System.out.println("Root Node:" + root.getNodeName());
			if (root.getNodeName().equals("Comprobante")) {
				for (int i = 0; i < nodeList.getLength(); i++) {
					nodeList = document.getElementsByTagName("Comprobante");
					NamedNodeMap child = document.getAttributes();
					if (child != null) {
						System.out.println(child.item(0));
					}
					for (int s = 0; s < nodeList.getLength(); s++) {
						Node fstNode = nodeList.item(s);
						if (fstNode.getNodeType() == Node.ELEMENT_NODE) {
							Element fstElmnt = (Element) fstNode;
							// System.out.println("Folio,Fecha");
							System.out.println(fstElmnt.getAttribute("folio") + "-"
									+ fstElmnt.getAttribute("fecha"));
						}
					}

}
				nodeList = root.getChildNodes();

for (int i = 0; i < nodeList.getLength(); i++) {
					currentNode = nodeList.item(i);
					// System.out.println(currentNode.getAttributes().item(i).getNodeName());
					if (currentNode.getNodeName() == "Conceptos") {
						if (currentNode.getAttributes() != null) {
							NodeList subList = currentNode.getChildNodes();
							System.out.println(subList.item(0).getNodeName());
							System.out.println(subList.item(0).getNodeValue());
						}

}

PLEASE ANY POINTERS WOULD BE GREATLY APPRECIATE IT.

KeepItDown

I would use the org.w3c.dom methods for Element -

use getElementsByTagName( "Conceptos" )

with one of those Elements getElementsByTagName("Concepto")

with a Concepto Element getAttribute("whatever")

Harold's Processing XML with Java book is available free online, just search. It is loaded with practical examples.

Bill

William,
Thanks for the reply... can I get a link, please!

Well, have you tried getting them directly?

Also, from what I can see, your second concepto has some quotes in the descripcion attribute, that should be escaped.

Claudiu

Also, as Paul told you here, don't use == to compare strings. Use the String.equals method.

Claudiu, William;
You have been of great help actually with constructive comments, than you very much! I was able to solve my problem.