I have XML file like this:
<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents- xmlns:xades="http://uri.etsi.org/01903/v1.3.2#" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2 UBL-Invoice-2.1.xsd">
<cac:AccountingSupplierParty>
<cac:Party>
<cac:PartyIdentification>
<cbc:ID schemeID="schema1">123231123</cbc:ID>
</cac:PartyIdentification>
<cac:PartyIdentification>
<cbc:ID schemeID="schema2">2323232323</cbc:ID>
</cac:PartyIdentification>
<cac:PartyIdentification>
<cbc:ID schemeID="schema3">4442424</cbc:ID>
</cac:PartyIdentification>
<cac:PostalAddress>
<cbc:CityName>İstanbul</cbc:CityName>
<cac:Country>
<cbc:Name>Turkey</cbc:Name>
</cac:Country>
</cac:PostalAddress>
</cac:Party>
</cac:AccountingSupplierParty>
</Invoice>
I want to access schemeID="schema=2" value. I try XPath and document.getElementsByTagName. I can access elements with document.getElementsByTagName, since is multiple I can't access the element I want. When I try to with XPath, I can't access any elements from XML.
Here is my XPath implementation:
try {
String decoded = new
String(DatatypeConverter.parseBase64Binary(binaryXmlData));
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource(new StringReader(decoded));
Document doc = db.parse(is);
String expression = "/Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyIdentification/cbc:ID@[schemaID='schema2']/text()";
String schema2 = (String) xPath.compile(expression).evaluate(doc, XPathConstants.STRING);
System.out.println(schema2);
//schema2 is null
//Above this code block returns correct value
NodeList nl = doc.getElementsByTagName("cbc:CityName");
System.out.println(nl.item(0).getTextContent());
} catch () {
}
binaryXmlData is source of my XML. First, I convert base64binary data to xml. Am I doing to convertion wrong or my xpath implementation is wrong ?
