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 ?
There are many problems with your code and your XML, including:
Your XML is not well-formed. The closing quote of the cbc
namespace prefix is missing.
Your Java code never defines a NamespaceContext.
See also How does XPath deal with XML namespaces?
Related
I have this xml file:
<?xml version="1.0" encoding="UTF-8"?>
<iet:aw-data xmlns:iet="http://care.aw.com/IET/2007/12" class="com.aw.care.bean.resource.MessageResource">
<iet:metadata filter=""/>
<iet:message-resource>
<iet:message>some message 1</iet:message>
<iet:customer id="1"/>
<iet:code>edi.claimfilingindicator.11</iet:code>
<iet:locale>iw_IL</iet:locale>
</iet:message-resource>
<iet:message-resource>
<iet:message>some message 2</iet:message>
<iet:customer id="1"/>
<iet:code>edi.claimfilingindicator.12</iet:code>
<iet:locale>iw_IL</iet:locale>
</iet:message-resource>
.
.
.
.
</iet:aw-data>
Using this code below i'm getting over the data and finding what I need.
try {
FileInputStream fileIS = new FileInputStream(new File("resources\\bootstrap\\content\\MessageResources_iw_IL\\MessageResource_iw_IL.ctdata.xml"));
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
builderFactory.setNamespaceAware(true); // never forget this!
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document xmlDocument = builder.parse(fileIS);
XPath xPath = XPathFactory.newInstance().newXPath();
String query = "//*[local-name()='message-resource']//*[local-name()='code'][contains(text(), 'account')]";
NodeList nodeList = (NodeList) xPath.compile(query).evaluate(xmlDocument, XPathConstants.NODESET);
System.out.println("size= " + nodeList.getLength());
for (int i = 0; i < nodeList.getLength(); i++) {
System.out.println(nodeList.item(i).getNodeValue());
}
}
catch (Exception e){
e.printStackTrace();
}
The issue is that i'm getting only null values while printing in the for loop, any idea why it's happened?
The code needs to return a list of nodes which have a code and message fields that contains a given parameters (same as like SQL query with two parameters with operator of AND between them)
Check the documentation:
https://docs.oracle.com/javase/7/docs/api/org/w3c/dom/Node.html
getNodeValue() applied to an element node returns null.
Use getTextContent().
Alternatively, if you find DOM too frustrating, switch to one of the better tree models like JDOM2 or XOM.
Also, if you used an XPath 2.0 engine like Saxon, it would (a) simplify your expression to
//*:message-resource//*:code][contains(text(), 'account')]
and (b) allow you to return a sequence of strings from the XPath expression, rather than a sequence of nodes, so you wouldn't have to mess around with nodelists.
Another point: I suspect that the predicate [contains(text(), 'account')] should really be [.='account']. I'm not sure of that, but using text() instead of ".", and using contains() instead of "=", are both common mistakes.
I have a webpage that has a XML document.
The URL is something like www.snfnffn.com/pareste.xml
The XML do I want to parse looks like:
<school>
<rating value="4">"hi"</rating>
.... <!-- more tags here -->
</school>
NOTE: THE rating tag can be nested under any number of tags but it WILL ALWAYS have a value attribute
How can I get the value attribute of the rating tag? I only want the first instance of rating if there are many rating tags in the document.
Note that the XML doc is on a URL.
I tried:
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new URL(url).openStream());
but not sure what to do after this.
Try this:
NodeList layerConfigList = doc.getElementsByTagName("rating");
Node node = layerConfigList.item(0);
Element e = (Element)node;
String value = e.getAttribute("value");
I have an complex xml with nested structure and with namespace .
I am able to read the xml elements but not able to read the attribute .
Attribute Like i have to read contentSet or action from my xml .
Here is my XML structure
<?xml version="1.0"?>
<env:ContentEnvelope xsi:schemaLocation="http://fundamental.schemas.financial.jso.com/Fundamental/2011-07-07/
https://theshare.jso.com/sites/TRM-IA/Content%20Marketplace/Strategic%20Data%20Interfaces/SDI%20Schemas/Schemas/Fundamentals/2015-09-25/FundamentalMaster.xsd"
xmlns:esg="http://fundamental.schemas.financial.jso.com/ESGSupportingInfo/2011-07-07/"
xmlns:md="http://data.schemas.financial.jso.com/metadata/2010-10-10/"
xmlns:cr="http://fundamental.schemas.financial.jso.com/CoraxData/2012-10-25/"
<env:Header>
<env:Info>
<env:Id>urn:uuid:069527ab-2c10-48bb-b3d2-206f4e66e5d2</env:Id>
<env:TimeStamp>2016-12-23T10:09:09+00:00</env:TimeStamp>
</env:Info>
<fun:OrgId>20240</fun:OrgId>
<fun:PartitionId>1</fun:PartitionId>
</env:Header>
<env:Body minVers="0.0" majVers="1" contentSet="Fundamental">
<env:ContentItem action="Insert">
<env:Data xsi:type="fun:FundamentalDataItem">
<fun:Fundamental effectiveTo="9999-12-31T00:00:00+00:00" effectiveFrom="2013-06-29T00:55:15.313+00:00" uniqueFuamentalSet="0054341342">
<fun:OrganizationId objectType="Organization" objectTypeId="404510">42565596</fun:OrganizationId>
<fun:PrimaryReportingEntityCode>A4C67</fun:PrimaryReportingEntityCode>
<fun:TotalPrimaryReportingShares>567923000.00000</fun:TotalPrimaryReportingShares>
<fun:LocalLanguageId>505074</fun:LocalLanguageId>
<fun:IndustryGroups>
<fun:IndustryGroup validTo="9999-12-31T00:00:00+00:00" validFrom="1900-01-01T00:00:00+00:00">
<fun:GroupCode>BNK</fun:GroupCode>
<fun:GroupName languageId="505074">Bank</fun:GroupName>
<fun:TaxonomyId>1</fun:TaxonomyId>
<fun:IndustryGroupCodeId>3011649</fun:IndustryGroupCodeId>
</fun:IndustryGroup>
</fun:IndustryGroups>
<fun:GaapCode>CAG</fun:GaapCode>
<fun:ConsolidationBasis>Consolidated</fun:ConsolidationBasis>
<fun:IsFiling>true</fun:IsFiling>
<fun:ConsolidationBasisId>3013598</fun:ConsolidationBasisId>
<fun:GaapCodeId>3011536</fun:GaapCodeId>
<fun:Taxonomies>
<fun:Taxonomy>1</fun:Taxonomy>
</fun:Taxonomies>
<fun:WorldScopeIds>
<fun:WorldScopeId validTo="9999-12-31T00:00:00+00:00" validFrom="2012-03-31T00:00:00+00:00">C12436390</fun:WorldScopeId>
</fun:WorldScopeIds>
</fun:Fundamental>
</env:Data>
</env:ContentItem>
Here is my java sxpression to read that .
FileInputStream file = new FileInputStream(new File("c://temp/Fun.xml"));
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document xmlDocument = builder.parse(file);
XPath xPath = XPathFactory.newInstance().newXPath();
System.out.println("*************************");
String expression = "/ContentEnvelope/Body[#minVers='0.0']/contentSet";
System.out.println(expression);
Use #attribute_name syntax to reference attribute in XPath, just like you did with #minVers :
/ContentEnvelope/Body[#minVers='0.0']/#contentSet
I have a xml file which looks like:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<alarm-response-list xmlns="http://www.ca.com/spectrum/restful/schema/response"
error="EndOfResults" throttle="277" total-alarms="288">
<alarm-responses>
<alarm id="53689bf8-6cc8-1003-0060-008010186429">
<attribute id="0x11f4a" error="NoSuchAttribute" />
<attribute id="0x12b4c">UPS DIAGNOSTIC TEST FAILED</attribute>
<attribute id="0x10b5a">IDG860237, SL3-PL4, US, SapNr=70195637,</attribute>
</alarm>
<alarm id="536b8c9a-28b3-1008-0060-008010186429">
<attribute id="0x11f4a" error="NoSuchAttribute" />
<attribute id="0x12b4c">DEVICE IN MAINTENANCE MODE</attribute>
<attribute id="0x10b5a">IDG860237, SL3-PL4, US, SapNr=70195637,</attribute>
</alarm>
</alarm-responses>
</alarm-response-list>
There a lot of these alarms. Now I want save for every alarm tag the attribute with the id = 0x10b5a in a String. But I haven't a great clue. In my way it doesn't do it. I get only showed the expression.
My idea:
FileInputStream file = new FileInputStream(
new File(
"alarms.xml"));
DocumentBuilderFactory builderFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document xmlDocument = builder.parse(file);
XPath xPath = XPathFactory.newInstance().newXPath();
System.out.println("*************************");
String expression = "/alarm-responses/alarm/attribute[#id='0x10b5a'] ";
System.out.println(expression);
NodeList nodeList = (NodeList) xPath.compile(expression).evaluate(
xmlDocument, XPathConstants.NODESET);
for (int i = 0; i < nodeList.getLength(); i++) {
System.out.println(nodeList.item(i).getFirstChild()
.getNodeValue());
}
There are several different problems here that are interacting to mean that your XPath expression doesn't match anything. Firstly the alarm-responses element isn't the root of the document - you need an extra step on the front of the path to select the alarm-response-list element. But more importantly you have namespace issues.
XPath only works when the XML has been parsed with namespaces enabled, which for some reason is not the default for DocumentBuilderFactory. You need to enable namespaces before you do newDocumentBuilder.
Now your XML document has xmlns="http://www.ca.com/spectrum/restful/schema/response", which puts all the elements in this namespace, but unprefixed node names in an XPath expression always refer to nodes that are not in a namespace. In order to match namespaced nodes you need to bind a prefix to the namespace URI and then use prefixed names in the path.
For javax.xml.xpath this is done using a NamespaceContext, but annoyingly there is no default implementation of this interface available by default in the Java core library. There is a SimpleNamespaceContext implementation available as part of Spring, or it's fairly simple to write your own. Using the Spring class:
DocumentBuilderFactory builderFactory = DocumentBuilderFactory
.newInstance();
// enable namespaces
builderFactory.setNamespaceAware(true);
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document xmlDocument = builder.parse(file);
XPath xPath = XPathFactory.newInstance().newXPath();
// Set up the namespace context
SimpleNamespaceContext ctx = new SimpleNamespaceContext();
ctx.bindNamespaceUri("ca", "http://www.ca.com/spectrum/restful/schema/response");
xPath.setNamespaceContext(ctx);
System.out.println("*************************");
// corrected expression
String expression = "/ca:alarm-response-list/ca:alarm-responses/ca:alarm/ca:attribute[#id='0x10b5a']";
System.out.println(expression);
NodeList nodeList = (NodeList) xPath.compile(expression).evaluate(
xmlDocument, XPathConstants.NODESET);
for (int i = 0; i < nodeList.getLength(); i++) {
System.out.println(nodeList.item(i).getTextContent());
}
Note also how I'm using getTextContent() to get the text under each matched element. The getNodeValue() method always returns null for element nodes.
I need to create an XML document with the following structure:
<?xml version="1.0" ?>
<Cancelacion xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
RfcEmisor="VSI850514HX4"
Fecha="2011-11-23T17:25:06"
xmlns="http://cancelacfd.sat.gob.mx">
<Folios>
<UUID>BD6CA3B1-E565-4985-88A9-694A6DD48448</UUID>
</Folios>
</Cancelacion>
The structure MUST be that way. But I'm not very familiar with the namespace declaration for the XML Elements. I can correctly generate an XML with the following structure:
<?xml version="1.0" ?>
<Cancelacion RfcEmisor="VSI850514HX4"
Fecha="2011-11-23T17:25:06"
xmlns="http://cancelacfd.sat.gob.mx">
<Folios>
<UUID>BD6CA3B1-E565-4985-88A9-694A6DD48448</UUID>
</Folios>
</Cancelacion>
But the problem is that I can't get to include the xmls:xsd and xmlns:xsi correctly. The code for properly generating the previously mentioned code is:
// Crear un document XML vacío
DocumentBuilderFactory dbfac = DocumentBuilderFactory.newInstance();
dbfac.setNamespaceAware(true);
DocumentBuilder docBuilder;
docBuilder = dbfac.newDocumentBuilder();
Document doc = docBuilder.newDocument();
doc.setXmlVersion("1.0");
doc.setXmlStandalone(true);
Element cancelacion = doc.createElementNS("http://cancelacfd.sat.gob.mx","Cancelacion");
cancelacion.setAttribute("RfcEmisor", rfc);
cancelacion.setAttribute("Fecha", fecha);
doc.appendChild(cancelacion);
Element folios = doc.createElementNS("http://cancelacfd.sat.gob.mx", "Folios");
cancelacion.appendChild(folios);
for (int i=0; i<uuid.length; i++) {
Element u = doc.createElementNS("http://cancelacfd.sat.gob.mx","UUID");
u.setTextContent(uuid[i]);
folios.appendChild(u);
}
You can add additional namespaces by calling setAttributeNS method on the root element
as shown in below example
// get the root element
Element rootElement = xmlDoc.getDocumentElement();
// add additional namespace to the root element
rootElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xsd", "http://www.w3.org/2001/XMLSchema");
You can then add elements to a given namespace by using the method like below
// append author element to the document element
Element author = xmlDoc.createElement("xsd:element");
Read this article for more details.