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Read xml is not giving correct value

I am trying to get the value of orderCode
public class ReadXml {
static Map<String, String> map = new HashMap<>();
static List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
public List<HashMap<String, String>> readxml() throws ParserConfigurationException, SAXException, IOException{
File file = new File(
"./resources/XMLFile/test.xml");
// Make an instance of the DocumentBuilderFactory
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document dom = db.parse(file);
dom.getDocumentElement().normalize();
dom.getDocumentElement().getNodeName();
if (dom.hasChildNodes()) {
getNote(dom.getChildNodes()); // now re run
}
return list;
}
private static List<HashMap<String, String>> getNote(NodeList nodeList) {
Node node =null;
for (int count = 0; count < nodeList.getLength(); count++) {
HashMap<String, String> data = new HashMap<>();
Node tempNode = nodeList.item(count);
// make sure it's element node.
if (tempNode.getNodeType() == Node.ELEMENT_NODE) {
if (tempNode.hasAttributes()) {
//get attributes names and values
NamedNodeMap nodeMap = tempNode.getAttributes();
for (int i = 0; i < nodeMap.getLength(); i++) {
node = nodeMap.item(i);
node.getNodeName(); //
node.getNodeValue();
}
}
}
if (tempNode.hasChildNodes()) {
// loop again if has child nodes
getNote(tempNode.getChildNodes());
}
data.put(tempNode.getNodeName(), tempNode.getTextContent());
list.add(data);
}
return list;
}
}
Xml File is below:
<submit> <shortCode>NTT</shortCode>
<order orderCode="TEST/TEST192/2018SEP30/095552">
<description>RegressionTesting</description>
<amount currencyCode="abc"/>
debitCreditIndicator="test" exponent="2" value="123"/>
My problem is , it is not giving the value of OrderCode.

One word, xPath
So, fixing your XML to look like...
<submit>
<shortCode>NTT</shortCode>
<order orderCode="TEST/TEST192/2018SEP30/095552">
<description>RegressionTesting</description>
<amount currencyCode="abc"/>
</order>
</submit>
And using...
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
Document doc = factory.newDocumentBuilder().parse(new File("Sample.xml"));
XPathFactory xFactory = XPathFactory.newInstance();
XPath xPath = xFactory.newXPath();
XPathExpression exp = xPath.compile("/submit/order");
Node node = (Node) exp.evaluate(doc.getFirstChild(), XPathConstants.NODE);
if (node != null) {
Node value = node.getAttributes().getNamedItem("orderCode");
System.out.println(value.getTextContent());
}
} catch (Exception ex) {
ex.printStackTrace();
}
Which will print...
TEST/TEST192/2018SEP30/095552
or we can go straight to the attribute itself...
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
Document doc = factory.newDocumentBuilder().parse(new File("Sample.xml"));
XPathFactory xFactory = XPathFactory.newInstance();
XPath xPath = xFactory.newXPath();
XPathExpression exp = xPath.compile("/submit/order/#orderCode");
String value = (String) exp.evaluate(doc.getFirstChild(), XPathConstants.STRING);
System.out.println(value);
} catch (Exception ex) {
ex.printStackTrace();
}
Which will print...
TEST/TEST192/2018SEP30/095552
I would also consider having a look at Java API for XML Processing (JAXP) for more details

Unable to delete a specific node in XML

I have an XML file and I need to delete a specific node. The node to be deleted will be defined dynamically based on the logic. I have been searching in internet for a solution but couldn't delete my node still. am getting error - NOT_FOUND_ERR: An attempt is made to reference a node in a context where it does not exist
Below is a sample XML File. I need to delete the node <NameValuePairs> which has <name>Local Variables</name>. Below is my sample XML Files Java Code
Sample XML File
<?xml version="1.0" encoding="UTF-8"?>
<DeploymentDescriptors xmlns="http://www.tibco.com/xmlns/dd">
<name>Test</name>
<version>1</version>
<DeploymentDescriptorFactory>
<name>RepoInstance</name>
</DeploymentDescriptorFactory>
<DeploymentDescriptorFactory>
<name>NameValuePairs</name>
</DeploymentDescriptorFactory>
<NameValuePairs>
<name>Global Variables</name>
<NameValuePair>
<name>Connections1</name>
<value>7222</value>
<requiresConfiguration>true</requiresConfiguration>
</NameValuePair>
<NameValuePair>
<name>Connections2</name>
<value>7222</value>
<requiresConfiguration>true</requiresConfiguration>
</NameValuePair>
</NameValuePairs>
<NameValuePairs>
<name>Local Variables</name>
<NameValuePair>
<name>Connections3</name>
<value>8222</value>
<requiresConfiguration>true</requiresConfiguration>
</NameValuePair>
<NameValuePair>
<name>Connections3</name>
<value>8222</value>
<requiresConfiguration>true</requiresConfiguration>
</NameValuePair>
</NameValuePairs>
</DeploymentDescriptors>
Java Code
File fDestFile = new File("myfile.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document oDoc3 = dBuilder.parse(fDestFile);
NodeList oDestFlowList = oDoc3.getElementsByTagName("NameValuePairs");
for (int m = 0; m < oDestFlowList.getLength(); m++) {
NodeList oDestchildList = oDestFlowList.item(m).getChildNodes();
for (int n = 0; n < oDestchildList.getLength(); n++) {
Node oDestchildNode = oDestchildList.item(n);
if ("name".equals(oDestchildNode.getNodeName())) {
//oDestchildNode.getParentNode().removeChild(oDestchildNode); //Not Working
//oDoc3.getDocumentElement().removeChild(oDestchildNode); //Not Working
}
}
}
}

You need create a separate reference from the parent node as an Element so that you aren't referencing the node that you are removing:
File fDestFile = new File("src/myfile.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = null;
try {
dBuilder = dbFactory.newDocumentBuilder();
Document oDoc3 = null;
oDoc3 = dBuilder.parse(fDestFile);
NodeList oDestFlowList = oDoc3.getElementsByTagName("NameValuePairs");
// Loop through all 'NameValuePairs'
for (int m = oDestFlowList.getLength()-1; m >=0 ; m--) {
NodeList oDestchildList = oDestFlowList.item(m).getChildNodes();
// Loop through children of 'NameValuePairs'
for (int n = oDestchildList.getLength()-1; n >=0 ; n--) {
// Remove children if they are of the type 'name'
if(oDestchildList.item(n).getNodeName().equals("name")){
oDestFlowList.item(m).removeChild(oDestchildList.item(n));
// For debugging
System.out.println(oDestchildList.item(n).getNodeName());
}
}
}
Source source = new DOMSource(oDoc3);
Result result = new StreamResult(fDestFile);
Transformer transformer = null;
transformer = TransformerFactory.newInstance().newTransformer();
// Transform your XML document (i.e. save changes to file)
transformer.transform(source, result);
} catch (Exception e) {
// Catch the exception here
e.printStackTrace();
}
}
If you are still having issues, then I would think that it is an issue with the node types. This was working for me before I put the check in for 'oDestchildNode.getNodeType()' but I would look at what type of node you are returning and go from there.

Here is the final piece of code that finally worked
public static void main(String[] args) {
File fXmlSubFile = new File("Sub.xml");
File fXmlOriginalFile = new File("Original.xml");
File fDestFile = new File("myfile.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder;
FileChannel source = null;
FileChannel destination = null;
XPath xPath = XPathFactory.newInstance().newXPath();
try{
if (!fDestFile.exists()) {
fDestFile.createNewFile();
}
source = new FileInputStream(fXmlOriginalFile).getChannel();
destination = new FileOutputStream(fDestFile).getChannel();
if (destination != null && source != null) {
destination.transferFrom(source, 0, source.size());
}
if (source != null) {
source.close();
}
if (destination != null) {
destination.close();
}
dBuilder = dbFactory.newDocumentBuilder();
Document oSubDoc = dBuilder.parse(fXmlSubFile);
Document oDestDoc = dBuilder.parse(fDestFile);
oSubDoc.getDocumentElement().normalize();
oDestDoc.getDocumentElement().normalize();
String sDestExpression = "/DeploymentDescriptors/NameValuePairs";
String sSubExpression = "/NameValuePairs";
NodeList nodeDestList = (NodeList) xPath.compile(sDestExpression).evaluate(oDestDoc, XPathConstants.NODESET);
NodeList nodeSubList = (NodeList) xPath.compile(sSubExpression).evaluate(oSubDoc, XPathConstants.NODESET);
for (int i = nodeDestList.getLength()-1; i >=0 ; i--) {
Node oDestNode = nodeDestList.item(i);
if (oDestNode.getNodeType() == Node.ELEMENT_NODE) {
Element oDestElement = (Element) oDestNode;
for (int j =0; j<nodeSubList.getLength(); j++) {
Node oSubNode = nodeSubList.item(j);
if (oSubNode.getNodeType() == Node.ELEMENT_NODE) {
Element oSubElement = (Element) oSubNode;
if(oDestElement.getElementsByTagName("name").item(0).getTextContent().equals(oSubElement.getElementsByTagName("name").item(0).getTextContent())){
oDestNode.getParentNode().removeChild(oDestNode);
}
}
}
}
}
Source src = new DOMSource(oDestDoc);
Result result = new StreamResult(fDestFile);
Transformer transformer = null;
transformer = TransformerFactory.newInstance().newTransformer();
// Transform your XML document (i.e. save changes to file)
transformer.transform(src, result);
}catch(Exception ex){
System.out.println("error:"+ex.getMessage());
ex.printStackTrace();
}
}

XML attribute Parsing

When parsing the xml, I want to retrieve the token value:
PCWTJ87OXNnGhwzvzqvbhepi2qQM6PhMdNHn7V9UuVw|
But I am currently getting the related:
Found attribute: expiry with value: 2014-10-29T22:20:00Z
xml file:
<?xml version="1.0"?>
<Inrix responseId="63448807-78d3-4ee8-90d6-a8b64abff8fc" statusText="" statusId="0" createdDate="2014-10-29T21:21:55Z" versionNumber="5.4" copyright="Copyright INRIX Inc." docType="GetSecurityToken">
<AuthResponse>
<AuthToken expiry="2014-10-29T22:20:00Z">PCWTJ87OXNnGhwzvzqvbhepi2qQM6PhMdNHn7V9UuVw|</AuthToken>
<ServerPath>devzone.inrix.com/traffic/inrix.ashx</ServerPath>
<ServerPaths>
<ServerPath region="NA" type="API">http://na.api.inrix.com/Traffic/Inrix.ashx</ServerPath>
<ServerPath region="NA" type="TTS">http://na-rseg-tts.inrix.com/RsegTiles/tile.ashx</ServerPath>
</ServerPaths>
</AuthResponse>
</Inrix>
This is the code I wrote to parse the xml file above:
DocumentBuilderFactory factory =DocumentBuilderFactory.newInstance();
DocumentBuilder builder =factory.newDocumentBuilder();
Document document = builder.parse(new File(inputfile));
document.getDocumentElement().normalize();
NodeList AuthTokens = document.getElementsByTagName("AuthToken");
//NodeList AuthTokens = document.getElementsByTagName("ServerPath");
int num = AuthTokens.getLength();
for (int i=0; i<num;i++){
Element node = (Element) AuthTokens.item(i);
NamedNodeMap attributes = node.getAttributes();
int numAttrs = attributes.getLength();
for (int j=0; j<numAttrs;j++){
Attr attr = (Attr) attributes.item(j);
String attrName = attr.getNodeName();
String attrValue = attr.getNodeValue();
System.out.println(attr.getParentNode());
System.out.println("Found attribute: " + attrName + " with value: " + attrValue);
}
}
How do I get the correct value?

I believe you want the contents of the node, not its' attributes. Change your Element to Node and then you can call Node.getTextContent()
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new File(inputfile));
document.getDocumentElement().normalize();
NodeList AuthTokens = document.getElementsByTagName("AuthToken");
// NodeList AuthTokens = document.getElementsByTagName("ServerPath");
int num = AuthTokens.getLength();
for (int i = 0; i < num; i++) {
Node node = AuthTokens.item(i);
String token = node.getTextContent();
System.out.println(token);
}
Output is (as requested)
PCWTJ87OXNnGhwzvzqvbhepi2qQM6PhMdNHn7V9UuVw|

getNodeValue returnining null?

Hi I am trying to parse and XML file from an url, my NodeList contains values but getNodeValue for each node returns null. Can anybody help me?
This is my method where I parse the xml.
public ArrayList xmloku(String url) {
ArrayList xmllistesi = new ArrayList();
try {
URL xmlyolu = new URL(url);
DocumentBuilderFactory dFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder dBuilder = dFactory.newDocumentBuilder();
Document document = dBuilder.parse(new InputSource(xmlyolu
.openStream()));
document.getDocumentElement().normalize();
NodeList nodeListCountry = document
.getElementsByTagName("karikatur");
for (int i = konum; i < nodeListCountry.getLength(); i++) {
Node node = nodeListCountry.item(i);
Element elementMain = (Element) node;
xmllistesi.add(elementMain.getNodeValue());
}

Instead of getNodeValue() try using getTextContent()
for (int i = konum; i < nodeListCountry.getLength(); i++) {
Node node = nodeListCountry.item(i);
Element elementMain = (Element) node;
xmllistesi.add(elementMain.getTextContent());
}

Parsing XML with attributes in Java?

I have a url: http://ws.audioscrobbler.com/2.0/?method=chart.getlovedtracks&api_key=b25b959554ed76058ac220b7b2e0a026&page=3&limit=25 that display XML with information on A song name and artist. It also display 3 links to different sized images, these image urls are identified by
<image size="small">
<image size="large">
<image size="extralarge">
Here is the code I am using at the moment however I do not know how to get the url for the medium sized image only ???
private void parseXml(String urlPath) throws Exception {
URL url = new URL(urlPath);
URLConnection connection = url.openConnection();
DocumentBuilder db = DOCUMENT_BUILDER_FACTORY.newDocumentBuilder();
final Document document = db.parse(connection.getInputStream());
XPath xPathEvaluator = XPATH_FACTORY.newXPath();
XPathExpression nameExpr = xPathEvaluator.compile("lfm/tracks/track/name");
NodeList trackNameNodes = (NodeList) nameExpr.evaluate(document, XPathConstants.NODESET);
for (int i = 0; i < trackNameNodes.getLength(); i++) {
Node trackNameNode = trackNameNodes.item(i);
System.out.println(String.format("Track Name: %s" , trackNameNode.getTextContent()));
XPathExpression artistImageExpr = xPathEvaluator.compile("following-sibling::/image");
NodeList artistImageNodes = (NodeList) artistImageExpr.evaluate(trackNameNode, XPathConstants.NODESET);
for (int j=0; j < artistImageNodes.getLength(); j++) {
System.out.println(String.format(" -Image URL: %s", artistImageNodes.item(j).getTextContent()));
}
XPathExpression artistNameExpr = xPathEvaluator.compile("following-sibling::artist/name");
NodeList artistNameNodes = (NodeList) artistNameExpr.evaluate(trackNameNode, XPathConstants.NODESET);
for (int j=0; j < artistNameNodes.getLength(); j++) {
System.out.println(String.format(" - Artist Name: %s", artistNameNodes.item(j).getTextContent()));
}
}
}