I need insert node to the beginning of my XML file, after I sought in web I found keyword insertBefore but I can't apply this keyword in my code. However when I used appendChild, then inserted this keyword the element gets inserted to the end of xml file.How can I use insertBefore keyword to insert to beginning of xml tree.
For example:
<n>
<a2>
<b></b> <c></c>
</a2>
<a1>
<b></b> <c></c>
</a1>
</n>
I need to insert element to the beginning of the xml file same that:
<n>
<a1>
<b></b> <c></c>
</a1>
<a2>
<b></b> <c></c>
</a2>
</n>
my java code:
public void insertNewProject(Project entity) {
String filePath = "location.xml";
File xmlFile = new File(filePath);
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder;
try {
dBuilder = dbFactory.newDocumentBuilder();
Document doc;
doc = dBuilder.parse(xmlFile);
doc.getDocumentElement().normalize();
Node n = doc.getElementsByTagName("n").item(0);
Element a = doc.createElement("a");
n.appendChild(a);
Element b = doc.createElement("b");
b.appendChild(doc.createTextNode(entity.getLocation()));
a.appendChild(b);
Element c = doc.createElement("c");
c.appendChild(doc.createTextNode(entity.getName()));
a.appendChild(c);
doc.getDocumentElement().normalize();
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource domSource = new DOMSource(doc);
StreamResult streamResult = new StreamResult(new File("location.xml"));
transformer.transform(domSource, streamResult);
} catch (ParserConfigurationException pce) {
return;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerException tfe) {
return;
}
}
Why cant you use the firstChild method and then insert before? Like
n.insertBefore(a, n.getFirstChild());
Full code
public void insertNewProject(Project entity) {
String filePath = "location.xml";
File xmlFile = new File(filePath);
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder;
try {
dBuilder = dbFactory.newDocumentBuilder();
Document doc;
doc = dBuilder.parse(xmlFile);
doc.getDocumentElement().normalize();
Node n = doc.getElementsByTagName("n").item(0);
Element a = doc.createElement("a");
n.insertBefore(a, n.getFirstChild());
Element b = doc.createElement("b");
b.appendChild(doc.createTextNode(entity.getLocation()));
a.appendChild(b);
Element c = doc.createElement("c");
c.appendChild(doc.createTextNode(entity.getName()));
a.appendChild(c);
doc.getDocumentElement().normalize();
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource domSource = new DOMSource(doc);
StreamResult streamResult = new StreamResult(new File("location.xml"));
transformer.transform(domSource, streamResult);
} catch (ParserConfigurationException pce) {
return;
} catch (IOException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (TransformerException tfe) {
return;
}
}
I changed the following part in your code.
Please check if this is what you are looking for?
Node n = doc.getElementsByTagName("n").item(0);
Element a = doc.createElement("a");
Node a2 = doc.getElementsByTagName("a2").item(0);
n.insertBefore(a, a2);//.appendChild(a);
to insert an element in start you need to know what is first element. then you can insert node in start by following changes in your code
doc = dBuilder.parse(xmlFile);
doc.getDocumentElement().normalize();
NodeList nlist = doc.getElementsByTagName("a2");
Node n = doc.getElementsByTagName("n").item(0);
Node a1 = nlist.item(0);
Element a = doc.createElement("a");
n.insertBefore(a, a1);
Related
private void bt_create_xml(ActionEvent e) {
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
// root elements
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("University");
doc.appendChild(rootElement);
Element staff = doc.createElement("student");
// add staff to root
rootElement.appendChild(staff);
// add xml attribute
staff.setAttribute("rollno", tf_input_id.getText());
Element name = doc.createElement("fullname");
name.setTextContent(tf_input_fullname.getText());
staff.appendChild(name);
Element code = doc.createElement("code");
code.setTextContent(tf_input_code.getText());
staff.appendChild(code);
Element birthday = doc.createElement("birthday");
birthday.setTextContent(tf_input_birth.getText());
staff.appendChild(birthday);
Element department = doc.createElement("department");
department.setTextContent(tf_input_depart.getText());
staff.appendChild(department);
Element address = doc.createElement("address");
address.setTextContent(tf_input_add.getText());
staff.appendChild(address);
try{
writeXml(doc, System.out);
FileOutputStream out=new FileOutputStream("D:\\JAVA\\XML-CUOIKY\\XML.xml");
writeXml(doc,out);
}catch (Exception exx){
exx.printStackTrace();
}
} catch (ParserConfigurationException ex) {
ex.printStackTrace();
}
}
private static void writeXml(Document doc,
OutputStream output)
throws TransformerException {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
// pretty print
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(output);
transformer.transform(source, result);
}
"I want append data at the end of text file .xml . I use textfield to SetTextContent . Now I want add next tag on file xml"
After form submission, the values are to be stored in an XML file. (XML Dom PArser)
Below given the program which I tried to do the same.
public void writeXMLfile(ApplyLieuDto lieuDto) {
String satDte =
Util.convertUtilDateToString(lieuDto.getSatDutyDteUtil());
//String satDteAMPM = lieuDto.getSatDutyDteAmPm();
//String satDutyDte = satDte + satDteAMPM;
String offDte = Util.convertUtilDateToString(lieuDto.getOffDteUtil());
//String offDteAMPM = lieuDto.getOffDteAmPm();
//String offDate = offDte + offDteAMPM;
String modDate =
Util.convertUtilDateToString(lieuDto.getDateUpdateUtil());
String filePath = "file.xml";
try {
DocumentBuilderFactory docFactory =
DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
// root elements
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("lieu");
doc.appendChild(rootElement);
// staff elements
Element staff = doc.createElement("staff");
rootElement.appendChild(staff);
// set attribute to staff element
Attr attr = doc.createAttribute("id");
attr.setValue(lieuDto.getStaffId());
staff.setAttributeNode(attr);
// name elements
Element firstname = doc.createElement("name");
firstname.appendChild(doc.createTextNode(lieuDto.getName()));
staff.appendChild(firstname);
// contact number elements
Element contact = doc.createElement("contactnumber");
contact.appendChild(doc.createTextNode(lieuDto.getContact()));
staff.appendChild(contact);
// email elements
Element email = doc.createElement("email");
email.appendChild(doc.createTextNode(lieuDto.getEmail()));
staff.appendChild(email);
// satdutydate elements
Element satDutyDate = doc.createElement("satDte");
satDutyDate.appendChild(doc.createTextNode(satDte));
staff.appendChild(satDutyDate);
// satdutydateAMPM elements
Element satDutyDateAMPM = doc.createElement("satDteAMPM");
satDutyDateAMPM.appendChild(doc.createTextNode
(lieuDto.getSatDutyDteAmPm()));
staff.appendChild(satDutyDateAMPM);
// offDate elements
Element offDat = doc.createElement("offdate");
offDat.appendChild(doc.createTextNode(offDte));
staff.appendChild(offDat);
// offDateAMPM elements
Element offDatAMPM = doc.createElement("offdateAMPM");
offDatAMPM.appendChild(doc.createTextNode(lieuDto.getOffDteAmPm()));
staff.appendChild(offDatAMPM);
// appOfficer elements
Element appOfficer = doc.createElement("approvingofficer");
appOfficer.appendChild(doc.createTextNode
(lieuDto.getApprovingOfficer()));
staff.appendChild(appOfficer);
// Date elements
Element modifieddate = doc.createElement("modifieddate");
modifieddate.appendChild(doc.createTextNode(modDate));
staff.appendChild(modifieddate);
// status elements
Element status = doc.createElement("status");
status.appendChild(doc.createTextNode(lieuDto.getStatus()));
staff.appendChild(status);
// write the content into xml file
TransformerFactory transformerFactory =
TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new
FileWriter(filePath,true));
// Output to console for testing
StreamResult strmResult = new StreamResult(System.out);
transformer.transform(source, result);
transformer.transform(source, strmResult);
System.out.println("File saved!");
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
The output I got as something like this below
<company>
<staff id="1">
<firstname>Priya</firstname>
<lastname>Rajan</lastname>
<salary>100000</salary>
</staff>
</company>
<company>
<staff id="2">
<firstname>Peter</firstname>
<lastname>Jas</lastname>
<salary>100000</salary>
</staff>
</company>
But, the expected result is
<company>
<staff id="1">
<firstname>Priya</firstname>
<lastname>Rajan</lastname>
<salary>100000</salary>
</staff>
<staff id="2">
<firstname>Peter</firstname>
<lastname>Jas</lastname>
<salary>100000</salary>
</staff>
</company>
Root element shouldn't be repeat and, the child nodes only needed to be appended.
Please help me on this.
Thanks.
I got the answer. `
public boolean writeXMLfile(ApplyLieuDto lieuDto)
{
boolean isAdded = false;
String filePath = "file.xml";
DocumentBuilderFactory documentBuilderFactory =
DocumentBuilderFactory.newInstance();
try {
DocumentBuilder documentBuilder =
documentBuilderFactory.newDocumentBuilder();
Document doc = documentBuilder.parse(filePath);
NodeList oldList = doc.getElementsByTagName("staff");
int oldListCount = oldList.getLength();
System.out.println("Old List Count Value :: "+oldListCount);
Element root = doc.getDocumentElement();
Element rootElement = doc.getDocumentElement();
Collection<ApplyLieuDto> svr = new ArrayList<ApplyLieuDto>();
svr.add(lieuDto);
for(ApplyLieuDto lieu : svr)
{
Element staff = doc.createElement("staff");
rootElement.appendChild(staff);
// set attribute to staff element
Attr attr = doc.createAttribute("id");
attr.setValue(lieu.getStaffId());
staff.setAttributeNode(attr);
Element firstname = doc.createElement("name");
firstname.appendChild(doc.createTextNode(lieu.getName()));
staff.appendChild(firstname);
// contact number elements
Element contact = doc.createElement("contactnumber");
contact.appendChild(doc.createTextNode(lieu.getContact()));
staff.appendChild(contact);
// email elements
Element email = doc.createElement("email");
email.appendChild(doc.createTextNode(lieu.getEmail()));
staff.appendChild(email);
String satDte = Util.convertUtilDateToString(lieu.getSatDutyDteUtil());
// satdutydate elements
Element satDutyDate = doc.createElement("satDte");
satDutyDate.appendChild(doc.createTextNode(satDte));
staff.appendChild(satDutyDate);
// satdutydateAMPM elements
Element satDutyDateAMPM = doc.createElement("satDteAMPM");
satDutyDateAMPM.appendChild(doc.createTextNode(lieu.getSatDutyDteAmPm()));
staff.appendChild(satDutyDateAMPM);
String offDte = Util.convertUtilDateToString(lieu.getOffDteUtil());
// offDate elements
Element offDat = doc.createElement("offdate");
offDat.appendChild(doc.createTextNode(offDte));
staff.appendChild(offDat);
// offDateAMPM elements
Element offDatAMPM = doc.createElement("offdateAMPM");
offDatAMPM.appendChild(doc.createTextNode(lieu.getOffDteAmPm()));
staff.appendChild(offDatAMPM);
// appOfficer elements
Element appOfficer = doc.createElement("approvingofficer");
appOfficer.appendChild(doc.createTextNode(lieu.getApprovingOfficer()));
staff.appendChild(appOfficer);
String modDate = Util.convertUtilDateToString(lieu.getDateUpdateUtil());
// Date elements
Element modifieddate = doc.createElement("modifieddate");
modifieddate.appendChild(doc.createTextNode(modDate));
staff.appendChild(modifieddate);
// status elements
Element status = doc.createElement("status");
status.appendChild(doc.createTextNode(lieu.getStatus()));
staff.appendChild(status);
root.appendChild(staff);
}
DOMSource source = new DOMSource(doc);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
StreamResult result = new StreamResult(filePath);
StreamResult strmResult = new StreamResult(System.out);
transformer.transform(source, result);
transformer.transform(source, strmResult);
NodeList newList = doc.getElementsByTagName("staff");
int newListCount = newList.getLength();
System.out.println("New List Count Value :: "+newListCount);
if(newListCount > oldListCount)
{
isAdded = true;
}
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
return isAdded;
}
`
I am creating xml through dom parser as shown below in a method Please advise is there any other better approach to achieve the same in java as dom parser is considered to be loading the memory that why i was looking for better approach
String xmlString = null ;
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.newDocument();
DOMSource source = new DOMSource(doc);
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
SimpleDateFormat dateformatyyyyMMdd = new SimpleDateFormat("yyyyMMdd");
Element rootElement = doc.createElement("abcmail");
doc.appendChild(rootElement);
Element invoiceReferenceNotificationMessage = doc.createElement("invoiceReferenceNotificationMessage");
rootElement.appendChild(invoiceReferenceNotificationMessage);
Element ceReference = doc.createElement("ceReference");
ceReference.appendChild(doc.createTextNode(irm.getceReference()));
ceReferenceNotificationMessage.appendChild(ceReference);
Element RBSReference = doc.createElement("ABSReference");
ABSReference.appendChild(doc.createTextNode(irm.getABSReference()));
ceReferenceNotificationMessage.appendChild(ABSReference);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.transform(source, result);
writer.flush();
xmlString = writer.toString();
return xmlString;
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
}
return xmlString;
}
The better way is using JAXB.
You can see an example here
I apologize if this question has been asked somewhere, I've been searching on google for over an hour and can't seem to figure out how to do this.
I've created a config file for an application I'm making which is stored in XML and I've gotten the application to successfully create the XML file if it doesn't exist using DOM,
(code,in case it's needed)
public static void newConfig() {
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
// root element
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("settings");
doc.appendChild(rootElement);
// address element
Element address = doc.createElement("address");
address.appendChild(doc.createTextNode("127.0.0.1"));
rootElement.appendChild(address);
// port element
Element port = doc.createElement("port");
port.appendChild(doc.createTextNode("3306"));
rootElement.appendChild(port);
// user element
Element user = doc.createElement("user");
user.appendChild(doc.createTextNode("user"));
rootElement.appendChild(address);
// password element
Element pass = doc.createElement("pass");
pass.appendChild(doc.createTextNode("password"));
rootElement.appendChild(pass);
// database element
Element datab = doc.createElement("database");
datab.appendChild(doc.createTextNode("A1"));
rootElement.appendChild(datab);
// write the content to XML
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new File("config.xml"));
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.transform(source, result);
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
}
}
which creates this:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<settings>
<port>3306</port>
<address>127.0.0.1</address>
<pass>password</pass>
<database>A1</database>
</settings>
how would I go about retrieving those textnodes as an array of strings?
try this
NodeList nodes = docBuilder.parse(new File("1.xml")).getDocumentElement().getChildNodes();
String[] a = new String[4];
for (int i = 0, j = 0; i < nodes.getLength(); i++) {
Node n = nodes.item(i);
if (n instanceof Element) {
a[j++] = n.getTextContent().trim();
}
}
How to write xml for Multiple records ?
Desired output
<Root>
<Header>
<HeaderTag>Table of Contents</HeaderTag>
<HeaderRow>
<Content>1.Intoduction</Content>
</HeaderRow>
<HeaderRow>
<Content>2.Basics</Content>
</HeaderRow>
</Header>
</Root>
Need looping or iterator for Header Row to accomodate rows for content as mentioned above.
Appreciate your help.
Using below piece of code
public void createRuleXML() {
try {
String newXmlPath = "C:\\write\\CreatedRuleXml.xml";
DocumentBuilderFactory documentFactory =
DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder =
documentFactory.newDocumentBuilder();
// define root elements
Document document = documentBuilder.newDocument();
Element rootElement = document.createElement("Root");
document.appendChild(rootElement);
// define school elements
Element TocHeader = document.createElement("Header");
rootElement.appendChild(TocHeader);
Element HeaderTag = document.createElement("HeaderTag");
HeaderTag.appendChild(document.createTextNode("Table Of Contents"));
TocHeader.appendChild(HeaderTag);
Element TocHeaderRow = document.createElement("HeaderRow");
TocHeader.appendChild(TocHeaderRow);
Element Content = document.createElement("Content");
Content.appendChild(document.createTextNode("1.Introduction"));
TocHeaderRow.appendChild(Content);
Content.appendChild(document.createTextNode("2.Basics"));
TocHeaderRow.appendChild(Content);
However its is returning
Table Of Contents1.Introduction2.Basics
Got fix with below piece of code.
public void createRuleXML() {
try {
String newXmlPath = "C:\\docwrite\\CreatedRuleXml.xml";
DocumentBuilderFactory documentFactory = DocumentBuilderFactory
.newInstance();
DocumentBuilder documentBuilder = documentFactory
.newDocumentBuilder();
// define root elements
Document document = documentBuilder.newDocument();
Element rootElement = document.createElement("Root");
document.appendChild(rootElement);
// define school elements
Element TocHeader = document.createElement("Header");
rootElement.appendChild(TocHeader);
Element HeaderTag = document.createElement("HeaderTag");
HeaderTag.appendChild(document.createTextNode("Table Of Contents"));
TocHeader.appendChild(HeaderTag);
TocHeader.appendChild(getToc(document, "1.Introduction"));
TocHeader.appendChild(getToc(document, "2.Basics"));
// creating and writing to xml file
TransformerFactory transformerFactory = TransformerFactory
.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
DOMSource domSource = new DOMSource(document);
StreamResult streamResult = new StreamResult(new File(newXmlPath));
transformer.transform(domSource, streamResult);
System.out.println("File saved to specified path!");
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
}
}
private static Node getToc(Document doc, String tocContent) {
Element tocHeaderRow = doc.createElement("HeaderRow");
//create name element
tocHeaderRow.appendChild(getDetailElements(doc, tocHeaderRow, "Content", tocContent));
return tocHeaderRow;
}
//utility method to create text node
private static Node getDetailElements(Document doc, Element element, String name, String value) {
Element node = doc.createElement(name);
node.appendChild(doc.createTextNode(value));
return node;
}