DOM4J parsing an XML file

Import Dom4j.jar Package

The package needs you to download.

　　Creating an XML file

XMLWriter writer = null;//declares an object that writes XML

OutputFormat format =

Outputformat.createprettyprint ();

Format.setencoding ("Utf-8");//Set the encoding format of the XML file

String FilePath = "f://student.xml";//Save XML file path

File File = new file (FilePath);

Document _document = Documenthelper.createdocument ();

Element _root = _document.addelement ("Student Information");//----------Root

Element student = _root.addelement ("student");

Element _id = student.addelement ("number");

_id.settext ("001");

Element _name = student.addelement ("name");

_name.settext ("Grey Machine");

Element _age = student.addelement ("Age");

_age.settext ("18");

for (int i=0;i<5;i++) {

Element _student = _root.addelement ("Record");

_student.addattribute ("Sid", "XX" +i);

_student.addattribute ("Phone", "1100" +i);

}

Try

{

writer = new XMLWriter (new FileWriter (file), format);

Writer.write (_document);

Writer.close ();

} catch (IOException e) {

E.printstacktrace ();

}

System.out.println ("End of Operation!");

To generate a result diagram:

　　

　　Reading an XML file

Saxreader reader = new Saxreader ();

String FilePath = "F://student.xml";

File File = new file (FilePath);

Document document;

try {

　　Document = Reader.read (file);

　　Element root = Document.getrootelement ();//Get root node

　　/*element database = (Element) root.selectsinglenode ("//Student Information/student");

　　List List = Database.elements (); Get a collection of child elements under database element

　　for (Object obj:list) {

　　element element = (element) obj;

　　GetName () is the element name, GetText () is the element value

　　System.out.println (Element.getname () + ":" +element.gettext ());

　　}*/

　　List nodes = root.elements ("student");

　　for (Iterator it = Nodes.iterator (); It.hasnext ();) {

　　Element elm = (Element) It.next ();

　　For (Iterator it2=elm.elementiterator (); It2.hasnext ();) {

　　Element elel= (Element) It2.next ();

　　System.out.println (Elel.getname () + ":" +elel.gettext () + ":");

　　}

　　}

　　for (Iterator i = root.elementiterator ("Record"), I.hasnext ();)//Traverse all record child nodes

　　{

　　element student = (element) I.next ();

　　if (Student.attributevalue ("Sid"). Equals ("001"))//If the value of the record attribute SID equals 001

　　For (Iterator it= student.attributeiterator (); It.hasnext ();)//Get all the properties of the record node

　　{

　　Attribute Attribute = (Attribute) it.next ();

　　String name=attribute.getname ();//Get Property name

　　String Text=attribute.gettext ();//Get property value

　　SYSTEM.OUT.PRINTLN (name + ":" +text);

　　}

　　}

　　} catch (Documentexception e) {

　　E.printstacktrace ();

　　}

　　This document is easy to read, so it uses a control-based encoding format.

Technology sharing: Edith Academy

DOM4J parsing an XML file