Java dom4j Create, modify, and delete XML file contents

ImportJava.io.File;Importjava.io.FileNotFoundException;ImportJava.io.FileOutputStream;Importjava.io.IOException;Importjava.io.UnsupportedEncodingException;ImportOrg.dom4j.Attribute;Importorg.dom4j.Document;Importorg.dom4j.DocumentException;ImportOrg.dom4j.DocumentHelper;Importorg.dom4j.Element;ImportOrg.dom4j.io.OutputFormat;ImportOrg.dom4j.io.SAXReader;ImportOrg.dom4j.io.XMLWriter;Importorg.junit.Test; Public classWriter3 {@Test

/**
Creating XML node Information

*/     Public voidmodify1 () {Document doc=documenthelper.createdocument (); Element Rootelem=doc.addelement ("ContactList"); Element Contactelem= Rootelem.addelement ("Contact")); Contactelem.addattribute ("id", "001"). AddAttribute ("name", "Eric"); Writes the attribute value directly on the node contactelem.addelement ("Name"). AddText ("Zhang San")); Add label name content is text contactelem.addelement ("Age"). AddText ("20"); Add tag age content belongs to text//Whether it is created, modified, or deleted after you write to the file FileOutputStream out=NewFileOutputStream ("E:/contact2.xml"); OutputFormat format=Outputformat.createprettyprint (); Format.setencoding ("Utf-8"); XMLWriter writer=NewXMLWriter (Out,format);      Writer.write (DOC); Writer.close ();

The creation effect is as follows:

<?xml version= "1.0" encoding= "Utf-8"?><contactlist> <contact   id= "001" Name= "Eric" >     < name>jimi</name>      <age>20</age>   </contact> </contactList>

To modify a code snippet:

@Test Public voidModify3 ()throwsException {//modify this three lines of code Document doc=NewSaxreader (). Read (NewFile ("E:/contact2.xml")); Element name=doc.getrootelement (). Element ("contact"). Element ("name"); Name.settext ("Jimi");

FileOutputStream out=NewFileOutputStream ("E:/contact2.xml"); OutputFormat format=Outputformat.createprettyprint (); Format.setencoding ("Utf-8"); XMLWriter writer=NewXMLWriter (Out,format);        Writer.write (DOC); Writer.close ();}

　　

Java dom4j Create, modify, and delete XML file contents