Dom parsing modification and deletion method for Java knowledge accumulation-xml

Import Java.io.File;

Import java.io.IOException;

Import Javax.xml.parsers.DocumentBuilder;
Import Javax.xml.parsers.DocumentBuilderFactory;
Import javax.xml.parsers.ParserConfigurationException;
Import Javax.xml.transform.Transformer;
Import javax.xml.transform.TransformerConfigurationException;
Import javax.xml.transform.TransformerException;
Import Javax.xml.transform.TransformerFactory;
Import Javax.xml.transform.TransformerFactoryConfigurationError;
Import Javax.xml.transform.dom.DOMSource;
Import Javax.xml.transform.stream.StreamResult;

Import org.w3c.dom.Document;
Import org.w3c.dom.Element;
Import Org.w3c.dom.Node;
Import org.w3c.dom.NodeList;
Import Org.w3c.dom.Text;
Import org.xml.sax.SAXException;

public class Removenodetest {

/**
* @param args
*/
public static void Main (string[] args) {
TODO auto-generated Method Stub
Documentbuilderfactory factory= documentbuilderfactory.newinstance ();
Documentbuilder Builder;
try {
Builder = Factory.newdocumentbuilder ();
Document Doc=builder.parse (RemoveNodeTest.class.getResourceAsStream ("Student.xml"));
Element studentelenent=doc.createelement ("student");
Studentelenent.setattribute ("id", "jredu003");
Element name=doc.createelement ("name");
Text Namevalue=doc.createtextnode ("Xiaohuang");
Name.appendchild (Namevalue);
Element age=doc.createelement ("Age");
Text Agevalue=doc.createtextnode ("20");
Age.appendchild (Agevalue);
Studentelenent.appendchild (name);
Studentelenent.appendchild (age);
Element root = Doc.getdocumentelement ();
NodeList studentnodes = Root.getchildnodes ();
NodeList haha=root.getelementsbytagname ("name");
for (int i = 0; i < studentnodes.getlength (); i++) {
Node node = Studentnodes.item (i); Because the space is also considered an element, so to handle, do not output the space element
Node Node1=haha.item (i);
if (node.getnodetype () = = Node.element_node) {
String id = node.getattributes (). getNamedItem ("id")
. Getnodevalue ();
/*if (Id.equals ("003")) {
Doc.getdocumentelement (). ReplaceChild (studentelenent, node); Modify
Doc.getdocumentelement (). removechild (node); Delete
}*/
Delete the middle node in the same way
SYSTEM.OUT.PRINTLN (ID);
NodeList childs = Node.getchildnodes ();

for (int j = 0; J < Childs.getlength (); j + +) {
Node NodeE = Childs.item (j);
if (nodee.getnodetype () = = Node.element_node) {
String Aname = Nodee.getfirstchild (). Getnodevalue ();
if (Aname.equals ("Zhang San")) {
Nodee.settextcontent ("Hahah");
Nodee.getparentnode (). removechild (NodeE); Ways to delete a single intermediate node
}//methods for modifying intermediate values
System.out.println (Aname);
} else if (Nodee.getnodename (). Equals ("Age")) {
String Aage = Nodee.getfirstchild (). Getnodevalue ();
System.out.println (Aage);
}
}

}
}


Transformer transformer=transformerfactory.newinstance (). Newtransformer ();
Transformer.transform (New Domsource (DOC),
New Streamresult (New File ("C:\\a.xml"));


} catch (Parserconfigurationexception e) {
TODO auto-generated Catch block
E.printstacktrace ();
} catch (Saxexception e) {
TODO auto-generated Catch block
E.printstacktrace ();
} catch (IOException e) {
TODO auto-generated Catch block
E.printstacktrace ();
} catch (Transformerconfigurationexception e) {
TODO auto-generated Catch block
E.printstacktrace ();
} catch (Transformerfactoryconfigurationerror e) {
TODO auto-generated Catch block
E.printstacktrace ();
} catch (Transformerexception e) {
TODO auto-generated Catch block
E.printstacktrace ();
}

}

}

Dom parsing modification and deletion method for Java knowledge accumulation-xml