xml節點練習

package com.xml.dom;
 
import java.io.File;
 
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.stream.events.Attribute;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
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;
 
public class DomTest3 {
 

public static void main(String[] args) throws Exception {
 DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
 DocumentBuilder builder=factory.newDocumentBuilder();
 Document doc=builder.parse(new File("src/shuiguo.xml"));
 
creatAttribute(doc);
 removeAttribute(doc);
 
}
 
public static void removeAttribute(Document doc) throws Exception{
 Node apple=doc.getElementsByTagName("蘋果").item(0);
 apple.getAttributes().removeNamedItem("id");
 
TransformerFactory factory=TransformerFactory.newInstance();
 Transformer former=factory.newTransformer();
 former.transform(new DOMSource(doc), new StreamResult(new File("src/shuiguo.xml")));
 

}
 
public static void creatAttribute(Document doc) throws Exception{
 Node banana=doc.getElementsByTagName("香蕉").item(0);
 Element element=(Element)banana;
 element.setAttribute("id", "55555");
 

 

TransformerFactory factory=TransformerFactory.newInstance();
 Transformer former=factory.newTransformer();
 former.transform(new DOMSource(doc), new StreamResult(new File("src/shuiguo.xml")));
 
}
 
}