xml节点练习
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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("苹果").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")));
}
}
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