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package com.akonizo.examples;

import java.io.ByteArrayInputStream;

import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.transform.OutputKeys;

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.Text;

public class XmlInsertExample {

/**

* @param args

*/

public static void main(String[] args) {

String initial = "";

try {

// Parse the initial document

ByteArrayInputStream is = new ByteArrayInputStream(initial.getBytes());

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

DocumentBuilder db = dbf.newDocumentBuilder();

Document doc = db.parse(is);

// Create the new xml fragment

Text a = doc.createTextNode("afds");

Node p = doc.createElement("parameterDesc");

p.appendChild(a);

Node i = doc.createElement("insert");

i.appendChild(p);

Element r = doc.getDocumentElement();

r.insertBefore(i, r.getFirstChild());

r.normalize();

// Format the xml for output

Transformer transformer = TransformerFactory.newInstance().newTransformer();

transformer.setOutputProperty(OutputKeys.INDENT, "yes");

// initialize StreamResult with File object to save to file

StreamResult result = new StreamResult(new StringWriter());

DOMSource source = new DOMSource(doc);

transformer.transform(source, result);

System.out.println(result.getWriter().toString());

} catch (Exception e) {

e.printStackTrace();

}

}

}

結(jié)果將是：

afds

2020-11-19

總結(jié)

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