<?xml version="1.0" encoding="UTF-8" standalone="no"?><person>
<name name1="zhangsan">123456</name>
<name name1="123">456789</name>
<age age1="445">10</age>
<school school1="fd">123</school>
<sex sex1="man">132</sex>
<sex>nan</sex></person>

利用java程序进行操作

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.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;
import org.w3c.dom.Text;
import org.xml.sax.SAXException;

public class test1 {
	public static void main(String[] args) throws Exception {
//		printName();
	//	addNode();
		Modify();
	}
	//输出所有标签
	private static void printName() throws ParserConfigurationException,
			SAXException, IOException {
		DocumentBuilderFactory builderFactory= DocumentBuilderFactory.newInstance();
		DocumentBuilder  builder = builderFactory.newDocumentBuilder();
		Document document = builder.parse("src/4.xml");
		NodeList list = document.getElementsByTagName("name");
		for(int i=0;i<list.getLength();i++){
			Node node = list.item(i);
			String str = node.getTextContent();
			System.out.println(str);
		}
	}
	
	//添加sex元素
	private static void addNode() throws Exception{
		DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = builderFactory.newDocumentBuilder();
		Document document = builder.parse("src/4.xml");
		NodeList list = document.getElementsByTagName("person");
		Node node = list.item(0);
		Text text = document.createTextNode("nv");
		Element element = document.createElement("sex");
		element.appendChild(text);
		node.appendChild(element);
		TransformerFactory formFactory = TransformerFactory.newInstance();
		Transformer former = formFactory.newTransformer();
		DOMSource domSource = new DOMSource(document);
		former.transform(domSource, new StreamResult("src/4.xml"));
		
	}
	
	//修改sex内容
		private static void Modify() throws Exception{
			DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
			DocumentBuilder builder = builderFactory.newDocumentBuilder();
			Document document = builder.parse("src/4.xml");
			Node node = document.getElementsByTagName("sex").item(1);
			node.setTextContent("nan");
			TransformerFactory formerFactory = TransformerFactory.newInstance();
			Transformer former = formerFactory.newTransformer();
			former.transform(new DOMSource(document),new StreamResult("src/4.xml"));
			
		}
}