XML读写

最新推荐文章于 2024-05-01 15:40:09 发布

xiajin2080

最新推荐文章于 2024-05-01 15:40:09 发布

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分类专栏： XML 文章标签： XML Java thread

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本文介绍了一个使用DOM4J进行XML文件读写的Java示例。通过创建XML文档并解析XML文件，展示了如何利用DOM4J库操作XML数据。该示例包括了创建XML文档结构、设置属性和值以及将文档写入文件的过程。

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1.TestDom4J.java

package com.fayhong.test;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

import com.fayhong.util.Helper;

public class TestDom4J {
	public static void main(String args[]){
		//DOM4J使用示例


		TestDom4J testDom4J=new TestDom4J();
		testDom4J.jiexi();
		testDom4J.test();
	}
	public void test(){

		Document document = DocumentHelper.createDocument();
		Element reportElement = document.addElement("Report");

		Element person=reportElement.addElement("Person");
		Element name=person.addElement("name");
		name.setText("xiajin");
		name.setAttributeValue("des", "姓名");
		Element no=person.addElement("no");
		no.setAttributeValue("des", "学号");
		no.setText("03551220");

		Element person2=reportElement.addElement("Person");
		Element name2=person2.addElement("name");
		name2.setText("luobihong");
		Element no2=person2.addElement("no");
		no2.setText("03551225");

		File dirFile = null;
		dirFile = new File("d:/file/飞鸿科技");
		if (!(dirFile.exists()) && !(dirFile.isDirectory())) {
			boolean creadok = dirFile.mkdirs();
			if (creadok) {
				System.out.println(" ok:创建文件夹成功！ ");
			} else {
				System.out.println(" err:创建文件夹失败！ ");
			}
		}
		StringBuffer sb = new StringBuffer();
		try {
			sb.append(dirFile.getCanonicalPath()).append("/").append(Helper.generateCurrentDateB()).append(".xml");
			XMLWriter xmlWriter = new XMLWriter(new FileWriter(new File(sb.toString())));
			xmlWriter.write(document);
			xmlWriter.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
		System.out.println(sb.toString());

	}
	public void jiexi(){
		try {
			Document document = new SAXReader().read(Thread.currentThread().getContextClassLoader().getResourceAsStream("test.xml"));
			List list=document.selectNodes("//Report/Person");


			for (Iterator iterator = list.iterator(); iterator.hasNext();) {
				Element element = (Element) iterator.next();
//				System.out.println("name==="+element.getName());
//				System.out.println("attributeValue==="+element.attributeValue("a"));
//				System.out.println("number==="+element.elementText("number"));
//				System.out.println("getText==="+element.getStringValue());
				List list2=element.elements();
				for (Iterator iterator2 = list2.iterator(); iterator2.hasNext();) {
					Element name = (Element) iterator2.next();
					System.out.println(name.getName()+" : "+name.getText()+name.attributeValue("des"));
				}
			}
			Element e=document.getRootElement();
			List el=e.elements();
			for (Iterator iterator = el.iterator(); iterator.hasNext();) {
				Element element = (Element) iterator.next();
				List list2=element.elements();
				for (Iterator iterator2 = list2.iterator(); iterator2.hasNext();) {
					Element name = (Element) iterator2.next();
					System.out.println(name.getName()+" : "+name.getText()+name.attributeValue("des"));
				}
			}
			System.out.println(e);

		} catch (DocumentException e) {
			e.printStackTrace();
		}
	}
}

2.test.xml

<?xml version="1.0" encoding="UTF-8"?>
<Report><Person><name des="姓名">xiajin</name><no des="学号">03551220</no></Person><Person><name>luobihong</name><no>03551225</no></Person></Report>