用JDOM读取XML文件需先用org.jdom.input.SAXBuilder对象的build()方法创建Document对象,然后用Document类、Element类等的方法读取所需的内容。要导入jdom的jar包
XML文档：
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<?xml version=“1.0″ encoding=“UTF-8″?>
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<HD>
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<disk name=“C”>
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<capacity>8G</capacity>
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<directories>200</directories>
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<files>1580</files>
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</disk>
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<disk name=“D”>
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<capacity>10G</capacity>
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<directories>500</directories>
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<files>3000</files>
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</disk>
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</HD>
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Java示例程序：
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package com.lssrc.dom4jtest;
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import java.util.*;
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import org.jdom2.*;
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import org.jdom2.input.*;
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public class Sample1 {
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public static void main(String[] args) throws Exception {
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SAXBuilder sb = new SAXBuilder();
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Document doc = sb.build(Sample1.class.getClassLoader().getResourceAsStream(“sample.xml”));
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Element root = doc.getRootElement();
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List list = root.getChildren(“disk”);
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for (int i = 0; i < list.size(); i++) {
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Element element = (Element) list.get(i);
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String name = element.getAttributeValue(“name”);
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String capacity = element.getChildText(“capacity”);
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String directories = element.getChildText(“directories”);
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String files = element.getChildText(“files”);
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System.out.println(“磁盘信息:”);
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System.out.println(“分区盘符:” + name);
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System.out.println(“分区容量:” + capacity);
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System.out.println(“目录数:” + directories);
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System.out.println(“文件数:” + files);
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System.out.println(“———————————–”);
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}
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}
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}
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