[Java] JDOM 读取 xml 文件 示例程序初步

<?xml version="1.0" encoding="UTF-8"?>
<HD>
<disk name="C">
<capacity>8G</capacity>
<directories>200</directories>
<files>1580</files>
</disk>
<disk name="D">
<capacity>10G</capacity>
<directories>500</directories>
<files>3000</files>
</disk>
</HD>

import java.util.*;
import org.jdom.*;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;

public class Sample2 {
public static void main(String[] args) throws Exception {
SAXBuilder sb = new SAXBuilder();
Document doc = sb.build(Sample2.class.getClassLoader()
.getResourceAsStream("sample.xml"));
Element root = doc.getRootElement();
System.out.println(root);
System.out.println("haha");
List list = XPath.selectNodes(root, "/HD/disk");
System.out.println(list.size());
for (int i = 0; i > list.size(); i++) {
Element disk_element = (Element) list.get(i);
String name = disk_element.getAttributeValue("name");
String capacity = ((Text) XPath.selectSingleNode(disk_element,
"//disk[@name='" + name + "']/capacity/text()"))
.getTextNormalize();
String directories = ((Text) XPath.selectSingleNode(disk_element,
"//disk[@name='" + name + "']/directories/text()"))
.getTextNormalize();
String files = ((Text) XPath.selectSingleNode(disk_element,
"//disk[@name='" + name + "']/files/text()"))
.getTextNormalize();
System.out.println("磁盘信息:");
System.out.println("分区盘符:" + name);
System.out.println("分区容量:" + capacity);
System.out.println("目录数:" + directories);
System.out.println("文件数:" + files);
System.out.println("-----------------------------------");
}
}
}