XML 文件的操作(六)jdom对xml文件做增加、修改、删除

<?xml version="1.0" encoding="gb2312"?>

<?xml-stylesheet type="text/xsl" href="students.xsl"?>

<students>
    <student sn="01">
        <name>张三</name>
        <age>18</age>
    </student>

    <student sn="02">
        <name>李四</name>
        <age>20</age>
    </student>
</students>

<?xml version="1.0" encoding="gb2312"?>
<?xml-stylesheet type="text/xsl" href="students.xsl"?>
<students>
<student sn="01">
<name>张三</name>
<age>18</age>
</student>
<student sn="02">
<name>李四</name>
<age>20</age>
</student>
</students>

JDOM对文件操作

package com.ibm.xml;

import java.io.File;
import java.io.IOException;

import org.jdom.*;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;


/**
 * JDOM对文件做增加、修改、删除
 * @author Administrator
 *
 */
public class JDOMConvert
{


    public static void main(String[] args)
    {
        SAXBuilder saxBuilder=new SAXBuilder();
        try
        {
            Document doc=saxBuilder.build(new File("students.xml"));

            Element eltStu=new Element("student");
            Element eltName=new Element("name");
            Element eltAge=new Element("age");

            eltName.setText("王五");
            eltAge.setText("19");

            eltStu.addContent(eltName);
            eltStu.addContent(eltAge);
            eltStu.setAttribute("sn","03");

            Element root=doc.getRootElement();
            root.addContent(eltStu);

            root.removeChild("student");

            root.getChild("student").getChild("age").setText("22");

            XMLOutputter xmlOut=new XMLOutputter();

            Format fmt=Format.getPrettyFormat();
            fmt.setIndent("    ");
            fmt.setEncoding("gb2312");

            xmlOut.setFormat(fmt);
            try
            {
                xmlOut.output(doc,System.out);
            }
            catch (IOException e)
            {
                // TODO 自动生成 catch 块
                e.printStackTrace();
            }

        }
        catch (JDOMException e)
        {
            // TODO 自动生成 catch 块
            e.printStackTrace();
        }
        catch (IOException e)
        {
            // TODO 自动生成 catch 块
            e.printStackTrace();
        }

    }

}