XmlUtils.java

package cn.lnu.utils;

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

import org.dom4j.Document;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class XmlUtils {
	
	private static String filepath;
	static{//��̬����飬ִֻ��һ��
		//����ļ�users.xml��λ��
		filepath=XmlUtils.class.getClassLoader().getResource("users.xml").getPath();
	}
	//���xml�ĵ�
	public static Document getDocument() throws Exception{
		SAXReader reader = new SAXReader();
        Document document = reader.read(new File(filepath));
        return document;
	}
	//���ڴ����޸�֮�������д�ص�xml�ĵ���
	public static void writeToXml(Document document) throws IOException{
		 // Pretty print the document to System.out
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setEncoding("UTF-8");
        XMLWriter writer = new XMLWriter( new FileOutputStream(filepath), format );
        writer.write( document );
        writer.close();
	}
}