dom4j操作XML

public class XmlUtils {

private static String filename = "users.xml";//模拟数据库

public static Document getDocument() throws DocumentException{

URL url = XmlUtils.class.getClassLoader().getResource(filename);

String realpath = url.getPath();

SAXReader reader = new SAXReader();

return reader.read(new File(realpath));//返回Document对象

}

public static void write2Xml(Document document) throws IOException{

URL url = XmlUtils.class.getClassLoader().getResource(filename);

String realpath = url.getPath();

OutputFormat format = OutputFormat.createPrettyPrint();

XMLWriter writer = new XMLWriter(new FileOutputStream(realpath), format );

        writer.write( document );//向Document对象中写入数据

        writer.close();

}

}