package XML.Class;

import org.dom4j.Document;

import org.dom4j.DocumentException;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

/**

* @authtor liFei

* @date 2020/6/22-19:51

*/

public class SysConfigParser {

public static void main(String[] args) throws DocumentException {

//创建解析器

SAXReader reader = new SAXReader();

//通过解析器的reader将配置文件读取到内存中,生成一个Document[org.dom4j]对象树

Document document=reader.read("D:\\Practice\\JavaWeb\\src\\XML\\xml\\sys-config.xml");

//driver-name结点元素的路径 config->database-info->driver-name

//driver-name结点元素的xpath路径：/config/database-info/driver-name

Element driverNameElt =(Element) document.selectSingleNode("/config/database-info/driver-name");

//获取driverNameElt结点元素对象的文本内容

String driverName= driverNameElt.getStringValue();

System.out.println(driverName);

//url结点元素路径：config->database-info->url

//url结点元素的xpath路径：/config/database-info/url 或者//url 或者 config//url

Element urlNameElt =(Element) document.selectSingleNode("config//url");

//获取driverNameElt结点元素对象的文本内容

String urlName= urlNameElt.getStringValue();

System.out.println(urlName);

//user结点元素路径：config->database-info->user

//url结点元素的xpath路径：/config/database-info/user 或者//user 或者 config//user

Element uesrNameElt =(Element) document.selectSingleNode("//uesr");

//获取driverNameElt结点元素对象的文本内容

String uesrName= uesrNameElt.getStringValue();

System.out.println(uesrName);

//该方法也可以

//Element element=(Element) document.selectObject("//uesr");

//System.out.println(element.getStringValue());

//password结点元素路径：config->database-info->password

//password结点元素的xpath路径：/config/database-info/password 或者//password 或者 config//password

Element element=(Element) document.selectObject("//password");

System.out.println(element.getStringValue());

}

}