dom4j读取xml文件

 

xml version="1.0" encoding="UTF-8"?>
<config>
    <db-info>
        <driver-name>oracle.jdbc.driver.OracleDriverdriver-name>
        <url>jdbc:oracle:thin:@127.0.0.1:1521:orclurl>
        <user-name>scottuser-name>
        <password>tigerpassword>
    db-info>
config>

XmlConfigReader.java

 

package com.lcw.drp.util;
import java.io.File;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;

/**
 * 读取sys-config.xml文件
 * @author Administrator
 *
 */
public class XmlConfigReader {
    String driverName;
    String url;
    String userName;
    String password;

    XmlConfigReader() {
            readXml();
    }

    public void readXml(){
        SAXReader reader = new SAXReader();
        Document doc = null;
        try {
            doc = reader.read(new File("src/com/lcw/drp/util/sys-config.xml"));
        } catch (DocumentException e) {
            e.printStackTrace();
        }

        //1.取特定的节点
        Node node = null;
        node = doc.selectSingleNode("//config/db-info/driver-name");
        driverName = node.getText();
        node = doc.selectSingleNode("//config/db-info/url");
        url = node.getText();
        node = doc.selectSingleNode("//config/db-info/user-name");
        userName = node.getText();
        node = doc.selectSingleNode("//config/db-info/password");
        password = node.getText();


        Element rootElem = doc.getRootElement();
        //2.取特定的节点
        List list = doc.selectNodes("//config/db-info");
        for(Node n : list) {
            System.out.println(n.getName());
        }


        //3.取节点再取节点的内容
        for ( Iterator i = rootElem.elementIterator(); i.hasNext(); ) {
           Element element = (Element) i.next();
           for(Iterator j = element.elementIterator(); j.hasNext();) {
               Element elem = (Element) j.next();
               System.out.println("        " + elem.getName() + "----"+ elem.getData());
           }
           //用Attribute时候不能运行，待解决
 //        for(Iterator j = element.attributeIterator(); j.hasNext();) {
 //            Attribute attribute = (Attribute) j.next();
 //            System.out.println("        " + attribute.getName() + "----"+ attribute.getValue());
 //         }
        }
    }
}