<?xml version="1.0" encoding="UTF-8"?>

<root>

    <product>

        <index id="1">交换机</index>

        <index id="2">传送网</index>

        <index id="3">WLAN</index>

        <index id="4">路由器</index>

    </product>

    <scene>

        <index id="1">规划</index>

        <index id="2">实施</index>

        <index id="3">维护</index>

    </scene>

</root>

package com.cy.test;

import java.io.File;

import java.net.URLDecoder;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import org.dom4j.Attribute;

import org.dom4j.Document;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

public class ReadXmlFile {

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

        String path = URLDecoder.decode(ReadXmlFile.class.getClassLoader().getResource("").getPath(), "UTF-8") + "product.xml";

        SAXReader reader = new SAXReader();

        Document  document = reader.read(new File(path)); 

        //获取文档的根节点

        Element root = document.getRootElement(); 

        //获取product的节点

        Element element = root.element("product");

        List<Element> proList = element.elements();

        for(Element e: proList){

            String value = e.getTextTrim();

            Attribute attr = e.attribute("id");

            String key = attr.getValue();

            System.out.println("key：" + key + "--value:" +value);

        }

        //获取scene节点

        Element sElement = root.element("scene");

        List<Element> sList = sElement.elements();

        for(Element e : sList){

            String value = e.getTextTrim();

            String key = e.attributeValue("id");

            System.out.println("key:" + key + "----value:" + value);

        }

        //将xml转化为map

        Map<Integer, String> prodcutMap = xml2Map(path);

        for (Map.Entry<Integer, String> entry : prodcutMap.entrySet()) {

            System.out.println("键= " + entry.getKey() + " and 值= " + entry.getValue());

        }

    }

    //将xml转化为map

    public static Map<Integer, String> xml2Map(String path) throws Exception{

        Map<Integer, String> productMap = new HashMap<Integer, String>();

        Document  document = new SAXReader().read(path);

        Element root = document.getRootElement();                             //获取根节点

        Iterator<Element> it = root.element("product").elementIterator();   //获取根节点下的子节点product下面的所有节点

        while(it.hasNext()){

            Element e = (Element) it.next();

            Integer key = Integer.parseInt(e.attributeValue("id"));

            String value = e.getTextTrim();

            productMap.put(key, value);

        }

        return productMap;

    }

}