dom4j解析xml报文

package com.answern.claimv2.service.utils;

import com.alibaba.dubbo.common.utils.IOUtils;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import java.io.File;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class XmlUtil {
    public Map<String,Object> map = new HashMap<>();
    public Map parse(String soap) throws DocumentException {
        Document doc = DocumentHelper.parseText(soap);//报文转成doc对象
        Element root = doc.getRootElement();//获取根元素，准备递归解析这个XML树
        getCode(root);
        return map;
    }

    public void getCode(Element root) {
        if (root.elements() != null) {
            List<Element> list = root.elements();//如果当前跟节点有子节点，找到子节点
            for (Element e : list) {//遍历每个节点
                if (e.elements().size() > 0) {
                    getCode(e);//当前节点不为空的话，递归遍历子节点；
                }
                if (e.elements().size() == 0) {
                    map.put(e.getName(), e.getTextTrim());
                }//如果为叶子节点，那么直接把名字和值放入map
            }
        }
    }

    public static void main(String[] args) throws Exception{
        String[] strings = IOUtils.readLines(new File("C:\\Users\\Administrator\\Desktop\\返回报文.xml"));
        StringBuffer sb = new StringBuffer();
        for (String s : strings){
            sb.append(s);
        }
        //初始化报文，调用parse方法，获得结果map，然后按照需求取得字段，或者转化为其他格式
        Map map = new XmlUtil().parse(sb.toString());
        System.out.println(map.get("response_code"));

    }
}

<PACKET>
  <responsehead>
    <response_code>1</response_code>
    <error_message>成功!</error_message>
  </responsehead>
  <responsebody></responsebody>
</PACKET>