xml解析工具类

package com.framework.loippi.utils.yinliang;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.json.JSONObject;
import org.json.XML;

import java.io.ByteArrayInputStream;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * <p>
 * xml工具类
 * </p>
 *
 * @date 2019/12/5 17:40
 */
public class XmlUtil {

    //编码
    private static final String charsetName = "GBK";

    /**
     * 获取内容-递归
     */
    private static Map<String, Object> getContentMap(Element root, Iterator it) {
        Map<String, Object> rootMap = new HashMap<>();
        Map<String, Object> nextRootMap = new HashMap<>();
        while (it.hasNext()) {
            Element nextRoot = (Element) it.next();
            Iterator nextIt = nextRoot.elementIterator();
            if (nextIt.hasNext()) {
                //当前xml标签下，存嵌套了其他标签
                Map<String, Object> nextContentMap = getContentMap(nextRoot, nextIt);
                nextRootMap.putAll(nextContentMap);
            } else {
                //当前xml标签下，只有值，未嵌套其他标签
                nextRootMap.put(nextRoot.getName(), nextRoot.getTextTrim());
            }
        }
        rootMap.put(root.getName(), nextRootMap);
        return rootMap;
    }

    /**
     * xml转map
     *
     * @param xml xml字符串
     * @return map对象
     */
    public static Map<String, Object> xmlToMap(String xml) {
        try {
            SAXReader reader = new SAXReader();
            String xmlStr = reader.read(new ByteArrayInputStream(xml.getBytes(charsetName))).asXML();
            Document document = DocumentHelper.parseText(xmlStr);
            Element root = document.getRootElement();
            Iterator it = root.elementIterator();
            //递归 xml转 map
            return getContentMap(root, it);
        } catch (DocumentException | UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * map转xml
     *
     * @param map map参数值
     * @return xml字符串
     */
    public static String mapToXml(Map<String, Object> map) {
        JSONObject json = new JSONObject(map);
        return "<?xml version=\"1.0\" encoding=\""+charsetName+"\"?>" + XML.toString(json);
    }

    /**
     * xml转json
     *
     * @param xmlString xml字符串
     * @return JSONObject对象
     */
    public static JSONObject xmlToJSONObject(String xmlString) {
        return XML.toJSONObject(xmlString);
    }
}