Java工具类：将xml转为Json

一、场景

在对接第三方接口时，由于接口返回的并不是常见的Json，而是XML，所以需要将XML转为Json，方便后续处理

二、工具类

package com.xxx.util;

import org.apache.commons.lang.StringUtils;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import java.io.ByteArrayInputStream;
import java.util.List;

/**
 * @author hcs
 * 
 * @date 2024/1/19 10:55
 */
public class XmlConverToJsonUtil {

    /**
     * 将xml转为json
     * 
     * @param xml
     * @return
     */
    public static com.alibaba.fastjson.JSONObject xmlConversionToJSON(String xml) {
        System.out.println("要转换的XML：\n" + xml);

        if (StringUtils.isBlank(xml)) {
            return null;
        }

        Document document = null;
        Element root = null;
        List<Element> elementList = null;
        List<Element> parantList = null;
        List<Element> childList = null;
        SAXReader reader = null;

        try {
            reader = new SAXReader();
            try {
                document = reader.read(new ByteArrayInputStream(xml.getBytes(Constant.default_encoding)));
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            }

            root = document.getRootElement();
            elementList = root.elements();

            com.alibaba.fastjson.JSONObject map = new com.alibaba.fastjson.JSONObject();

            for (Element e : elementList) {
                String strName = e.getName();
                //map.put(strName, e.getText());
                map.put(strName, getElementValue(e, new com.alibaba.fastjson.JSONObject()));
            }
            return map;
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            document = null;
            root = null;
            if (elementList != null) {
                elementList.clear();
            }
            elementList = null;
            if (parantList != null) {

                parantList.clear();
            }
            parantList = null;
            if (childList != null) {
                childList.clear();
            }
            childList = null;
            reader = null;
        }
        return null;
    }

    /**
     * 遍历，获取元素值
     * 
     * @param e
     * @param map
     * @return
     */
    private static Object getElementValue(Element e, com.alibaba.fastjson.JSONObject map){
        List<Element> elements = e.elements();
        if (elements == null || elements.size() < 1) {
            return e.getText();
        } else {
            for (Element element : elements) {
                List elements2 = element.elements();
                if (elements2 == null || elements2.size() < 1) {
                    map.put(element.getName(), element.getText());
                } else {
                    map.put(element.getName(), getElementValue(element, new com.alibaba.fastjson.JSONObject()));
                }
            }
            return map;
        }
    }
}

三、测试类

package com.xxx;

import com.xxx.util.XmlConverToJsonUtil;

public class XmlTest {
    public static void main(String[] args) {
        String xmlStr = "<USER_INFO>\n" +
                "\t<NAME>张三</NAME>\n" +
                "\t<COMPANY>XXX股份有限公司</COMPANY>\n" +
                "\t<AUDIT_STATUS>3</AUDIT_STATUS>\n" +
                "\t<REGISTRANT>张三</REGISTRANT>\n" +
                "\t<PHONE_NUMBER>12345678901</PHONE_NUMBER>\n" +
                "\t<MAILBOX></MAILBOX>\n" +
                "\t<USER_GUID>eee-ddd-ccc-bbb-aaa</USER_GUID>\n" +
                "\t<SOURCE_APP_CODE>AAA</SOURCE_APP_CODE\n" +
                "\t><EXPERT_GRADE></EXPERT_GRADE>\n" +
                "</USER_INFO>";

        System.out.println("\n转为JSON对象：\n" + XmlConverToJsonUtil.xmlConversionToJSON(xmlStr));
    }
}

四、测试结果