导入依赖

        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>1.6.1</version>
        </dependency>

工具类


import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

import org.dom4j.*;

import java.io.File;
import java.io.FileInputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.List;
import java.util.logging.Logger;

/**
 * xml转换json工具类
 * @Author: LiuYong
 * @Date:2019/12/11 10:00
 * @Description: TODO xml转换json工具类
 */

public class XmlToJsonUtils {
    private static Logger logger = Logger.getLogger(XmlToJsonUtils.class.getName());

    public static void main(String[] args) throws Exception {
        String xml ="<xml>\n" +
                "<appid>wx2421b1c4370ec43b</appid>\n" +
                "<attach><![CDATA[att1]]></attach>\n" +
                "<body><![CDATA[JSAPI支付测试]]></body>\n" +
                "<device_info>1000</device_info>\n" +
                "<mch_id>10000100</mch_id>\n" +
                "<nonce_str>b927722419c52622651a871d1d9ed8b2</nonce_str>\n" +
                "<notify_url>http://wxpay.weixin.qq.com/pub_v2/pay/notify.php</notify_url>\n" +
                "<out_trade_no>1405713376</out_trade_no>\n" +
                "<spbill_create_ip>127.0.0.1</spbill_create_ip>\n" +
                "<total_fee>1</total_fee>\n" +
                "<trade_type>JSAPI</trade_type>\n" +
                "<sign><![CDATA[3CA89B5870F944736C657979192E1CF4]]></sign>\n" +
                "</xml>";
        String s = xmlToJson(xml);
        System.out.println(s);
        JSONObject jsonObject = xml2Json(xml);
        System.out.println(jsonObject);

    }

    /**
     * xml字符串转json字符串
     * @Author LiuYong
     * @Date 2019/12/11 10:06
     * @Description TODO
     * @param xml
     * @return String
     **/
    public static String xmlToJson(String xml) {
        Document doc;
        try {
            doc = DocumentHelper.parseText(xml);
            JSONObject json = new JSONObject();
            dom4j2Json(doc.getRootElement(), json);
            return json.toJSONString();
        } catch (DocumentException e) {
            logger.info("数据解析失败");
        }
        return null;

    }

    /**
     * 根据xml文件路径转换json字符串
     * @Author LiuYong
     * @Date 2019/12/11 10:06
     * @Description TODO
     * @param path
     * @return String
     **/
    public static String readFile(String path) throws Exception {
        File file = new File(path);
        FileInputStream fis = new FileInputStream(file);
        FileChannel fc = fis.getChannel();
        ByteBuffer bb = ByteBuffer.allocate(new Long(file.length()).intValue());
        /**fc向buffer中读入数据*/
        fc.read(bb);
        bb.flip();
        String str = new String(bb.array(), "UTF8");
        fc.close();
        fis.close();
        return str;

    }

    /**
     * xml转json
     *
     * @param xmlStr
     * @return
     * @throws DocumentException
     */
    public static JSONObject xml2Json(String xmlStr) throws DocumentException {
        Document doc = DocumentHelper.parseText(xmlStr);
        JSONObject json = new JSONObject();
        dom4j2Json(doc.getRootElement(), json);
        return json;
    }

    /**
     * xml转json
     * @Author LiuYong
     * @Date 2019/12/11  10:07
     * @Description TODO
     * @param element
     * @param json 外部接收json对象
     **/
    public static void dom4j2Json(Element element, JSONObject json) {
        /**如果是属性*/
        for (Object o : element.attributes()) {
            Attribute attr = (Attribute) o;
            if (!isEmpty(attr.getValue())) {
                json.put("@" + attr.getName(), attr.getValue());
            }
        }
        List<Element> chdEl = element.elements();
        /**如果没有子元素,只有一个值*/
        if (chdEl.isEmpty() && !isEmpty(element.getText())) {
            json.put(element.getName(), element.getText());
        }
        /**有子元素*/
        for (Element e : chdEl) {
            /**子元素存在子元素*/
            if (!e.elements().isEmpty()) {
                JSONObject chdjson = new JSONObject();
                dom4j2Json(e, chdjson);
                Object o = json.get(e.getName());
                if (o != null) {
                    JSONArray jsona = null;
                    /**如果此元素已存在,则转为jsonArray*/
                    if (o instanceof JSONObject) {
                        JSONObject jsono = (JSONObject) o;
                        json.remove(e.getName());
                        jsona = new JSONArray();
                        jsona.add(jsono);
                        jsona.add(chdjson);
                    }
                    if (o instanceof JSONArray) {
                        jsona = (JSONArray) o;
                        jsona.add(chdjson);
                    }
                    json.put(e.getName(), jsona);
                } else {
                    if (!chdjson.isEmpty()) {
                        json.put(e.getName(), chdjson);
                    }
                }

            } else {
                /**子元素没有子元素*/
                for (Object o : element.attributes()) {
                    Attribute attr = (Attribute) o;
                    if (!isEmpty(attr.getValue())) {
                        json.put("@" + attr.getName(), attr.getValue());
                    }
                }
                if (!e.getText().isEmpty()) {
                    json.put(e.getName(), e.getText());
                }
            }
        }
    }

    /**
     * 是否为null
     * @Author LiuYong
     * @Date 2019/12/11 10:28
     * @Description TODO
     * @param
     * @return
     **/
    public static boolean isEmpty(String str) {

        if (str == null || str.trim().isEmpty() || str.equals("null")) {
            return true;
        }
        return false;
    }

}

xml转换json工具类

导入依赖

工具类

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