java将XML文档转换成json格式数据

功能

将xml文档转换成json格式数据

---

说明

依赖包：
1. jdom-2.0.2.jar : xml解析工具包;
2. fastjson-1.1.36.jar : 阿里巴巴研发的高性能json工具包

---

程序源代码

package com.xxx.open.pay.util;

import com.alibaba.fastjson.JSONObject;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.LinkedList;
import java.util.List;

/**
 * Created by [e-mail] on 2015/5/19.
 */
public class XmlUtil {
    public static JSONObject xml2JSON(byte[] xml) throws JDOMException, IOException {
        JSONObject json = new JSONObject();
        InputStream is = new ByteArrayInputStream(xml);
        SAXBuilder sb = new SAXBuilder();
        org.jdom2.Document doc = sb.build(is);
        Element root = doc.getRootElement();
        json.put(root.getName(), iterateElement(root));
        return json;
    }

    private static JSONObject iterateElement(Element element) {
        List node = element.getChildren();
        Element et = null;
        JSONObject obj = new JSONObject();
        List list = null;
        for (int i = 0; i < node.size(); i++) {
            list = new LinkedList();
            et = (Element) node.get(i);
            if (et.getTextTrim().equals("")) {
                if (et.getChildren().size() == 0)
                    continue;
                if (obj.containsKey(et.getName())) {
                    list = (List) obj.get(et.getName());
                }
                list.add(iterateElement(et));
                obj.put(et.getName(), list);
            } else {
                if (obj.containsKey(et.getName())) {
                    list = (List) obj.get(et.getName());
                }
                list.add(et.getTextTrim());
                obj.put(et.getName(), list);
            }
        }
        return obj;
    }

    public static void main(String[] args) throws JDOMException, IOException {
        String xml="<?xml version=\"1.0\" encoding=\"utf-8\" ?><MoBaoAccount MessageType=\"UserMobilePay\" PlatformID=\"b2ctest\"><OrderNo>M20150521084825</OrderNo><TradeAmt>5000.00</TradeAmt><Commission>0.5</Commission><UserID>zhuxiaolong</UserID><MerchID>zhuxiaolong1</MerchID><tradeType>0</tradeType><CustParam>123</CustParam> <NotifyUrl>http://mobaopay.com/callback.do</NotifyUrl><TradeSummary>订单</TradeSummary></MoBaoAccount>";
        JSONObject json=xml2JSON(xml.getBytes());
        System.out.println(json.toJSONString());
    }
}

---

执行结果

• XML原文：

<?xml version="1.0" encoding="utf-8" ?

>
<MoBaoAccount MessageType="UserMobilePay" PlatformID="b2ctest">
    <OrderNo>M20150521084825</OrderNo>
    <TradeAmt>5000.00</TradeAmt>
    <Commission>0.5</Commission>
    <UserID>xiaolong</UserID>
    <MerchID>xiaolong1</MerchID>
    <tradeType>0</tradeType>
    <CustParam>123</CustParam>
    <NotifyUrl>http://mobaopay.com/callback.do</NotifyUrl>
    <TradeSummary>订单</TradeSummary>
</MoBaoAccount>

• 转换后的json格式数据

{
    "MoBaoAccount": {
        "Commission": [
            "0.5"
        ],
        "CustParam": [
            "123"
        ],
        "MerchID": [
            "zhuxiaolong1"
        ],
        "NotifyUrl": [
            "http://mobaopay.com/callback.do"
        ],
        "OrderNo": [
            "M20150521084825"
        ],
        "TradeAmt": [
            "5000.00"
        ],
        "TradeSummary": [
            "订单"
        ],
        "UserID": [
            "zhuxiaolong"
        ],
        "tradeType": [
            "0"
        ]
    }
}