XML转JSON工具类

原文地址：http://blog.csdn.net/lovesummerforever/article/details/26396465

1.pom依赖

        <dependency>
            <groupId>org.jdom</groupId>
            <artifactId>jdom</artifactId>
            <version>2.0.2</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.39</version>
        </dependency>

2.代码

public class Xml2JsonUtil { 
    
    /** 
     * 转换一个xml格式的字符串到json格式 
     *  
     * @param xml 
     *            xml格式的字符串 
     * @return 成功返回json 格式的字符串;失败反回null 
     */  
    public static  String xml2JSON(String xml) {  
        JSONObject obj = new JSONObject();  
        try {  
            InputStream is = new ByteArrayInputStream(xml.getBytes("utf-8"));  
            SAXBuilder sb = new SAXBuilder();  
            Document doc = sb.build(is);  
            Element root = doc.getRootElement();  
            obj.put(root.getName(), iterateElement(root));  
            return obj.toString();  
        } catch (Exception e) {  
            e.printStackTrace();  
            return null;  
        }  
    }  
  
    /** 
     * 转换一个xml格式的字符串到json格式 
     *  
     * @param file 
     *            java.io.File实例是一个有效的xml文件 
     * @return 成功反回json 格式的字符串;失败反回null 
     */  
    public static String xml2JSON(File file) {  
        JSONObject obj = new JSONObject();  
        try {  
            SAXBuilder sb = new SAXBuilder();  
            Document doc = sb.build(file);  
            Element root = doc.getRootElement();  
            obj.put(root.getName(), iterateElement(root));  
            return obj.toString();  
        } catch (Exception e) {  
            e.printStackTrace();  
            return null;  
        }  
    }  
  
    /** 
     * 一个迭代方法 
     *  
     * @param element 
     *            : org.jdom.Element 
     * @return java.util.Map 实例 
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    private static Map  iterateElement(Element element) {  
        List jiedian = element.getChildren();  
        Element et = null;  
        Map obj = new HashMap();  
        List list = null;  
        for (int i = 0; i < jiedian.size(); i++) {  
            list = new LinkedList();  
            et = (Element) jiedian.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;  
    }
  
    // 测试  
    public static void main(String[] args) {
        String xml  = "<xml><version><![CDATA[2.0]]></version><charset><![CDATA[UTF-8]]></charset><status><![CDATA[400]]></status><message><![CDATA[Require POST method]]></message></xml>";
        System.out.println(Xml2JsonUtil.xml2JSON(xml));  
    }  
}  

3.运行结果（手动格式化了的）

{
    "xml":{
        "charset":[
            "UTF-8"
        ],
        "message":[
            "Require POST method"
        ],
        "version":[
            "2.0"
        ],
        "status":[
            "400"
        ]
    }
}