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

 1 public class Xml2JsonUtil { 
 2     
 3     /** 
 4      * 转换一个xml格式的字符串到json格式 
 5      *  
 6      * @param xml 
 7      *            xml格式的字符串 
 8      * @return 成功返回json 格式的字符串;失败反回null 
 9      */  
10     public static  String xml2JSON(String xml) {  
11         JSONObject obj = new JSONObject();  
12         try {  
13             InputStream is = new ByteArrayInputStream(xml.getBytes("utf-8"));  
14             SAXBuilder sb = new SAXBuilder();  
15             Document doc = sb.build(is);  
16             Element root = doc.getRootElement();  
17             obj.put(root.getName(), iterateElement(root));  
18             return obj.toString();  
19         } catch (Exception e) {  
20             e.printStackTrace();  
21             return null;  
22         }  
23     }  
24   
25     /** 
26      * 转换一个xml格式的字符串到json格式 
27      *  
28      * @param file 
29      *            java.io.File实例是一个有效的xml文件 
30      * @return 成功反回json 格式的字符串;失败反回null 
31      */  
32     public static String xml2JSON(File file) {  
33         JSONObject obj = new JSONObject();  
34         try {  
35             SAXBuilder sb = new SAXBuilder();  
36             Document doc = sb.build(file);  
37             Element root = doc.getRootElement();  
38             obj.put(root.getName(), iterateElement(root));  
39             return obj.toString();  
40         } catch (Exception e) {  
41             e.printStackTrace();  
42             return null;  
43         }  
44     }  
45   
46     /** 
47      * 一个迭代方法 
48      *  
49      * @param element 
50      *            : org.jdom.Element 
51      * @return java.util.Map 实例 
52      */
53     @SuppressWarnings({ "rawtypes", "unchecked" })
54     private static Map  iterateElement(Element element) {  
55         List jiedian = element.getChildren();  
56         Element et = null;  
57         Map obj = new HashMap();  
58         List list = null;  
59         for (int i = 0; i < jiedian.size(); i++) {  
60             list = new LinkedList();  
61             et = (Element) jiedian.get(i);  
62             if (et.getTextTrim().equals("")) {  
63                 if (et.getChildren().size() == 0)  
64                     continue;  
65                 if (obj.containsKey(et.getName())) {  
66                     list = (List) obj.get(et.getName());  
67                 }  
68                 list.add(iterateElement(et));  
69                 obj.put(et.getName(), list);  
70             } else {  
71                 if (obj.containsKey(et.getName())) {  
72                     list = (List) obj.get(et.getName());  
73                 }  
74                 list.add(et.getTextTrim());  
75                 obj.put(et.getName(), list);  
76             }  
77         }  
78         return obj;  
79     }
80   
81     // 测试  
82     public static void main(String[] args) {
83         String xml  = "<xml><version><![CDATA[2.0]]></version><charset><![CDATA[UTF-8]]></charset><status><![CDATA[400]]></status><message><![CDATA[Require POST method]]></message></xml>";
84         System.out.println(Xml2JsonUtil.xml2JSON(xml));  
85     }  
86 }

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"
        ]
    }
}