json xml转换 java json转为xml

这几天需要JSON与XML之间转换的工具类，网上搜了好多都不是自己需要的，于是自己编写了一个。

一、JSON转XML

（1）JSONbean 转换成XML

public class People {
	People(int id,String name){
		this.id = id;
		this.name = name;
	}
	private int id;
	private String name;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	
}

JSONbean方法：

/**
    * JsonObject转换成xml
    * 
    * @param json
    * @return
    */
	public static String JsonBean2XmlString(JSONObject json){
		System.out.println("JsonBean转换成xml:");
		System.out.println("json:"+json);
		StringBuffer sb = new StringBuffer("<xml><p>");
    	for(Object key : json.keySet()){
    		sb.append("<").append(key).append(">");
    		Object value = json.get(key);
    		//判断value是否含有JSONArray
    		JSONObject jsonV = ((JSONObject)value);
    		for(Object key2 : jsonV.keySet()){
    			sb.append("<").append(key2).append(">");
    			Object value2 = jsonV.get(key2);
    			sb.append(value2);
    			sb.append("</").append(key2).append(">");
    		}
    		sb.append("</").append(key).append(">");
    	}
    	sb.append("</p></xml>");
    	return sb.toString();
    }

main测试：

JSONObject json = new JSONObject();		
        People p = new People(9203,"xiaobao");
        People p2 = new People(943,"xiaoxiao");
        json.put("p1", p);
        json.put("p2", p2);
	System.out.println(JsonBean2XmlString(json));

测试输出结果：

JsonBean转换成xml:
json:{"p1":{"id":9203,"name":"xiaobao"},"p2":{"id":943,"name":"xiaoxiao"}}
<xml><p><p1><id>9203</id><name>xiaobao</name></p1><p2><id>943</id><name>xiaoxiao</name></p2></p></xml>

（2）多层嵌套的JSON转换

如：{"p":{"p1":{"p2":{"id":2222,"name":"xiao2"}},"name":"xiao3"},"id2":"iii","name2":"ffff"}

/**
     * Json多层数据结构转换成xml
     * @param json
     * @return
     */
 	public static String Json2XmlString(String jsonStr){
 		System.out.println("json转换成xmlString:");
 		JSONObject json = JSONObject.fromObject(jsonStr);
 		StringBuffer sb = new StringBuffer("<xml>");
     	for(Object key : json.keySet()){
     		sb.append("<").append(key).append(">");     		
     		Object value = json.get(key);
     		sb.append(iteraorJson(value));
     		sb.append("</").append(key).append(">");
     	}
     	sb.append("</xml>");
     	return sb.toString();
     }
 	/**
 	 * 迭代判断value是否还包含jSONObject
 	 * @param value
 	 * @return
 	 */
 	public static String iteraorJson(Object value){
 		StringBuffer sb = new StringBuffer("");
 		if((value.toString().contains(":"))){
 			JSONObject json = ((JSONObject)value);
 			for(Object key : json.keySet()){
    			sb.append("<").append(key).append(">");
    			Object value2 = json.get(key);
    			sb.append(iteraorJson(value2));
    			sb.append("</").append(key).append(">");
    		} 			
 		}else{
 			sb.append(value);
 		} 		
 		return sb.toString();
 	}

测试：

String jsonStr = "{\"p\":{\"p1\":{\"p2\":{\"id\":2222,\"name\":\"xiao2\"}},\"name\":\"xiao3\"},\"id2\":\"iii\",\"name2\":\"ffff\"}";
		System.out.println("jsonStr:"+jsonStr);
		System.out.println(Json2XmlString(jsonStr));

结果输出：

jsonStr:{"p":{"p1":{"p2":{"id":2222,"name":"xiao2"}},"name":"xiao3"},"id2":"iii","name2":"ffff"}
json转换成xmlString:
<xml><p><p1><p2><id>2222</id><name>xiao2</name></p2></p1><name>xiao3</name></p><id2>iii</id2><name2>ffff</name2></xml>