采用json-lib进行Map与Json转换

????/**
	?????*?该字符串可能转为?JSONObject?或?JSONArray
	?????*?@param?string
	?????*?@return
	?????*/
	????public?static?boolean?mayBeJSON(String?string)?{
			return?((string?!=?null)?&&?((("null".equals(string))
					||?((string.startsWith("["))?&&?(string.endsWith("]")))?||?((string
					.startsWith("{"))?&&?(string.endsWith("}"))))));
		}
	????
	????/**
	?????*?该字符串可能转为JSONObject
	?????*?@param?string
	?????*?@return
	?????*/
	????public?static?boolean?mayBeJSONObject(String?string)?{
			return?((string?!=?null)?&&?((("null".equals(string))
					?||?((string.startsWith("{"))?&&?(string.endsWith("}"))))));
		}
	????
	????/**
	?????*?该字符串可能转为?JSONArray
	?????*?@param?string
	?????*?@return
	?????*/
	????public?static?boolean?mayBeJSONArray(String?string)?{
			return?((string?!=?null)?&&?((("null".equals(string))
					||?((string.startsWith("["))?&&?(string.endsWith("]"))))));
		}

?/**
	??*函数注释：parseJSON2Map()<br>
	??*时间：2014-10-28-上午10:50:21<br>
	??*用途：该方法用于json数据转换为<Map<String,?Object>
	??*@param?jsonStr
	??*@return
	??*/
	????public?static?Map<String,?Object>?parseJSON2Map(String?jsonStr){??
	????????Map<String,?Object>?map?=?new?HashMap<String,?Object>();??
	????????//最外层解析??
	????????JSONObject?json?=?JSONObject.fromObject(jsonStr);??
	????????for(Object?k?:?json.keySet()){??
	????????????Object?v?=?json.get(k);???
	????????????//如果内层还是数组的话，继续解析??
	????????????if(v?instanceof?JSONArray){??
	????????????????List<Map<String,?Object>>?list?=?new?ArrayList<Map<String,Object>>();??
	????????????????Iterator<JSONObject>?it?=?((JSONArray)v).iterator();??
	????????????????while(it.hasNext()){??
	????????????????????JSONObject?json2?=?it.next();??
	????????????????????list.add(parseJSON2Map(json2.toString()));??
	????????????????}??
	????????????????map.put(k.toString(),?list);??
	????????????}?else?{??
	????????????????map.put(k.toString(),?v);??
	????????????}??
	????????}??
	????????return?map;??
	????}??
	????
	????/**
??????????????*?函数注释：parseJSON2MapString()<br>
	??????*?用途：该方法用于json数据转换为<Map<String,?String><br>
	??????*?备注：***<br>?
	??????*/
	????public?static?Map<String,?String>?parseJSON2MapString(String?jsonStr){??
	????????Map<String,?String>?map?=?new?HashMap<String,?String>();??
	????????//最外层解析??
	????????JSONObject?json?=?JSONObject.fromObject(jsonStr);??
	????????for(Object?k?:?json.keySet()){?
	????????????Object?v?=?json.get(k);???
	????????????if(null!=v){
	????????????	map.put(k.toString(),?v.toString());??
	????????????}
	????????}??
	????????return?map;??
	????}

/**
	?*函数注释：parseJSON2List()<br>
	?*用途：该方法用于json数据转换为List<Map<String,?Object>><br>
	?*/
	?public?static?List<Map<String,?Object>>?parseJSON2List(String?jsonStr){??
	????????JSONArray?jsonArr?=?JSONArray.fromObject(jsonStr);??
	????????List<Map<String,Object>>();??
	????????Iterator<JSONObject>?it?=?jsonArr.iterator();??
	????????while(it.hasNext()){??
	????????????JSONObject?json2?=?it.next();??
	????????????list.add(parseJSON2Map(json2.toString()));??
	????????}??
	????????return?list;??
	????}
	?
	/**
	*?函数注释：parseJSON2ListString()<br>
	*?用途：该方法用于json数据转换为List<Map<String,?String>><br>
	*/
	?public?static?List<Map<String,?String>>?parseJSON2ListString(String?jsonStr){??
		????????JSONArray?jsonArr?=?JSONArray.fromObject(jsonStr);??
		????????List<Map<String,?String>>?list?=?new?ArrayList<Map<String,String>>();??
		????????Iterator<JSONObject>?it?=?jsonArr.iterator();??
		????????while(it.hasNext()){??
		????????????JSONObject?json2?=?it.next();??
		????????????list.add(parseJSON2MapString(json2.toString()));??
		????????}??
		????????return?list;??
		????}

JSONObject.fromObject（obj）.toString();
JSONArray.fromObject（obj）.toString();

net.sf.json.JSONException:?Unquotted?string