2 D配列をjsonに変換

 ：        1,    ,123,321,1,    ,123,321
/** 
     *js   json 
     * 
     */  
    function arrayToJson(o) {   
    var r = [];   
    if (typeof o == "string") return "\"" + o.replace(/([\'\"\\])/g, "\\$1").replace(/(
)/g, "\
").replace(/(\r)/g, "\\r").replace(/(\t)/g, "\\t") + "\"";   
    if (typeof o == "object") {   
    if (!o.sort) {   
    for (var i in o)   
    r.push(i + ":" + arrayToJson(o[i]));   
    if (!!document.all && !/^
?function\s*toString\(\)\s*\{
?\s*\[native code\]
?\s*\}
?\s*$/.test(o.toString)) {   
    r.push("toString:" + o.toString.toString());   
    }   
    r = "{" + r.join() + "}";   
    } else {   
    for (var i = 0; i < o.length; i++) {   
    r.push(arrayToJson(o[i]));   
    }   
    r = "[" + r.join() + "]";   
    }   
    return r;   
    }   
    return o.toString();   
    }  
   JS           [["1","    ","123","321"],["1","    ","123","321"]]
   Java          ，            
JSON      jar ：
    ：http://code.alibabatech.com/svn/fastjson/repository/com/alibaba/fastjson/1.0.4/fastjson-1.0.4.jar


	public List JsonToList(String arr){
		List relReceiveFaultList = new ArrayList<RelChecklistFault>();
		com.alibaba.fastjson.JSONArray mainArray=JSON.parseArray(arr);  
		 for(int i=0;i< mainArray.size();i++){  
			 log.info("    :"+mainArray.size()); 
	           com.alibaba.fastjson.JSONArray paramObject=(com.alibaba.fastjson.JSONArray)mainArray.get(i);  
	           RelChecklistFault  relChecklistFault= new RelChecklistFault();
	           relChecklistFault.setFaultType(paramObject.get(0).toString());
	           relChecklistFault.setFaultSymptom(paramObject.get(1).toString());
	           relChecklistFault.setFaultCause(paramObject.get(2).toString());
	           relChecklistFault.setSuggest(paramObject.get(3).toString());
			  relReceiveFaultList.add(relChecklistFault);
	       }  
		return relReceiveFaultList;
	}