jsonarray的用法_jsonarray转string数组「建议收藏」

一 JSONArray 添加 JSONObject

1 语法:  
	JSONArray.add(JSONObject);
2 格式: 
      [{
            "key": "value",
            "key": "value",
            ...
       }]

举例:

    JSONArray  array = new JSONArray();
        
    //从数据库获取packageOrderList
    List<packageOrderDto> packageOrderList = packageOrderMybatis.getPackageOrderList(page,size,keyword);
    
    for(packageOrderDto dto: packageOrderList ){ 
   
        JSONObject obj = new JSONObject();
        obj.put("orderId", dto.getOrderId());
        obj.put("packageId", dto.getPackageId);
        obj.put("startTime", dto.getStartTime());
        obj.put("packageName",dto.getPackageName);
        obj.put("endTime",dto.getEndTime());
        obj.put("userId",dto.getUserId());
        array.add(obj);
    }
    System.out.println(array);

 结果:

    "packageOrderList": [
        {
            "orderId": "3599192499316",
            "packageId": "9dcf693021904ff9939d5",
            "startTime": "2019-03-11 00:00:00",
            "packageName": "云存储",
            "endTime": "2019-04-30 00:00:00",
            "userId": 152XXXXXXXX
        }
    ]

二 JSONObject 添加 JSONArray

1 语法:   
	JSONObject.put(JSONArray);
2 格式:  
        "key": {
            "key":[ 
            	{“key”：value},
            	{“key”：value},
            	...
            ]
        }

举例:

   JSONObject cameraObj= new JSONObject();
   JSONArray  array = new JSONArray();

   String macType ="HMC-1"    ;
   String macId = "200059441003";

   PackageOrderDto packageDto = new PackageOrderDto();
   packageDto.setPackageId("001");
   packageDto.setOrderId("套餐001");

   PackageOrderDto packageDto2 = new PackageOrderDto();
   packageDto2.setPackageId("002");
   packageDto2.setOrderId("套餐002");

   List<PackageOrderDto> packageOrderDtoList = new ArrayList<>();
   packageOrderDtoList.add(packageDto);
   packageOrderDtoList.add(packageDto2);
   for(PackageOrderDto dto: packageOrderDtoList ){ 
   
       JSONObject obj = new JSONObject();
       obj.put("packageId", dto.getPackageId());
       obj.put("orderId",dto.getOrderId());
       array.add(obj);
   }

   cameraObj.put("macType",macType);
   cameraObj.put("macId", macId);
   cameraObj.put("packageOrderList",array);

   System.out.println(cameraObj);

结果:

    {
        "macType": "HMC-1",
        "macId": "200059441003",
        "packageOrderList": [{
            "packageId": "001",
            "orderId": "套餐001"
        }, {
            "packageId": "002",
            "orderId": "套餐002"
        }]
    }
               
            

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