解析json数据

String result= HttpRequest.post(serverConfig.getIp()+ ":" + serverConfig.getPort() + "/sitelevel/electricity/statistical/searchwaterUseDataConsumption")
		.headerMap(headerMap,true)
		.body(JSON.toJSONString(paramMap),ContentType.JSON.getValue())
		.timeout(20000)//超时，毫秒
		.execute().body();
	EnergyApiCallback> callback = JSONObject.parseObject(result, new TypeReference>>(){});
	if(callback!=null && callback.getCode() == 200){
		return callback.getData();
	}else{
		return null;
	}

public class EnergyApiCallback {
	 private String msg;
     private Integer code;
   	 private T data;
     private Object params;
}