使用rfc4627

Question

这是我运行以下2条命令后得到的输出。

Wc = os:cmd("curl -s -k -X GET 'http://10.210.12.158:10065/iot/get/task_id?id=1'"),
    WW = decode_json(Wc), 

输出---

{ok,{obj,[{"status",200},
    {"data",
        [{obj,[{"id",1},
           {"task",
                <<"Turn on the bulb when the temperature is greater than 28 ">>},
           {"working_condition",1},
           {"depending_value",<<"Temperature">>},
           {"device",<<" BulbOnly">>},
           {"turning_point",28},
           {"config_id",null}]}]}]}}

我想分别获取这些数据。

例如-任务=温度高于28时打开灯泡

那么，我该怎么做？

Answer 1

返回的结构似乎返回一个任务列表，并且每个任务都是一个属性列表，您可以执行类似的操作

-module(test).
-export([input/0, get_tasks/1]).

input() ->
  {ok,{obj,[{"status",200},
    {"data",
        [{obj,[{"id",1},
           {"task",
                <<"Turn on the bulb when the temperature is greater than 28 ">>},
           {"working_condition",1},
           {"depending_value",<<"Temperature">>},
           {"device",<<" BulbOnly">>},
           {"turning_point",28},
           {"config_id",null}]}]}]}}.


get_tasks({ok, {obj, [_Status, {"data", Tasks}|_Tail]}}) ->
  [ get_task_description(T) || T <- Tasks ].

get_task_description({obj, Proplist}) ->
  proplists:get_value("task", Proplist).

在外壳中运行它时，您将获得：

1> test:get_tasks(test:input()).
[<<"Turn on the bulb when the temperature is greater than 28 ">>]