fix serilize

apps/iot/src/endpoint/iot_donghuoliren_endpoint.erl

@@ -95,6 +95,7 @@ handle_cast({forward, LocationCode, DynamicLocationCode, EventType, Params},
     State = #state{url = Url, token = Token, logger_pid = LoggerPid, succ_counter = SuccCounter, fail_counter = FailCounter}) ->
 
     Body = format_event(LocationCode, DynamicLocationCode, EventType, Params),
+
     %% 签名信息
     Sign = iot_util:md5(iolist_to_binary([Token, Body, Token])),
     Url1 = Url ++ "?sign=" ++ binary_to_list(Sign),
@@ -146,7 +147,7 @@ do_post(Url, Body) when is_binary(Body) ->
     Headers = [
         {<<"content-type">>, <<"application/json">>}
     ],
-    case hackney:request(post, Url, Headers, Body) of
+    case hackney:request(post, Url, Headers, Body, [{pool, false}]) of
         {ok, 200, _, ClientRef} ->
             {ok, RespBody} = hackney:body(ClientRef),
             hackney:close(ClientRef),
@@ -176,12 +177,42 @@ format_event(LocationCode, DynamicLocationCode, EventType,
         <<"https://lgsiot.njau.edu.cn/upload/2024/11/29/2024-11-29-1732842080-1732842100.jpg">>
     ],
 
+    %% 对端有key的顺序限制
     Params = #{
+        <<"attachments">> => Attachments,
         <<"eventLocation">> => <<"事件地点测试值"/utf8>>,
-        <<"eventType">> => <<"动火离人"/utf8>>,
         <<"eventTime">> => Datetime,
-        <<"videoJkAddr">> => <<"rtsp://admin:admin@123@192.168.111.147/cam/realmonitor?channel=1&subtype=0">>,
-        <<"attachments">> => Attachments
+        <<"eventType">> => <<"动火离人"/utf8>>,
+        <<"videoJkAddr">> => <<"rtsp://admin:admin@123@192.168.111.147/cam/realmonitor?channel=1&subtype=0">>
     },
 
-    iolist_to_binary(jiffy:encode(Params, [force_utf8])).
+    iolist_to_binary(serialize(Params)).
+
+%% 简单的序列话函数，升序排列
+-spec serialize(M :: map()) -> JsonString :: binary().
+serialize(M) when is_map(M) ->
+    L = maps:to_list(M),
+    L1 = lists:sort(fun({K, _}, {K1, _}) -> K < K1 end, L),
+    serialize0(L1, []).
+
+serialize0([], Target) ->
+    B = iolist_to_binary(lists:join(<<$,>>, lists:reverse(Target))),
+    <<${, B/binary, $}>>;
+serialize0([{K, V}|T], Target) ->
+    V1 = if
+             is_integer(V) ->
+                 integer_to_binary(V);
+             is_float(V) ->
+                 float_to_binary(V);
+             is_binary(V) ->
+                 <<$", V/binary, $">>;
+             is_boolean(V) andalso V ->
+                 <<"true">>;
+             is_boolean(V) andalso not V ->
+                 <<"false">>;
+             is_list(V) ->
+                 V0 = iolist_to_binary(lists:join(<<$,>>, V)),
+                 <<$[, V0/binary, $]>>
+         end,
+    Item = <<$", K/binary, $", $:, V1/binary>>,
+    serialize0(T, [Item|Target]).