fix

apps/iot/src/influxdb/influx_point.erl

@@ -38,8 +38,9 @@ normalized(#point{measurement = Name, tags = Tags, fields = Fields, time = Time}
 
 field_val(V) when is_integer(V) ->
     <<(integer_to_binary(V))/binary, "i">>;
-field_val(V) when is_number(V) ->
+field_val(V) when is_float(V) ->
-    <<(integer_to_binary(V))/binary, "u">>;
+    %% 默认按照浮点数表示
+    iot_util:float_to_binary(V, 6);
 field_val(V) when is_binary(V) ->
     <<$", V/binary, $">>;
 field_val(V) when is_list(V); is_map(V) ->

apps/iot/src/iot_util.erl

@@ -10,7 +10,7 @@
 -author("licheng5").
 
 %% API
--export([timestamp/0, number_format/2, current_time/0, timestamp_of_seconds/0]).
+-export([timestamp/0, number_format/2, current_time/0, timestamp_of_seconds/0, float_to_binary/2]).
 -export([step/3, chunks/2, rand_bytes/1, uuid/0, md5/1, parse_mapper/1]).
 -export([json_data/1, json_error/2]).
 -export([queue_limited_in/3, assert_call/2]).
@@ -114,4 +114,11 @@ parse_mapper(Mapper) when is_list(Mapper) ->
             {ok, F};
         false ->
             error
-    end.
+    end.
+
+-spec float_to_binary(Num :: number(), integer()) -> binary().
+float_to_binary(V, _) when is_integer(V) ->
+    integer_to_binary(V);
+float_to_binary(V, Decimals) when is_float(V), is_integer(Decimals) ->
+    S = float_to_list(V, [{decimals, Decimals}, compact]),
+    list_to_binary(S).