是在Erlang中，字符串hello只是一个整数列表。编码Erlang的库映射到JSON将字符串解释为JSON列表，这就是为什么在输出中得到整数的列表。

The problem is that in Erlang the string "hello" is just a list of integer. The libraries that encode Erlang maps into JSON interpret strings as JSON lists, that is why you get a list of integers in the output.

为了获得JSON字符串，您需要使用Erlang二进制文件作为地图中的值：

In order to get JSON strings you need to use Erlang binaries as the values in your maps:

Food = #{<<"breakfast">> => <<"leftovers">>},
jiffy:encode(Food).
%%= <<"{ \"breakfast\" : \"leftovers\" }">>

jiffy 是一致的，所以它也会解码JSON字符串作为Erlang二进制文件，在使用 jiffy：decode / 1 时需要考虑。

jiffy is consistent so it will also decode JSON strings as Erlang binaries, which you need to take into account when using jiffy:decode/1.