how to support chinese in http request body?

[denofiend]

how to support chinese in http request body?

[denofiend]

    URL = http://example.com,
    Header = [],
    Type = "application/json",
    Content = "我是中文",

    Body = lists:concat(["{\"type\":\"0\",\"result\":[{\"url\":\"test.cn\",\"content\":\"", unicode:characters_to_list(Content), "\"}]}"]),
    lager:debug("URL:~p, Body:~p~n", [URL, Body]),
    HTTPOptions = [],
    Options = [],
    Response = httpc:request(post, {URL, Header, Type, Body}, HTTPOptions, Options),

but http request body received by http server is not 我是中文。
how to sovle this problem?