title: How to support Chinese in http request body?
body: <pre><code>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),
  </code></pre>
  
  <p>The http request body received by http server is not 我是中文。How do I fix this issue?</p>