Erlang Json

今天瀏覽了一下Erlang Json數據格式轉化， 只是瀏覽，尚未細看, 作了小測試

rfc4627

固然主要是這個地方找到的 http://www.lshift.net/blog/2007/02/17/json-and-json-rpc-for-erlang/

1. git clone git://github.com/tonyg/erlang-rfc4627
2. rebar com 編譯獲取的項目 erlang-rfc4627
3. 查看下 test 文檔後 小小測試,固然個人測試很明顯也是用的測試文檔的例子
   Eshell V6.0 (abort with ^G)
   1> rfc4627:encode({obj,[{name,hello},{age,23}]}).
   "{"name":"hello","age":23}"
   2> O = rfc4627:encode({obj, [{name, hideto}, {age, 23}]}).
   "{"name":"hideto","age":23}"
   3> rfc4627:decode(O).
   {ok,{obj,[{"name",<<"hideto">>},{"age",23}]},[]}
   4>
   4> A = #address{number = 6, street = <<"Rufus Street">>, town = <<"London">>}.

• 2: record address undefined
  5> rd(address, {number, street, town, country = <<"England">>}).
  address
  6> A = #address{number = 6, street = <<"Rufus Street">>, town = <<"London">>}.
  ‘#address{number = 6,street = <<"Rufus Street">>,
  town = <<"London">>,country = <<"England">>}
  7> ?RFC4627_FROM_RECORD(address, A).
• 1: syntax error before: '?'
  7> rfc4627:from_record(A, RName, record_info(fields, RName)).
• 1: variable 'RName' is unbound
  8> rfc4627:from_record(A, address, record_info(fields, RName)).
• 1: variable 'RName' is unbound
  9> rfc4627:from_record(A, address, record_info(fields, address)).
  {obj,[{"number",6},
  {"street",<<"Rufus Street">>},
  {"town",<<"London">>},
  {"country",<<"England">>}]}
  10> R = rfc4627:from_record(A, address, record_info(fields, address)).
  {obj,[{"number",6},
  {"street",<<"Rufus Street">>},
  {"town",<<"London">>},
  {"country",<<"England">>}]}
  11> rfc4626:to_record(R, #address{}, record_info(field, address)).

• 1: illegal record info
  12> rfc4626:to_record(R, #address{}, record_info(fields, address)).
  ** exception error: undefined function rfc4626:to_record/3
  13> rfc4627:to_record(R, #address{}, record_info(fields, address)).
  ‘#address{number = 6,street = <<"Rufus Street">>,
  town = <<"London">>,country = <<"England">>}
  14> rfc4627:equiv({obj, [{"a", true}, {"b", 123}]}, {obj, [{"a", true}, {"b", 123}]}).
  true

  mochijson2

  網址是： https://github.com/mochi/mochiweb

1. git clone git://github.com/mochi/mochiweb.git
2. rebar com 編譯獲取的項目 mochiweb
3. 開始小小測試
   

   
   
   Eshell V6.0 (abort with ^G)
   
   1> ErlSrc = {struct,[{<<"students">>,
   
   1> [{struct,[{<<"student_number">>,45},
   
   1> {<<"details">>,
   
   1> [{struct,[{<<"FirstName">>,<<"Joshua">>},
   
   1> {<<"Surname">>,<<"Muzaaya">>}]}]}]}]}]}.
   
   {struct,[{<<"students">>,
   
   [{struct,[{<<"student_number">>,45},
   
   {<<"details">>,
   
   [{struct,[{<<"FirstName">>,<<"Joshua">>},
   
   {<<"Surname">>,<<"Muzaaya">>}]}]}]}]}]}
   
   3> JsonDes = mochijson2:encode(ErlSrc).
   
   [123,
   
   [34,<<"students">>,34],
   
   58,
   
   [91,
   
   [123,
   
   [34,<<"student_number">>,34],
   
   58,"45",44,
   
   [34,<<"details">>,34],
   
   58,
   
   [91,
   
   [123,
   
   [34,<<"FirstName">>,34],
   
   58,
   
   [34,<<"Joshua">>,34],
   
   44,
   
   [34,<<"Surname">>,34],
   
   58,
   
   [34,<<"Muzaaya">>,34],
   
   125],
   
   93],
   
   125],
   
   93],
   
   125]
   
   4> mochijson2:decode(JsonDes).
   
   {struct,[{<<"students">>,
   
   [{struct,[{<<"student_number">>,45},
   
   {<<"details">>,
   
   [{struct,[{<<"FirstName">>,<<"Joshua">>},
   
   {<<"Surname">>,<<"Muzaaya">>}]}]}]}]}]}
   
   

   
   相關資料：
   Erlang的JSON庫
   JSON 百度百科
   Json格式解析