Question

我有以下字符串：

"{\"headers\":[\"CNPJ\",\"PDF\",\"error\"],\"rows\":[[\"17192451000170\",\"FILE:application/pdf;170286;\",null],[\"234566767544\",\"FILE:application/pdf;456378;\",null],[\"233456767544\",\"FILE:application/pdf;456378;\",null]]}"

如何将其解析为普通的Json格式？

意思是：

{"rows" :[
 {"CNPJ":"17192451000170","PDF":"FILE:application/pdf;170286;","error":null},
 {"CNPJ":"17192451000170","PDF":"FILE:application/pdf;170286;","error":null},
 {"CNPJ":"17192451000170", "PDF":"FILE:application/pdf;170286;,"error":null"}
]}

或任何其他json格式

Answer 1

这已经是一种有效的JSON格式。

如果你只想剥离\，那么你可以简单地：

(hbd@crayon2.yoonka.com)31> JsonOrg = <<"{\"headers\":[\"CNPJ\",\"PDF\",\"error\"],\"rows\":[[\"17192451000170\",\"FILE:application/pdf;170286;\",null],[\"234566767544\",\"FILE:application/pdf;456378;\",null],[\"233456767544\",\"FILE:application/pdf;456378;\",null]]}">>.
<<"{\"headers\":[\"CNPJ\",\"PDF\",\"error\"],\"rows\":[[\"17192451000170\",\"FILE:application/pdf;170286;\",null],[\"234566767544\",\"FI"...>>

(hbd@crayon2.yoonka.com)32> io:format("~s~n", [binary_to_list(JsonOrg)]).
{"headers":["CNPJ","PDF","error"],"rows":[["17192451000170","FILE:application/pdf;170286;",null],["234566767544","FILE:application/pdf;456378;",null],["233456767544","FILE:application/pdf;456378;",null]]}
ok

您也可以在Json和Erlang之间来回解析。我用yajler decoder测试了它：

(hbd@crayon2.yoonka.com)43> {ok, Parsed} = yajler:decode(<<"{\"headers\":[\"CNPJ\",\"PDF\",\"error\"],\"rows\":[[\"17192451000170\",\"FILE:application/pdf;170286;\",null],[\"234566767544\",\"FILE:application/pdf;456378;\",null],[\"233456767544\",\"FILE:application/pdf;456378;\",null]]}">>).
{ok,[{<<"headers">>,[<<"CNPJ">>,<<"PDF">>,<<"error">>]},
     {<<"rows">>,
      [[<<"17192451000170">>,<<"FILE:application/pdf;170286;">>,
        undefined],
       [<<"234566767544">>,<<"FILE:application/pdf;456378;">>,
        undefined],
       [<<"233456767544">>,<<"FILE:application/pdf;456378;">>,
        undefined]]}]}

(hbd@crayon2.yoonka.com)44> Json = binary:list_to_bin(yajler:encode(Parsed)).
<<"{\"headers\":[\"CNPJ\",\"PDF\",\"error\"],\"rows\":[[\"17192451000170\",\"FILE:application/pdf;170286;\",\"undefined\"],[\"2345667675"...>>

Yajler是Erlang NIF所以它使用的是一个C库，在本例中称为yajl，用于进行实际的解析，但我想你可以从其他Erlang应用程序获得类似的结果解析JSON。

Erlang：将字符串解析为json

1 个答案: