How to create empty json object correctly using web.json in cpp?

Question

I want to create following json request:

{
  "Value1":{},
  "Value2":"some string value"
}

to achieve this I have tried following code in cpp:

json::value &refRequest
json::value jRequest = json::value();
refRequest[requestKey::Value1] = json::value(json::value::object()); //for creating empty object
refRequest[requestKey::Value2] = json::value::string("some string");

but it gives output as:

{
  "Value1":},
  "Value2":"some string value"
}

if you observe, instead of returning empty object as {} it gives the output as } and this results in to malformed request. I am not sure where exactly I am going wrong, any help will would be appreciated. Thanks

I am using C++ rest SDK and namespace web, I am not using JsonCpp. — justjais
– justjais, Commented Oct 21, 2016 at 13:04

Maresh · Accepted Answer · 2020-01-02 16:11:38Z

1

I believe your mistake is that you are constructing a json::value from a json::value::object()

According to the documentation the line should be fixed to:

refRequest[requestKey::Value1] = json::value::object();

edited Jan 2, 2020 at 16:11

answered Oct 21, 2016 at 13:13

Maresh

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3 Comments

Maresh Over a year ago

Doesn't refRequest need to be a type object aswell?

justjais Over a year ago

No, its not necessary for my case.

John Snow Over a year ago

Linked documentation is flagged as insecure. If possible this answer needs an updated link or just pasting the documentation in the answer so that it is self contained.

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