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Deserialize json object [message #40759]

Fri, 13 September 2013 13:11

andreicpp
Messages: 2
Registered: September 2013
Location: Romania

Junior Member

Hello,

I am receiving via httprequest a json object which I put in a String.

This is how it looks:

sResponse={"response":{"username":"andrei","role":"user ","firstName":"andrei","lastName":"nume","email":"andrei@gmail.com","id":2,"password":"1234"},"status":{"description":[], "status":"OK"}}

How can I deserialize it and put it in an object of class

class Response {
Username usr;
Response response;
}

I tried implementing jsonize method in this class Response, and than use loadfromjson, but no positive results.

Can someone help me?
Thank you

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Re: Deserialize json object [message #40825 is a reply to message #40759]

Sat, 21 September 2013 19:04

mirek
Messages: 14195
Registered: November 2005

Ultimate Member

There is no direct way how to do this "automatically". Usually, there is no need to store it in C++ structure too.

I usually do something like

Value r = ParseJSON(json_text)["response"];
r["username"]
r["email"]

Note that things are aranged so that failed ParseJSON returns empty Value and trying to access key in empty Value or missing key results in another empty Value (so the code above does not crash if json is invalid or keys are missing, just results in blanks..)

Mirek

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Re: Deserialize json object [message #40849 is a reply to message #40825]

Mon, 23 September 2013 10:23

andreicpp
Messages: 2
Registered: September 2013
Location: Romania

Junior Member

Thanks a lot
I wrote a method included in the class:

void HTTPResponseUser::LoadFromJson(Value json){
m_User.LoadFromJson(json["response"]);
m_status.LoadFromJson(json["status"]);

}

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