Returning Map<T, List<V>> as a JSON from Spring. Map key elements do not parse into JSON format -

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i have question connected returning map<t, list<v>> json response.

i have spring server returns json objects, i'm exploring problem returning map in format. want return map<t, list<v>> server json , display in form this:

-t.name:     {        v.somefield1 = ...,        v.somefield2 = ...,        .        .     },     {        v.somefield1 = ...,        v.somefield2 = ...,        .        .     }, -t.name:     {       ...     }  ....

i have @onetomany relation between objects t , v. return in way, apart t objects - jackson return object t not json, full package/path t class in project, [app.something.tobject.class]. cannot access field there.

should try cast object jsonobject example before i'll send (i think stupid)? have no idea why jackson parse objects in list , return them in json format , not change key objects t json.

any ideas or solutions how resolve problem?

edit: maybe @ this first.

well, had same problem today , did creating dto:

public class class mydto {   public t key;   public list<v> values; }

and convert that:

@get // etc. public list<mydto> getmymap() {   list<mydto> mydtolist = new arraylist<>();   for(t key : mymap.keys()) {     mydto mydto = new mydto();     mydto.key = key;     mydto.values = mymap.get(key);   }   return mydtolist; }

i don't know if there better way. i'd glad know myself if there was. appears there way little different.


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