Gin: response a json,how could i make the cases "lowercase"?

[birdycn]

Example:
type T struct { Foo int }

response,will tips:
{"Foo":42}

but i want to get
{"foo":42}

In many cases, it is very difficult to define lowercase one by one. Is there a simple way?

[ravener]

Add the json property in the struct like so:

type T struct {
  Foo int `json:"foo"`
}

That tells what to name the key when serializing to json