我可以在golang中的json中将用户定义的值作为数据类型吗

I am creating a json response in golang.I have a question that i am able to generate a json such as :

{
  "Name" : "Country",
  "Value" : "abc"
}

The value of name and value can change based on the user and the struct I am using is like:

type xAxis struct {
  Name string,
  Value string
}

I want my json to look like this:

{
   "Country" : "abc"
}

Is it possible to create the json like this?

you can override the way Go's json package marshals a struct by writing a custom MarshalJSON function:

type xAxis struct {
    Name  string
    Value string
}

func (a xAxis) MarshalJSON() ([]byte, error) {
    return json.Marshal(map[string]interface{}{a.Name: a.Value})
}

to try it: http://play.golang.org/p/G_E4IpNYIz

The encoding/json package allows you to use a map instead of a struct.

That's probably not as performant as structures, but it works.

data := map[string]string {
    "Country": "abc",
    "Foo": "bar",
}

// Creating JSON from a map
j, err := json.Marshal(data)
if err != nil {
    log.Fatal(err)
}
fmt.Println(string(j))
// ==> {"Country":"abc","Foo":"bar"}

// Creating map from JSON
var data2 map[string]string
err = json.Unmarshal(j, &data2)
if err != nil {
    log.Fatal(err)
}
fmt.Println(data2)
// ==> map[Country:abc Foo:bar]