如何在执行时忽略根JSON元素？

Question

I would like to serialize the following JSON into a map[string]string with map["Name"] == "Value"

{
    "Item": {
        "tags": {
            "Name": "Value"
        }
    }
}

However, I want to not have to create a strut with one field for "item". Is it possible to ignore the root JSON element in go similar to Java/Jackson: mapper.configure(DeserializationFeature.UNWRAP_ROOT_VALUE, true);

The best I have so far is:

items := make(map[string]map[string]string)
items := items["Item"]

Answer 1

I would make a small helper that will skip the root of the structure around the lines of:

func SkipRoot(jsonBlob []byte) json.RawMessage {
    var root map[string]json.RawMessage

    if err := json.Unmarshal(jsonBlob, &root); err != nil {
        panic(err)
    }
    for _, v := range root {
        return v
    }
    return nil
}

Then use it like that :

json.Unmarshal(SkipRoot(jsonBlob), &items)

Full example here : Playground