在结构映射中存储/解码json的最佳方法

Question

I have a mapping inside a struct as follow :

type Red struct {
       **other 
       Tel map[string]string `json:"Tel"`
}

I receive my data json formated the following way

{
 "Params":[{"rewew": "tref"},{"Value": "x"},....]    
}

And i'm searching for the most effective way of populating my struct with the data so that

Tel["rewew"] = "tref"
Tel["Value"] = "x"

For the rest of the values it works fine when those are simplier values when doing this:

 var t Red
 decode := json.NewDecoder(req.Body)
 decode.Decode(&t)

But i'm having trouble with maps

Answer 1

If your JSON is

{
  "Params":[{"rewew": "tref"},{"Value": "x"},....]    
}

And if you want to map Params into Tel, your structure should be:

type Red struct {
   **other 
   Tel []map[string]string `json:"Params"`
}

And you can add new elements like:

red.Tel = append(red.Tel, map[string]string{"rewew": "tref"})
red.Tel = append(red.Tel, map[string]string{"Value": "x"})

But, I think there is a better way to do it if you're allowed to change the request AND the keys don't repeat themselves, using a JSON like

{
  "Params":{"rewew": "tref", "Value": "x"}    
}

The struct should be:

type Red struct {
   **other 
   Tel map[string]string `json:"Params"`
}

and you can use the data like:

red.Tel["rewew"] = "tref"
red.Tel["Value"] = "x"