在go中输入嵌套的json解码[重复]

Question

This question already has an answer here:

• json.Marshal(struct) returns “{}” 2 answers

I try to Unmarshal some nested JSON in go, the structs go something along this

type GameState struct {
  missiles []*Missile
  others   []*Player
  you      *Player
}
type Message struct {
  gamestate   *GameState
  messagetype string
}
// json like {"gamestate":{...},"messagetype":"stateupdate"}

I've also put a running example online.

Now when I use map[string]interface{} to Unmarshal everything gets deserialized. But the moment I use the structs to Unmarshal I get nil back, both as result and error.

How come?

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Answer 1

All struct fields you want to marshal should start with uppercase letter (be public). This works https://play.golang.org/p/ReCp3BAfTb