I have the following json string
{"x":{"l.a":"test"}}
type Object struct {
Foo map[string]map[string]string `json:"l.a"`
}
var obj Object
err = json.Unmarshal(body, &obj)
if err != nil{
fmt.Println(err)
}
fmt.Println("jsonObj", obj)
but get empty any idea how can i get the string "test"
CodePudding user response:
With your code Unmarshal
is looking for l.a
at the top level in the JSON (and it's not there - x
is).
There are a number of ways you can fix this, the best is going to depend upon your end goal; here are a couple of them (playground)
const jsonTest = `{"x":{"l.a":"test"}}`
type Object struct {
Foo map[string]string `json:"x"`
}
func main() {
var obj Object
err := json.Unmarshal([]byte(jsonTest), &obj)
if err != nil {
fmt.Println(err)
}
fmt.Println("jsonObj", obj)
var full map[string]map[string]string
err = json.Unmarshal([]byte(jsonTest), &full)
if err != nil {
fmt.Println(err)
}
fmt.Println("jsonObj2", full)
}
(Got a phone call while entering this and see @DavidLilue has provided a similar comment but may as well post this).
CodePudding user response:
You can always create a struct to unmarshall your json
type My_struct struct {
X struct {
LA string `json:"l.a"`
} `json:"x"`
}
func main() {
my_json := `{"x":{"l.a":"test"}}`
var obj My_struct
json.Unmarshal([]byte(my_json), &obj)
fmt.Println(obj.X.LA)
}
here you are creating a struct and then unmarshalling your json string to its object, so when you do obj.X.LA
you will get the string