json string to struct

[yellowmarlboro]

I read config from other place, it return a map and all value is string, and can't sure what key in the Config.Mp map, so i want do it that way, but the Mp is nil after Unmarshal, how can i do it with a good way ? hook or something ? thanks ~

type DB struct {
	Name string   `mapstructure:"name"`
	Ip   string   `mapstructure:"ip"`
	Vars []string `mapstructure:"vars"`
}

type Config struct {
	Aid      string                 `mapstructure:"aid"`
	Times    int                    `mapstructure:"times"`
	Mp       map[string]interface{} `mapstructure:"mp"`
	DBConfig DB                     `mapstructure:"db"`
}

func map2Struct() {

	m := make(map[string]interface{})

	m["aid"] = "123"
	m["db.name"] = "test"
	m["db.ip"] = "10.0.0.2"
	m["db.vars"] = `a, b`
	m["times"] = "1"
	m["mp"] = `{"a": 1, "b": 0.1, "c": "asd", d:[1,2]}`
	v := viper.New()
	v.MergeConfigMap(m)
	v.SetConfigType("properties")

	config := Config{}
	v.Unmarshal(&config)
}

[yellowmarlboro]

use hook