Ini config file UnmarshalKey is empty

[LoveVsLike]

package main

import (
"fmt"
"github.com/spf13/viper"
)

/**

[domains]
CrowdDomain = test
BasePortrait = test1
RealtimePortrait = test2
PortrayalVBU = test3

[cron]
DataJobCron = 0 1 * * * ?
JobCron = 0 5 * * * ?

*/

func main() {
conf := viper.New() //初始话一个viper.viper对象
conf.AddConfigPath("conf")
conf.SetConfigName("config")
conf.SetConfigType("ini")
if err := conf.ReadInConfig(); err != nil {
if _, ok := err.(viper.ConfigFileNotFoundError); ok {
fmt.Println("找不到配置文件")
} else {
fmt.Println("配置文件出错")
}
}

ss1 := &Domains{}
conf.UnmarshalKey("domains", ss1)
fmt.Println(ss1)

}

type Domains struct {
CrowdDomain string mapstructure:",CrowdDomain"
BasePortrait string mapstructure:",BasePortrait"
RealtimePortrait string mapstructure:",RealtimePortrait"
PortrayalVBU string mapstructure:",PortrayalVBU"
}

type ConfigStruct struct {
Domains Domains mapstructure:"domains"
}