go get -u gopkg.in/yaml.v2
package main
 
import (
	"os"
	"log"
	"fmt"
	"encoding/json"
 
	"gopkg.in/yaml.v2"
)
 
type Config struct {
	Test Test  `yaml:"test"`
}
 
type Test struct {
	User  []string  `yaml:"user"`
	MQTT  MQ  `yaml:"mqtt"`
	Http HTTP   `yaml:"http"`
}
 
type HTTP struct {
	Port  string  `yaml:"port"`
	Host  string  `yaml:"host"`
}
 
 
type MQ struct {
	Host string  `yaml:"host"`
	Username  string  `yaml:"username"`
	Password  string  `yaml:"password"`
}
 
 
//read yaml config
//注:path为yaml或yml文件的路径
func ReadYamlConfig(path string)  (*Config,error){
	conf := &Config{}
	if f, err := os.Open(path); err != nil {
	    return nil,err
	} else {
		yaml.NewDecoder(f).Decode(conf)
	}
	return  conf,nil
}
 
//test yaml
func main() {
	conf,err := ReadYamlConfig("D:/test_yaml/test.yaml")
	if err != nil {
		log.Fatal(err)
	}
 
	byts,err := json.Marshal(conf)
	if err != nil {
		log.Fatal(err)
	}
 
	fmt.Println(string(byts))
}
test:
  user:
    - Tom
    - Lily
    - Skay
 
  mqtt:
     host: localhost:1883
     username: test
     password: test
 
  http: {port: "8080", host: "127.0.0.1"}
{"Test":{"User":["Tom","Lily","Skay"],"MQTT":{"Host":"localhost:1883","Username":"test","Password":"test"},"Http":{"Port":"8080","Host":"127.0.0.1"}}}