golang讀取各種配置文件(ini、json、yaml)

config := viper.New()
config.AddConfigPath("./conf/")  // 文件所在目錄
config.SetConfigName("b")        // 文件名
config.SetConfigType("ini")      // 文件類型
 
if err := config.ReadInConfig(); err != nil {
    if _, ok := err.(viper.ConfigFileNotFoundError); ok {
        fmt.Println("找不到配置文件..")
    } else {
        fmt.Println("配置文件出錯..")
    }
}
 
host := config.GetString("redis.host")  // 讀取配置
fmt.Println("viper load ini: ", host)

[mysql]
username='root'
password='123456'
 
[redis]
host='127.0.0.1'
poet=3306
 
[mongodb]
user='admin'
password='admin'

config := viper.New()
config.AddConfigPath("./conf/")
config.SetConfigName("c")
config.SetConfigType("json")
 
if err := config.ReadInConfig(); err != nil {
    if _, ok := err.(viper.ConfigFileNotFoundError); ok {
        fmt.Println("找不到配置文件..")
    } else {
        fmt.Println("配置文件出錯..")
    }
}
 
version := config.GetString("version")
origin := config.GetString("host.origin")
 
fmt.Println(version)
fmt.Println(origin)
 
// 讀取到map中
host := config.GetStringMapString("host")
fmt.Println(host)
fmt.Println(host["origin"])
fmt.Println(host["port"])
 
allSettings := config.AllSettings()
fmt.Println(allSettings)

{
  "version": "2.0",
  "secret": "footmark",
  "host": {
    "origin": "http://www.baidu.com",
    "port": 8080
  }
}

config := viper.New()
config.AddConfigPath("./conf/")
config.SetConfigName("a")
config.SetConfigType("yaml")
 
if err := config.ReadInConfig(); err != nil {
    if _, ok := err.(viper.ConfigFileNotFoundError); ok {
        fmt.Println("找不到配置文件..")
    } else {
        fmt.Println("配置文件出錯..")
    }
}
 
host := config.GetString("database.host")
fmt.Println("viper load yml: ", host)
 
allSettings := config.AllSettings()
fmt.Println(allSettings)

database:
  host: 127.0.0.1
  user: root
  dbname: test
  pwd: 123456

// viper 常用讀取配置的方法
Get(key string) : interface{}
GetBool(key string) : bool
GetFloat64(key string) : float64
GetInt(key string) : int
GetIntSlice(key string) : []int
GetString(key string) : string
GetStringMap(key string) : map[string]interface{}
GetStringMapString(key string) : map[string]string
GetStringSlice(key string) : []string
GetTime(key string) : time.Time
GetDuration(key string) : time.Duration
IsSet(key string) : bool
AllSettings() : map[string]interface{}