Go-配置文件

一. ini配置文件

;INI文件由节、键、值组成。
[mysql]
host = 192.168.xxx.xxx
port = 3306
charset  = "utf8"

直接读取:

//go get github.com/Unknwon/goconfig
func main() {
   cfg, err := goconfig.LoadConfigFile("conf.ini")
   if err != nil {
      panic("错误")
   }
   //单值
   host, _ := cfg.GetValue("mysql", "host")
   port, _ := cfg.Int("mysql", "port")
   fmt.Println(host, port, show)
   //节点
   cfgMap, err := cfg.GetSection("mysql")
   fmt.Println(cfgMap["host"])
}

反序列化:

type IniConf struct {
   Mysql struct {
      Host    string
      Port    int
      Charset string
   }
}

//go get gopkg.in/gcfg.v1
func main() {
   conf :=new(IniConf)
   err := gcfg.ReadFileInto(conf, "conf.ini")
   if err != nil {
      panic(err)
   }
   fmt.Println(conf.Mysql.Host, conf.Mysql.Port)
}

二. ymal配置文件

host: 192.168.0.1
port: 3306
user: root
pwd: 123456
db: testdb
charset: "utf8"

直接读取:

// go get -u github.com/kylelemons/go-gypsy
func main() {
   conf, err := yaml.ReadFile("conf.yaml")
   if err != nil {
      fmt.Println(err)
   }
   fmt.Println(conf.Get("host"))
   fmt.Println(conf.GetInt("port"))
}

反序列化:

https://github.com/go-yaml/yaml

// go get gopkg.in/yaml.v2
func main() {
   c := NewYamlConf("conf.yaml")
   fmt.Printf("%s:%s@tcp(%s:%d)/%s?charset=%s\n", c.User, c.Pwd, c.Host, c.Port, c.Db, c.Charset)
}

type YamlConf struct {
   Host    string `yaml:"host"`
   Port    int    `yaml:"port"`
   User    string `yaml:"user"`
   Pwd     string `yaml:"pwd"`
   Db      string `yaml:"db"`
   Charset string `yaml:"charset"`
}

func NewYamlConf(path string) *YamlConf {
   ym := new(YamlConf)
   yf, err := ioutil.ReadFile(path)
   if err != nil {
      panic(err)
   }
   err = yaml.Unmarshal(yf, ym)
   if err != nil {
      panic(err)
   }
   return ym
}

三. json配置文件

{
  "host": "192.168.0.1",
  "port": 3306,
  "charset": "utf8"
}

//Json配置对象
type JsonConf struct {
   Host    string
   Port    int
   Charset string
}

func main() {
   jf, err := os.Open("conf.json")
   if err != nil {
      panic(err)
   }
   defer jf.Close()

   conf := JsonConf{}
   if err := json.NewDecoder(jf).Decode(&conf); err != nil {
      panic(err)
   }

   fmt.Println(conf.Host, conf.Port)
}