使用大神写的库jinzhu/configor

1.安装

go get github.com/jinzhu/configor

2.使用

package main

import (
    "fmt"
    "github.com/jinzhu/configor"
)

var Config = struct {
    APPName string `default:"app name"`

    DB struct {
        Name     string
        User     string `default:"root"`
        Password string `required:"true" env:"DBPassword"`
        Port     uint   `default:"3306"`
    }

    Contacts []struct {
        Name  string
        Email string `required:"true"`
    }
}{}

func main() {
    configor.Load(&Config, "config.yml")
    fmt.Printf("config: %#v", Config)
}

yaml文件格式

#config.yml
appname: test

db:
    name:     test
    user:     test
    password: test
    port:     1234

contacts:
- name: i test
  email: test@test.com

输出:

config: struct { APPName string "default:\"app name\""; DB struct { Name string; User string "default:\"root\""; Password string "required:\"true\" env:\"DBPassword\""; Port uint "default:\"3306\"" }; Contacts []struct { Name string; Email string "required:\"true\"" } }{APPName:"test", DB:struct { Name string; User string "default:\"root\""; Password string "required:\"true\" env:\"DBPassword\""; Port uint "default:\"3306\"" }{Name:"test", User:"test", Password:"test", Port:0x4d2}, Contacts:[]struct { Name string; Email string "required:\"true\"" }{struct { Name string; Email string "required:\"true\"" }{Name:"i test", Email:"test@test.com"}}}%