golang使用yaml文件做配置文件

• yaml配置文件

  host:
    localhost:3306
  user:
    root
  pwd:
    112233
  dbname:
    1

• 安装yaml读取工具

  go get gopkg.in/yaml.v2 

• 从yaml文件读取配置

  package main
  ​
  import (
    "fmt"
    "gopkg.in/yaml.v2"
    "os"
  )
  ​
  type Conf struct {
    Host   string `yaml:"host"`
    User   string `yaml:"user"`
    Pwd    string `yaml:"pwd"`
    Dbname string `yaml:"dbname"`
  }
  ​
  func (c *Conf) getConf() (*Conf, error) {
    yamlFile, err := os.ReadFile("yaml配置文件路径")
    if err != nil {
      return nil, err
    }
    err = yaml.Unmarshal(yamlFile, c)
    if err != nil {
      return nil, err
    }
    return c, nil
  }
  ​
  func main() {
    var c Conf
    cfg, err := c.getConf()
    if err != nil {
      fmt.Println("配置读取失败，err:", err.Error())
      return
    }
    fmt.Println(cfg.Pwd)
  }
  ​