go 读取yaml映射到struct

1. 安装

go get gopkg.in/yaml.v3

2. 创建yaml

Mysql:Host: 192.168.214.134Port: 3306UserName: wwPassword: wwDatabase: go_dbCharset: utf8mb4ParseTime: trueLoc: LocalListValue:- haha- test- vv
JWTSecret: nidaye

3. 定义结构体

type Mysql struct {Host      string   `yaml:"Host"`Port      int      `yaml:"Port"`UserName  string   `yaml:"UserName"`Password  string   `yaml:"Password"`Database  string   `yaml:"Database"`Charset   string   `yaml:"Charset"`ParseTime bool     `yaml:"ParseTime"`Loc       string   `yaml:"Loc"`ListValue []string `yaml:"ListValue"`
}type YamlStruct struct {Mysql     Mysql  `yaml:"Mysql"`JWTSecret string `yaml:"JWTSecret"`
}

4. 读取

package mainimport ("fmt""os""gopkg.in/yaml.v3"
)type Mysql struct {Host      string   `yaml:"Host"`Port      int      `yaml:"Port"`UserName  string   `yaml:"UserName"`Password  string   `yaml:"Password"`Database  string   `yaml:"Database"`Charset   string   `yaml:"Charset"`ParseTime bool     `yaml:"ParseTime"`Loc       string   `yaml:"Loc"`ListValue []string `yaml:"ListValue"`
}type YamlStruct struct {Mysql     Mysql  `yaml:"Mysql"`JWTSecret string `yaml:"JWTSecret"`
}func ReadConf(filename string) (*YamlStruct, error) {buf, err := os.ReadFile(filename)c := YamlStruct{}if err != nil {return nil, err} else {err2 := yaml.Unmarshal(buf, &c)if err2 != nil {return nil, err2} else {return &c, nil}}
}func main() {c, _ := ReadConf("./config.yaml")fmt.Printf("c: %v\n", c.Mysql.ListValue)}