golang反射之遍历struct字段及内容

package main

import (
   "fmt"
   "reflect"
)

type BaseData struct {
   // mysql
   DbUrl      string `yaml:"db_url" name:"数据库地址"`
   DbUser     string `yaml:"db_user" name:"数据库用户名"`
   DbPassWord string `yaml:"db_pass_word" name:"数据库密码"`
   DbName     string `yaml:"db_name" name:"数据库名"`
}

func main() {
   d := BaseData{
      DbUrl:      "url",
      DbUser:     "user",
      DbPassWord: "pw",
      DbName:     "name",
   }
   t := reflect.TypeOf(d)
   v := reflect.ValueOf(d)
   for k := 0; k < t.NumField(); k++ {
      fmt.Println("name:", fmt.Sprintf("%+v", t.Field(k).Name), ", value:", fmt.Sprintf("%v", v.Field(k).Interface()), ", yaml:", t.Field(k).Tag.Get("yaml"))
   }
}

 

其中可以通过t.Field(k).Name获取struct字段名, 通过v.Field(k).Interface()获取value值, 通过t.Field(k).Tag.Get("yaml")获取标签.

输出内容:

name: DbUrl , value: url , yaml: db_url
name: DbUser , value: user , yaml: db_user
name: DbPassWord , value: pw , yaml: db_pass_word
name: DbName , value: name , yaml: db_name