详解Go开发Struct转换成map两种方式比较

最近做Go开发的时候接触到了一个新的orm第三方框架gorose，在使用的过程中，发现没有类似beego进行直接对struct结构进行操作的方法，有部分API是通过map进行数据库相关操作，那么就需要我们把struct转化成map，下面是是我尝试两种不同struct转换成map的方法

mport (
  "encoding/json"
  "fmt"
  "reflect"
  "time"
)

type Persion struct {
  Id    int
  Name   string
  Address string
  Email  string
  School  string
  City   string
  Company string
  Age   int
  Sex   string
  Proviece string
  Com   string
  PostTo  string
  Buys   string
  Hos   string
}

func main() {
  StructToMapViaJson()
  //StructToMapViaReflect()
}

func StructToMapViaJson() {
  m := make(map[string]interface{})
  t := time.Now()
  person := Persion{
    Id:    98439,
    Name:   "zhaondifnei",
    Address: "大沙地",
    Email:  "dashdisnin@126.com",
    School:  "广州第十五中学",
    City:   "zhongguoguanzhou",
    Company: "sndifneinsifnienisn",
    Age:   23,
    Sex:   "F",
    Proviece: "jianxi",
    Com:   "广州兰博基尼",
    PostTo:  "蓝鲸XXXXXXXX",
    Buys:   "shensinfienisnfieni",
    Hos:   "zhonsndifneisnidnfie",
  }
  j, _ := json.Marshal(person)
  json.Unmarshal(j, &m)
  fmt.Println(m)
  fmt.Println(time.Now().Sub(t))
}

一、通过struct转json，json转成map

func StructToMapViaJson() {
  m := make(map[string]interface{})
  t := time.Now()
  person := Persion{
    Id:    98439,
    Name:   "zhaondifnei",
    Address: "大沙地",
    Email:  "dashdisnin@126.com",
    School:  "广州第十五中学",
    City:   "zhongguoguanzhou",
    Company: "sndifneinsifnienisn",
    Age:   23,
    Sex:   "F",
    Proviece: "jianxi",
    Com:   "广州兰博基尼",
    PostTo:  "蓝鲸XXXXXXXX",
    Buys:   "shensinfienisnfieni",
    Hos:   "zhonsndifneisnidnfie",
  }
  j, _ := json.Marshal(person)
  json.Unmarshal(j, &m)
  fmt.Println(m)
  fmt.Printf("duration:%d", time.Now().Sub(t))
}

output:
map[Proviece:jianxi Com:广州兰博基尼 Hos:zhonsndifneisnidnfie Name:zhaondifnei Company:sndifneinsifnienisn Buys:shensinfienisnfieni Age:23 PostTo:蓝鲸XXXXXXXX Address:大沙地 School:广州第十五中学 City:zhongguoguanzhou Sex:F Id:98439 Email:dashdisnin@126.com]
duration:250467

二、通过反射形式生成map

func StructToMapViaReflect() {
  m := make(map[string]interface{})
  t := time.Now()
  person := Persion{
    Id:    98439,
    Name:   "zhaondifnei",
    Address: "大沙地",
    Email:  "dashdisnin@126.com",
    School:  "广州第十五中学",
    City:   "zhongguoguanzhou",
    Company: "sndifneinsifnienisn",
    Age:   23,
    Sex:   "F",
    Proviece: "jianxi",
    Com:   "广州兰博基尼",
    PostTo:  "蓝鲸XXXXXXXX",
    Buys:   "shensinfienisnfieni",
    Hos:   "zhonsndifneisnidnfie",
  }
  elem := reflect.ValueOf(&person).Elem()
  relType := elem.Type()
  for i := 0; i < relType.NumField(); i++ {
    m[relType.Field(i).Name] = elem.Field(i).Interface()
  }
  fmt.Println(m)
  fmt.Printf("duration:%d", time.Now().Sub(t))
}

output:
map[Buys:shensinfienisnfieni Name:zhaondifnei City:zhongguoguanzhou Sex:F Proviece:jianxi Com:广州兰博基尼 Id:98439 School:广州第十五中学 Address:大沙地 Age:23 PostTo:蓝鲸XXXXXXXX Hos:zhonsndifneisnidnfie Email:dashdisnin@126.com Company:sndifneinsifnienisn]
duration:104239

结论

通过比较可以看出，通过反射的形式转换基本上是通过json形式转换的两倍。

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