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:  "[e-mail]",
    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:  "[e-mail]",
    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:[e-mail]]
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:  "[e-mail]",
    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:[e-mail] 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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