package myreflect import ( "fmt" "testing" ) type ReqTest1 struct { AccessToken string `json:"access_token"` // access_token UserName string `json:"user_name" binding:"required"` // user name Password string `json:"password"` // password } func TestJson(t *testing.T) { var ts ReqTest1 ts.UserName = `1111` fmt.Println(FindTag(ts, "UserName", "json")) }