type Animal struct {
 ID int64
 Name string `gorm:"default:'galeone'"`
 Age int64
}
 

package main
import "fmt"
type s1 struct {
 ID string
 s2 s2
 s3 s3
}
type s2 struct {
 WebSiteName string
 URL   string
}
type s3 struct {
 KeyWord []string
 Where string
}
func main() {
 ss := s1{
 ID: "123456",
 s2: s2{
 WebSiteName: "ydook.com",
 URL:   "www.ydook.com",
 },
 s3: s3{
 // 重点：在结构体内部使用数组
 KeyWord: []string{"IT", "AI", "Web", "technology", "knowledge"},
 Where: "IT",
 },
 }
 fmt.Println(ss)
}