这是一种方法。
func printType(prefix string, t reflect.Type, visited map[reflect.Type]bool) { // Print the name of this type with opening ( for description. fmt.Printf("%s (", t) // Traverse elements, adding to description as we go.elems: for { switch t.Kind() { case reflect.Ptr: fmt.Print("ptr to ") case reflect.Slice: fmt.Print("slice of ") case reflect.Array: fmt.Printf("array with %d elements of ", t.Len()) default: break elems } t = t.Elem() } // Print the kind of the type and the closing ) of the description. // In the case of a struct, we print the names of the fields and recurse. switch t.Kind() { case reflect.Struct: fmt.Printf("struct with %d fields)n", t.NumField()) if visited[t] { // Don't blow up on recursive type definition. break } visited[t] = true prefix += " " for i := 0; i < t.NumField(); i++ { f := t.Field(i) fmt.Print(prefix, f.Name, " ") printType(prefix, f.Type, visited) } default: fmt.Printf("%s)n", t.Kind()) }}func main() { printType("", reflect.TypeOf(Parent{}), make(map[reflect.Type]bool))}Parent {}的输出具有以下类型：
type child struct { Name *string Age int}type Parent struct { Name string Surname *string Children []*child PetNames []string Parents [2]*Parent child}是：
main.Parent (struct with 6 fields) Name string (string) Surname *string (ptr to string) Children []*main.child (slice of ptr to struct with 2 fields) Name *string (ptr to string) Age int (int) PetNames []string (slice of string) Parents [2]*main.Parent (array with 2 elements of ptr to struct with 6 fields) child main.child (struct with 2 fields)
游乐场的例子
