網上有些文章給的示例直接傳bson.D，可能是客戶端版本問題，在mongo-go-driver@v2.0.0上Find方法要求傳入type M map[string]interface{}，直接傳bson.D會報如下錯誤：
“cannot transform type bson.D to a BSON Document: WriteArray can only write a Array while positioned on a Element or Value but is positioned on a TopLevel”
//報錯：cannot transform type bson.D to a BSON Document: WriteArray can only write a Array while positioned on a Element or Value but is positioned on a TopLevel
cur, err := collection.Find(ctx, bson.D{{"type", "電視劇"}})
//正確
cur, err := collection.Find(ctx, bson.D{{"type", "電視劇"}}.Map())
//正確
cur, err := collection.Find(ctx, bson.M{"type":"電視劇"})