實體類

原創 ZPH2254 2020-02-25 00:14

今天在論壇上發了個帖子，問什麼事VO？

有一兄弟是這麼說的：

關於實體類，分爲兩種PO、VO。
PO主要是用於實現持久層的數據存儲。
VO則主要用於邏輯層和表示層之間數據處理封裝。

PO字段跟數據庫的表的列之間一一對應，而VO則根據業務需求，封裝特定字段信息。
PO對象跟VO對象可以是多對多關係。

PO對象跟VO對象之間的數據傳遞主要在邏輯層進行。

我覺得挺有用的！

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