初始版本，目前线上可用

backEnd/src/abstrClass/BaseEntity.ts

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+import { Column, Entity, PrimaryGeneratedColumn } from "typeorm";
+import dayjs from "dayjs";
+export abstract class BaseEntity {
+  @PrimaryGeneratedColumn({ type: "int", name: "id" })
+  id: number;
+  @Column({
+    type: "datetime",
+    comment: "创建时间",
+    default: () => "CURRENT_TIMESTAMP",
+    transformer: {
+      to(value: Date) {
+        return value;
+      },
+      from(value) {
+        return dayjs(new Date(value)).format("YYYY-MM-DD HH:mm:ss");
+      },
+    },
+  })
+  createDate: Date;
+  @Column({
+    type: "datetime",
+    comment: "更新时间",
+    default: () => "CURRENT_TIMESTAMP",
+    transformer: {
+      to(value: Date) {
+        return value;
+      },
+      from(value) {
+        return dayjs(new Date(value)).format("YYYY-MM-DD HH:mm:ss");
+      },
+    },
+  })
+  updateDate: Date;
+}