refactor: 项目结构合理性优化

src/main/java/com/youlai/system/handler/mybatisplus/MyMetaObjectHandler.java

@@ -0,0 +1,40 @@
+package com.youlai.system.handler.mybatisplus;
+
+import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
+import org.apache.ibatis.reflection.MetaObject;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDateTime;
+
+/**
+ * mybatis-plus 字段自动填充
+ *
+ * @author haoxr
+ * @since 2022/10/14
+ * @link https://mp.baomidou.com/guide/auto-fill-metainfo.html
+ */
+@Component
+public class MyMetaObjectHandler implements MetaObjectHandler {
+
+    /**
+     * 新增填充创建时间
+     *
+     * @param metaObject
+     */
+    @Override
+    public void insertFill(MetaObject metaObject) {
+        this.strictInsertFill(metaObject, "createTime", () -> LocalDateTime.now(), LocalDateTime.class);
+        this.strictUpdateFill(metaObject, "updateTime", () -> LocalDateTime.now(), LocalDateTime.class);
+    }
+
+    /**
+     * 更新填充更新时间
+     *
+     * @param metaObject
+     */
+    @Override
+    public void updateFill(MetaObject metaObject) {
+        this.strictUpdateFill(metaObject, "updateTime", () -> LocalDateTime.now(), LocalDateTime.class);
+    }
+
+}