first commit

src/main/java/com/peanut/modules/book/entity/ActivityCouponEntity.java

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+package com.peanut.modules.book.entity;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableLogic;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.math.BigDecimal;
+import java.util.Date;
+import java.util.List;
+
+
+/**
+ * 活动实体
+ */
+@Data
+@TableName("sys_activity")
+public class ActivityCouponEntity implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @TableId
+    private Integer id;
+
+    /**
+     * 关联活动ID
+     */
+    private Integer activityId;
+
+    /**
+     * 关联优惠券Id
+     */
+    private Integer couponId;
+
+    /**
+     * 关联商品Id
+     */
+    private Integer productId;
+
+}