jpa 一对多

One

package cn.country.cunyue.app.domain.entity.coupon;

import lombok.Getter;
import lombok.Setter;

import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;

@Getter
@Setter
@Entity
@Table(name = M.TABLE_PREFIX + "platform_coupon")
public class PlatformCoupon extends BaseModel {
    private static final long serialVersionUID = 449967984673292290L;
    
    @OneToMany(targetEntity = CouponProduct.class)
    @JoinColumn(name = "coupon_id", referencedColumnName = "id")
    private Set<CouponProduct> facilities = new HashSet<>();
}

Many

package cn.country.cunyue.app.domain.entity.coupon;

import lombok.*;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;

/**
 * 优惠商品表
 */
@Getter
@Setter
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Entity
@Table(name = M.TABLE_PREFIX + "coupon_product")
public class CouponProduct extends BaseModel {
    private static final long serialVersionUID = 449967984673292291L;

    /**
     * 优惠劵id
     */
    @Column(name = "coupon_id", columnDefinition = M.NUM_COLUMN)
    private Integer couponId;

}