保存具有多個相同類型對象的 hibernate 實體

Question

當我保存以下實體時，它會在另一個 object 中復制相同的值：

例如，從我的 struts 項目（屏幕）中，如果我更改字段shippingShipper的值，則shippingConsignee也會更新為相同的值。

實體：

package com.logistics.entities.orderManagement;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToOne;
import javax.persistence.Table;

import org.hibernate.annotations.NotFound;
import org.hibernate.annotations.NotFoundAction;

import com.dsiksjane.beans.common.NecessaryFields;
import com.logistics.entities.customers.Customers;

import lombok.Getter;
import lombok.Setter;

@Entity
@Table(name="orders") 
@Getter
@Setter
public class Orders extends NecessaryFields {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name="id")
    private Long id;

    @Column(name="consignee_ntn")
    private String consigneeNtn;

    /**
     * Clearing Agent
     */
    @ManyToOne
    @NotFound(action = NotFoundAction.IGNORE)   
    @JoinColumn(name="clearing_agent_name")
    private Customers clearingAgentName;

    @ManyToOne
    @NotFound(action = NotFoundAction.IGNORE)
    @JoinColumn(name="shipment_shipper")
    private Customers shipmentShipper;

    @ManyToOne
    @NotFound(action = NotFoundAction.IGNORE)
    @JoinColumn(name="shipment_consignee")
    private Customers shipmentConsignee;

    @ManyToOne
    @NotFound(action = NotFoundAction.IGNORE)
    @JoinColumn(name="shipment_notify_party")
    private Customers shipmentNotifyParty;

    @ManyToOne
    @NotFound(action = NotFoundAction.IGNORE)
    @JoinColumn(name="shipment_forwarder")
    private Customers shipmentForwarder;


    @Column(name="clearing_agent_challan")
    private String clearingAgentChallan;

    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "order_details_id", referencedColumnName = "id")
    private OrdersDetail orderDetails;

    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "order_address_id", referencedColumnName = "id")
    private OrdersAddress orderAddress;

}

存儲庫 class：

@Service
public class OrderManagementService implements IOrderManagementService {

    @Autowired
    private IOrderManagementDAO dao;

    @Override
    public OrderManagementCO save(OrderManagementCO orderManagementCO, LoginBean loggedInUser) throws Exception {
    
        Orders obj = orderManagementCO.getOrder();
    
        if( obj.getId() != null ) {
            obj.setUpdatedBy(loggedInUser.getUserName());
            obj.setUpdatedDate( new java.util.Date() );
        } else {
            obj.setCreatedBy(loggedInUser.getUserName());
            obj.setCreatedDate( new java.util.Date() );
            obj.setCompanyId( loggedInUser.getCompanyId() );
        }
    
        dao.save( obj ); 
    
        return orderManagementCO;
    }
}

JSP 中的字段映射（工作正常）：

<s:select id="selectShipper" class="custom-field"
name="orderManagementCO.order.shipmentShipper.id" 
label="Service Type" headerKey="-1" headerValue="Select Shipper" 
list="%{customersList}" listKey="id" listValue="fullName" />

<s:select id="selectConsignee" class="custom-field"
name="orderManagementCO.order.shipmentConsignee.id" 
label="Consignee" headerKey="-1" headerValue="Select Consignee" 
list="%{customersList}" listKey="id" listValue="fullName" />

請檢查屏幕截圖，我將托運人更改為 C4 並保存。 收貨人也被選為C4。 請注意，兩個選擇都填充了相同的數據列表。 (客戶名單)

Answer 1

我認為，您應該在<s:select>標記中使用value屬性，並且該屬性應該具有您發送到后端的值。 可能類似於value="%{orderManagementCO.order.shipmentShipper.id}" ，而另一個應該是value="%{orderManagementCO.order.shipmentConsignee.id}" 。