Question

情况看起来像这样。我在MySQL中有2个表（密码和顺序），在Spring中有对应于它们的实体。他们在这里：

食谱：

import com.fasterxml.jackson.annotation.JsonIgnore;

import javax.persistence.*;
import javax.validation.constraints.NotNull;
import java.util.Set;

@Entity
@Table(name = "recip")
public class Recip {

@Id
@GeneratedValue
private Long recip_id;

@NotNull
private double quantity;

@NotNull
private double price;

private double quantity_item;

private String name;



@OneToMany(mappedBy = "recip", cascade = CascadeType.ALL)
private Set<Orders> orders;


@ManyToOne(fetch = FetchType.LAZY)
@JsonIgnore
@JoinColumn(name = "storeitem_storeitem_id", nullable = false)
private StoreItem storeItem;



public Long getRecip_id() {
    return recip_id;
}

public void setRecip_id(Long recip_id) {
    this.recip_id = recip_id;
}

public double getQuantity() {
    return quantity;
}

public void setQuantity(double quantity) {
    this.quantity = quantity;
}

public double getPrice() {
    return price;
}

public void setPrice(double price) {
    this.price = price;
}

public double getQuantity_item() {
    return quantity_item;
}

public void setQuantity_item(double quantity_item) {
    this.quantity_item = quantity_item;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public Set<Orders> getOrders() {
    return orders;
}

public void setOrders(Set<Orders> orders) {
    this.orders = orders;
}


public StoreItem getStoreItem() {
    return storeItem;
}

public void setStoreItem(StoreItem storeItem) {
    this.storeItem = storeItem;
}

}

和订单：

import com.fasterxml.jackson.annotation.JsonIgnore;

import javax.persistence.*;
import java.sql.Timestamp;

@Entity
public class Orders {

@Id
@GeneratedValue
private Long orders_id;

@Basic
private Timestamp date;

@JsonIgnore
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "recip_recip_id", nullable = false)

private Recip recip;


public Long getOrders_id() {
    return orders_id;
}

public void setOrders_id(Long orders_id) {
    this.orders_id = orders_id;
}

public Timestamp getDate() {
    return date;
}

public void setDate(Timestamp date) {
    this.date = date;
}


public Recip getRecip() {
    return recip;
}

public void setRecip(Recip recip) {
    this.recip = recip;
}

}

我需要获取的是双向OneToMany映射。目前，它以一种方式起作用。列出“ recip”中的数据时会得到什么：

[
  {
    "recip_id": 1,
    "quantity": 500,
    "price": 8.9,
    "quantity_item": 0.5,
    "name": "Carrot Juice",
    "orders": [
      {
        "orders_id": 1,
        "date": "2019-05-05T11:49:26.197+0000"
      }
    ]
  }
]

但是从订单中我只能得到：

[
  {
    "orders_id": 1,
    "date": "2019-05-05T11:49:26.197+0000"
  }
]

所以它不能以相反的方式工作。

对我来说，另一个问题是Angular（解决第一个问题之后）。我想在创建新订单时进行逻辑处理：列出所有食谱->从名称中选择食谱（例如胡萝卜汁）->将订单与食谱ID连接->将订单保存到数据库

如何在Spring中加入2个实体并在Angular中获取/发布数据

0 个答案: