显示客户

时间：2018-05-09 11:34:30

标签： mysql spring hibernate jsp spring-mvc

我正在为我的大学项目开发​​一个电子商务网站（Spring MVC，java，mySql，Hibernate）。我有各种模型，如客户，产品，订单，custOrderHistory等。

我能够显示所有客户详细信息（在管理页面中）以及供客户浏览的所有产品。

但我面临的问题是，如何显示客户的订单和订单历史记录？

我的订单表有orderId，productId，数量和总价。但为了显示产品名称，我必须使用productId并从产品表中恢复产品名称。

我不清楚如何做到这一点。

到目前为止，我正在使用jstl foreach循环来迭代productList.jsp页面中的产品并将其显示在表格中。 但正如我上面所说，我需要一次从3-4个表中检索数据，如productName（来自产品表），productManuacturer（也来自产品表），ShippingAddress（来自客户表）。我不确定如何做到这一点。

编辑1：我从其他人的计算机上问过这个问题，然后没有我的代码。 所以，我在这里给我的代码。

  1. Customer.java 

    package com.site.model;

import com.fasterxml.jackson.annotation.JsonIgnore;
import org.hibernate.validator.constraints.NotEmpty;
import javax.persistence.*;
import java.io.Serializable;

@Entity
public class Customer implements Serializable {

private static final long serialVersionUID = -3280023076408333682L;

@Id
@GeneratedValue
private int customerId;

@NotEmpty(message = "  The customer name must not be blank.")
private String customerName;

@NotEmpty (message = "  The customer email must not be blank.")
private String customerEmail;
private String customerPhone;

@NotEmpty (message = "  The username must not be blank.")
private String username;

@NotEmpty (message = "  The password must not be blank.")
private String password;
private boolean enabled;

@OneToOne
@JoinColumn(name = "billingAddressId")
private BillingAddress billingAddress;

@OneToOne
@JoinColumn(name = "shippingAddressId")
private ShippingAddress shippingAddress;

@OneToOne()
@JoinColumn(name = "cartId")
@JsonIgnore
private Cart cart;

public int getCustomerId() {
    return customerId;
}

public void setCustomerId(int customerId) {
    this.customerId = customerId;
}

public String getCustomerName() {
    return customerName;
}

public void setCustomerName(String customerName) {
    this.customerName = customerName;
}

public BillingAddress getBillingAddress() {
    return billingAddress;
}

public void setBillingAddress(BillingAddress billingAddress) {
    this.billingAddress = billingAddress;
}

public ShippingAddress getShippingAddress() {
    return shippingAddress;
}

public void setShippingAddress(ShippingAddress shippingAddress) {
    this.shippingAddress = shippingAddress;
}

public String getCustomerPhone() {
    return customerPhone;
}

public void setCustomerPhone(String customerPhone) {
    this.customerPhone = customerPhone;
}

public String getCustomerEmail() {
    return customerEmail;
}

public void setCustomerEmail(String customerEmail) {
    this.customerEmail = customerEmail;
}

public String getUsername() {
    return username;
}

public void setUsername(String username) {
    this.username = username;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

public boolean isEnabled() {
    return enabled;
}

public void setEnabled(boolean enabled) {
    this.enabled = enabled;
}

public Cart getCart() {
    return cart;
}

public void setCart(Cart cart) {
    this.cart = cart;
}

}

  2. Cart.java

    package com.site.model;

    import com.fasterxml.jackson.annotation.JsonIgnore;

    import javax.persistence。*; import java.io.Serializable; import java.util.ArrayList; import java.util.List;

    @Entity public class Cart实现了Serializable {

    private static final long serialVersionUID = -2479653100535233857L;

    @Id @GeneratedValue private int cartId;

    @OneToMany（mappedBy =＆＃34; cart＆＃34;，cascade = CascadeType.ALL，fetch = FetchType.EAGER） private List cartItems = new ArrayList（）;

    @OneToOne @JoinColumn（name =＆＃34; customerId＆＃34;） @JsonIgnore 私人客户;

    private double grandTotal;

    public int getCartId（）{     返回购物车; }

    public void setCartId（int cartId）{     this.cartId = cartId; }

    public double getGrandTotal（）{     return grandTotal; }

    public void setGrandTotal（double grandTotal）{     this.grandTotal = grandTotal; }

    public List getCartItems（）{     return cartItems; }

    public void setCartItems（List cartItems）{     this.cartItems = cartItems; }

    public Customer getCustomer（）{     回报客户; }

    public void setCustomer（Customer customer）{     this.customer = customer; }

    }

  3. CartItem.java 

    package com.site.model;

    import com.fasterxml.jackson.annotation.JsonIgnore;

    import javax.persistence。*; import java.io.Serializable; import java.util.List;

    @Entity public class CartItem实现了Serializable {

    private static final long serialVersionUID = -904360230041854157L;

@Id
@GeneratedValue
private int cartItemId;

@ManyToOne
@JoinColumn(name="cartId")
@JsonIgnore
private Cart cart;

@ManyToOne
@JoinColumn(name = "productId")
private Product product;
private int quantity;
private double totalPrice;

@ManyToMany(cascade=CascadeType.ALL, mappedBy="cartItems")
@JsonIgnore
private List<OrderHistory> orderHistoryList;

public int getCartItemId() {
    return cartItemId;
}

public void setCartItemId(int cartItemId) {
    this.cartItemId = cartItemId;
}

public Product getProduct() {
    return product;
}

public void setProduct(Product product) {
    this.product = product;
}

public int getQuantity() {
    return quantity;
}

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

public double getTotalPrice() {
    return totalPrice;
}

public void setTotalPrice(double totalPrice) {
    this.totalPrice = totalPrice;
}

public Cart getCart() {
    return cart;
}

public void setCart(Cart cart) {
    this.cart = cart;
}

public List<OrderHistory> getOrderHistoryList() {
    return orderHistoryList;
}

public void setOrderHistoryList(List<OrderHistory> orderHistoryList) {
    this.orderHistoryList = orderHistoryList;
}
}

  4. CustomerOrder.java 

    package com.site.model;

    import javax.persistence。*; import java.io.Serializable;

    @Entity 公共类CustomerOrder实现Serializable {

    private static final long serialVersionUID = -3608286390950243118L;

@Id
@GeneratedValue
private int customerOrderId;

@OneToOne
@JoinColumn(name = "cartId")
private Cart cart;

@OneToOne
@JoinColumn(name = "customerId")
private Customer customer;

@OneToOne
@JoinColumn(name = "billingAddressId")
private BillingAddress billingAddress;

@OneToOne
@JoinColumn(name = "shippingAddressId")
private ShippingAddress shippingAddress;


public int getCustomerOrderId() {
    return customerOrderId;
}

public void setCustomerOrderId(int customerOrderId) {
    this.customerOrderId = customerOrderId;
}

public Cart getCart() {
    return cart;
}

public void setCart(Cart cart) {
    this.cart = cart;
}

public Customer getCustomer() {
    return customer;
}

public void setCustomer(Customer customer) {
    this.customer = customer;
}

public BillingAddress getBillingAddress() {
    return billingAddress;
}

public void setBillingAddress(BillingAddress billingAddress) {
    this.billingAddress = billingAddress;
}

public ShippingAddress getShippingAddress() {
    return shippingAddress;
}

public void setShippingAddress(ShippingAddress shippingAddress) {
    this.shippingAddress = shippingAddress;
}

}

  5. OrderHistory.java

    package com.site.model;

    import javax.persistence。*; import java.io.Serializable; import java.util.ArrayList; import java.util.List;

    @Entity 公共类OrderHistory实现Serializable {

    private static final long serialVersionUID = 1083533250613139445L;

@Id
@GeneratedValue
private int orderHistoryId;
private int customerId;
private String customerName;
private int customerOrderId;
private int cartId;

@ManyToMany(cascade = CascadeType.ALL)
@JoinTable(name = "cartItem_orderHistory", joinColumns = @JoinColumn(name = "orderHistoryId"),
        inverseJoinColumns = @JoinColumn
                (name = "cartItemId"))
private List<CartItem> cartItems = new ArrayList<CartItem>();
private double grandTotal;
private String billingAddress;
private String shippingAddress;

public int getOrderHistoryId() {
    return orderHistoryId;
}

public void setOrderHistoryId(int orderHistoryId) {
    this.orderHistoryId = orderHistoryId;
}

public int getCustomerId() {
    return customerId;
}

public void setCustomerId(int customerId) {
    this.customerId = customerId;
}

public String getCustomerName() {
    return customerName;
}

public void setCustomerName(String customerName) {
    this.customerName = customerName;
}

public int getCustomerOrderId() {
    return customerOrderId;
}

public void setCustomerOrderId(int customerOrderId) {
    this.customerOrderId = customerOrderId;
}

public int getCartId() {
    return cartId;
}

public void setCartId(int cartId) {
    this.cartId = cartId;
}

public List<CartItem> getCartItems() {
    return cartItems;
}

public void setCartItems(List<CartItem> cartItems) {
    this.cartItems = cartItems;
}

public double getGrandTotal() {
    return grandTotal;
}

public void setGrandTotal(double grandTotal) {
    this.grandTotal = grandTotal;
}

public String getBillingAddress() {
    return billingAddress;
}

public void setBillingAddress(String billingAddress) {
    this.billingAddress = billingAddress;
}

public String getShippingAddress() {
    return shippingAddress;
}

public void setShippingAddress(String shippingAddress) {
    this.shippingAddress = shippingAddress;
}
}

    6. 编辑2：如何将数据存储在ustomerorder表和orderhistory表中，以及如何在jsp页面上显示它？

2 个答案:

答案 0 :(得分：3)

您应该在订单表中有一个CustomerId列，用于检测订单与哪个客户相关联。只需在其中插入登录的用户ID并通过与客户表进行联接来获取客户名称。

答案 1 :(得分：0)

您的订单表中应该有customerid。这样您就可以通过提供customerid来获取客户的订单历史记录。

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