设计一个订单类[Order],包含如下属性: id 订单编号【内部生成,规则另定,此属性值由后面提供的订单号生成器类来生成】 订单费用 下单时间 出货时间 订单状态 所属客户[Customer] 要求:生成 构造、getter/setter、hashCode和equals方法,以及toString方法。注:在toString方法中不要出现 customer属性
时间: 2024-02-11 22:09:45 浏览: 180
ejb3.0 注解 其中一部分
好的,根据您的要求,我设计的代码如下:
```java
public class Order {
private String id; // 订单编号
private double fee; // 订单费用
private LocalDateTime orderTime; // 下单时间
private LocalDateTime shipTime; // 出货时间
private String status; // 订单状态
private Customer customer; // 所属客户
public Order(double fee, LocalDateTime orderTime, LocalDateTime shipTime, String status, Customer customer) {
this.id = OrderNumberGenerator.generateOrderNumber(); // 调用订单号生成器生成订单编号
this.fee = fee;
this.orderTime = orderTime;
this.shipTime = shipTime;
this.status = status;
this.customer = customer;
}
// getter和setter方法
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public double getFee() {
return fee;
}
public void setFee(double fee) {
this.fee = fee;
}
public LocalDateTime getOrderTime() {
return orderTime;
}
public void setOrderTime(LocalDateTime orderTime) {
this.orderTime = orderTime;
}
public LocalDateTime getShipTime() {
return shipTime;
}
public void setShipTime(LocalDateTime shipTime) {
this.shipTime = shipTime;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Customer getCustomer() {
return customer;
}
public void setCustomer(Customer customer) {
this.customer = customer;
}
// hashCode和equals方法
@Override
public int hashCode() {
return Objects.hash(id, fee, orderTime, shipTime, status);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof Order)) {
return false;
}
Order order = (Order) obj;
return Double.compare(order.fee, fee) == 0 &&
Objects.equals(id, order.id) &&
Objects.equals(orderTime, order.orderTime) &&
Objects.equals(shipTime, order.shipTime) &&
Objects.equals(status, order.status);
}
// toString方法,不包含customer属性
@Override
public String toString() {
return "Order{" +
"id='" + id + '\'' +
", fee=" + fee +
", orderTime=" + orderTime +
", shipTime=" + shipTime +
", status='" + status + '\'' +
'}';
}
}
```
其中,订单编号id是通过OrderNumberGenerator类生成的,它的代码如下:
```java
public class OrderNumberGenerator {
private static int orderCount = 0; // 统计订单数量
/**
* 生成订单编号
*/
public static String generateOrderNumber() {
orderCount++; // 订单数量加1
LocalDateTime now = LocalDateTime.now();
String dateStr = now.format(DateTimeFormatter.ofPattern("yyyyMMdd"));
String orderCountStr = String.format("%04d", orderCount);
return "O" + dateStr + orderCountStr;
}
}
```
这里的订单编号规则是:以字母O开头,后面跟上年月日和4位数字,数字部分从1开始,每生成一个订单编号,数字部分就加1。例如,2022年1月1日生成的第1个订单编号为O202201010001,第2个订单编号为O202201010002,以此类推。
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