如何利用MySQL和Java開發一個簡單的線上餐廳預訂系統
在今天的社會中,隨著科技的不斷發展,越來越多的業務開始向線上遷移。其中,餐飲業也積極跟隨潮流,開始推出線上訂餐和訂座系統,以方便顧客預約用餐。在本文中,將介紹如何利用MySQL和Java開發一個簡單的線上餐廳訂座系統。
首先,我們需要設計一個合適的資料庫來儲存餐廳、桌位以及顧客的資訊。以下是一個簡單的資料庫設計範例:
餐廳表格:restaurant
桌位表:table
#客戶表:customer
#訂位表:reservation
@Entity @Table(name = "restaurant") public class Restaurant { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private String address; // getters and setters }
@Entity @Table(name = "table") public class Table { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ManyToOne @JoinColumn(name = "restaurant_id") private Restaurant restaurant; private String number; private int capacity; // getters and setters }
@Entity @Table(name = "customer") public class Customer { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private String phone; // getters and setters }
@Entity @Table(name = "reservation") public class Reservation { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @ManyToOne @JoinColumn(name = "table_id") private Table table; @ManyToOne @JoinColumn(name = "customer_id") private Customer customer; private Date reservationTime; // getters and setters }
<!DOCTYPE html> <html> <head> <title>在线餐厅订座系统</title> <style> /* CSS样式代码 */ </style> </head> <body> <h1>在线餐厅订座系统</h1> <form> <!-- 表单代码 --> </form> <table> <!-- 用餐列表代码 --> </table> <script> // JavaScript代码 </script> </body> </html>
document.querySelector('form').addEventListener('submit', function(e) { e.preventDefault(); var tableId = document.getElementById('tableId').value; var name = document.getElementById('name').value; var phone = document.getElementById('phone').value; var data = { tableId: tableId, name: name, phone: phone }; // 发送Ajax请求 var xhr = new XMLHttpRequest(); xhr.open('POST', '/reservation', true); xhr.setRequestHeader('Content-Type', 'application/json'); xhr.send(JSON.stringify(data)); xhr.onreadystatechange = function() { if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) { // 处理响应数据 } }; });
/reservation介面。
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