给java项目添加预约功能代码
时间: 2023-06-07 22:06:52 浏览: 72
您好,关于为 Java 项目添加预约功能的代码,需要先了解您的具体需求以及项目结构和实现方式。预约功能可以涉及到用户信息、时间、预约内容等等,而不同的项目结构和实现方式也会有所不同。以下提供一些可能有帮助的思路和代码示例,仅供参考。
1. 普通预约功能的代码示例:
```Java
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
public class Reservation {
private Map<Date,String> reservationMap = new HashMap<>();
// 添加预约记录
public boolean addReservation(Date date, String content) {
if (reservationMap.containsKey(date)) {
// 时间已经被占用
return false;
} else {
reservationMap.put(date, content);
// 预约成功
return true;
}
}
// 取消预约
public boolean cancelReservation(Date date) {
if (reservationMap.containsKey(date)) {
reservationMap.remove(date);
// 取消成功
return true;
} else {
// 无该预约记录
return false;
}
}
// 查询预约
public String queryReservation(Date date) {
if (reservationMap.containsKey(date)) {
return reservationMap.get(date);
} else {
// 无该预约记录
return "";
}
}
}
```
2. 使用数据库存储预约信息的代码示例:
```Java
import java.sql.*;
public class Reservation {
private static String url = "jdbc:mysql://localhost:3306/reservation_system";
private static String username = "root";
private static String password = "123456";
// 添加预约记录
public static boolean addReservation(Date date, String content) {
boolean result = false;
try (Connection conn = DriverManager.getConnection(url, username, password)) {
String sql = "INSERT INTO reservation (date, content) VALUES (?, ?)";
PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setDate(1, date);
stmt.setString(2, content);
int rows = stmt.executeUpdate();
if (rows > 0) {
result = true;
}
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
// 取消预约
public static boolean cancelReservation(Date date) {
boolean result = false;
try (Connection conn = DriverManager.getConnection(url, username, password)) {
String sql = "DELETE FROM reservation WHERE date = ?";
PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setDate(1, date);
int rows = stmt.executeUpdate();
if (rows > 0) {
result = true;
}
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
// 查询预约
public static String queryReservation(Date date) {
String content = "";
try (Connection conn = DriverManager.getConnection(url, username, password)) {
String sql = "SELECT content FROM reservation WHERE date = ?";
PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setDate(1, date);
ResultSet rs = stmt.executeQuery();
if (rs.next()) {
content = rs.getString("content");
}
} catch (SQLException e) {
e.printStackTrace();
}
return content;
}
}
```
以上代码仅为示例,可能需要根据具体需求进行修改和完善。如有问题或需要进一步帮助,请随时联系我。