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如何利用MySQL和Java開發一個簡單的在線醫院預約平臺

隨著社會發展和醫療水平提高，人們對醫療資源的需求也越來越大。為了滿足人們的就醫需求，開發一個簡單的在線醫院預約平臺顯得十分必要。本文將介紹如何利用MySQL和Java來實現這一目標，并提供具體的代碼示例。

數據庫設計

首先需要設計數據庫的結構，以存儲醫院、科室、醫生和預約等信息。一個簡單的數據庫設計如下：

1.1 醫院表(hospital)
字段：id, name, address, phone

1.2 科室表(department)
字段：id, hospital_id, name

1.3 醫生表(doctor)
字段：id, department_id, name, title, introduction

1.4 預約表(appointment)
字段：id, doctor_id, patient_name, patient_phone, appointment_date

數據庫連接

在Java中，我們可以使用JDBC來連接MySQL數據庫。下面是一個簡單的數據庫連接代碼示例：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DatabaseUtil {
    private static final String URL = "jdbc:mysql://localhost:3306/hospital";
    private static final String USERNAME = "root";
    private static final String PASSWORD = "password";

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(URL, USERNAME, PASSWORD);
    }
}

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查詢醫院和科室信息

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class HospitalDao {
    public List<Hospital> getAllHospitals() {
        List<Hospital> hospitals = new ArrayList<>();
        String sql = "SELECT * FROM hospital";
        try (Connection connection = DatabaseUtil.getConnection();
             PreparedStatement statement = connection.prepareStatement(sql);
             ResultSet resultSet = statement.executeQuery()) {
            while (resultSet.next()) {
                Hospital hospital = new Hospital();
                hospital.setId(resultSet.getInt("id"));
                hospital.setName(resultSet.getString("name"));
                hospital.setAddress(resultSet.getString("address"));
                hospital.setPhone(resultSet.getString("phone"));
                hospitals.add(hospital);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return hospitals;
    }

    public List<Department> getDepartmentsByHospitalId(int hospitalId) {
        List<Department> departments = new ArrayList<>();
        String sql = "SELECT * FROM department WHERE hospital_id = ?";
        try (Connection connection = DatabaseUtil.getConnection();
             PreparedStatement statement = connection.prepareStatement(sql)) {
            statement.setInt(1, hospitalId);
            try (ResultSet resultSet = statement.executeQuery()) {
                while (resultSet.next()) {
                    Department department = new Department();
                    department.setId(resultSet.getInt("id"));
                    department.setHospitalId(hospitalId);
                    department.setName(resultSet.getString("name"));
                    departments.add(department);
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return departments;
    }
}

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查詢醫生信息

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DoctorDao {
    public List<Doctor> getDoctorsByDepartmentId(int departmentId) {
        List<Doctor> doctors = new ArrayList<>();
        String sql = "SELECT * FROM doctor WHERE department_id = ?";
        try (Connection connection = DatabaseUtil.getConnection();
             PreparedStatement statement = connection.prepareStatement(sql)) {
            statement.setInt(1, departmentId);
            try (ResultSet resultSet = statement.executeQuery()) {
                while (resultSet.next()) {
                    Doctor doctor = new Doctor();
                    doctor.setId(resultSet.getInt("id"));
                    doctor.setDepartmentId(departmentId);
                    doctor.setName(resultSet.getString("name"));
                    doctor.setTitle(resultSet.getString("title"));
                    doctor.setIntroduction(resultSet.getString("introduction"));
                    doctors.add(doctor);
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return doctors;
    }
}

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創建預約

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Date;

public class AppointmentDao {
    public void createAppointment(int doctorId, String patientName, String patientPhone, Date appointmentDate) {
        String sql = "INSERT INTO appointment (doctor_id, patient_name, patient_phone, appointment_date) " +
                "VALUES (?, ?, ?, ?)";
        try (Connection connection = DatabaseUtil.getConnection();
             PreparedStatement statement = connection.prepareStatement(sql)) {
            statement.setInt(1, doctorId);
            statement.setString(2, patientName);
            statement.setString(3, patientPhone);
            statement.setDate(4, new java.sql.Date(appointmentDate.getTime()));
            statement.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

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以上代碼示例演示了如何使用MySQL和Java開發一個簡單的在線醫院預約平臺。通過數據庫設計和對應的Java代碼，我們可以實現醫院、科室、醫生和預約等信息的查詢和創建。當然，這只是一個簡單的示例，實際開發中還需考慮更多的功能和優化。希望本文能給讀者帶來一些啟發，而實際開發中需要結合具體需求進行詳細設計和實現。

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