学生管理系统缴费系统功能Java代码

抱歉，我并不能为您提供完整的代码，但我可以为您提供一些思路和建议。

对于学生管理系统和缴费系统这类功能较为复杂的系统，我们需要进行模块化设计，将功能分解为若干个小模块，然后再进行组合，形成一个完整的系统。

以下是一些常见的功能模块及其Java代码实现：

1. 学生信息管理模块

public class Student {
    private int id; // 学生编号
    private String name; // 学生姓名
    private int age; // 学生年龄
    private String gender; // 学生性别
    private String phone; // 学生电话号码
    
    // 构造函数
    public Student(int id, String name, int age, String gender, String phone) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.phone = phone;
    }
    
    // getter 和 setter 方法
    public int getId() {
        return id;
    }
    
    public void setId(int id) {
        this.id = id;
    }
    
    public String getName() {
        return name;
    }
    
    public void setName(String name) {
        this.name = name;
    }
    
    public int getAge() {
        return age;
    }
    
    public void setAge(int age) {
        this.age = age;
    }
    
    public String getGender() {
        return gender;
    }
    
    public void setGender(String gender) {
        this.gender = gender;
    }
    
    public String getPhone() {
        return phone;
    }
    
    public void setPhone(String phone) {
        this.phone = phone;
    }
}

2. 缴费信息管理模块

public class Payment {
    private int id; // 缴费编号
    private int studentId; // 学生编号
    private String paymentType; // 缴费类型
    private double paymentAmount; // 缴费金额
    private Date paymentDate; // 缴费日期
    
    // 构造函数
    public Payment(int id, int studentId, String paymentType, double paymentAmount, Date paymentDate) {
        this.id = id;
        this.studentId = studentId;
        this.paymentType = paymentType;
        this.paymentAmount = paymentAmount;
        this.paymentDate = paymentDate;
    }
    
    // getter 和 setter 方法
    public int getId() {
        return id;
    }
    
    public void setId(int id) {
        this.id = id;
    }
    
    public int getStudentId() {
        return studentId;
    }
    
    public void setStudentId(int studentId) {
        this.studentId = studentId;
    }
    
    public String getPaymentType() {
        return paymentType;
    }
    
    public void setPaymentType(String paymentType) {
        this.paymentType = paymentType;
    }
    
    public double getPaymentAmount() {
        return paymentAmount;
    }
    
    public void setPaymentAmount(double paymentAmount) {
        this.paymentAmount = paymentAmount;
    }
    
    public Date getPaymentDate() {
        return paymentDate;
    }
    
    public void setPaymentDate(Date paymentDate) {
        this.paymentDate = paymentDate;
    }
}

3. 数据库操作模块

public class DatabaseHelper {
    private Connection connection; // 数据库连接
    private Statement statement; // 数据库语句
    
    // 构造函数
    public DatabaseHelper(String url, String user, String password) throws SQLException {
        connection = DriverManager.getConnection(url, user, password);
        statement = connection.createStatement();
    }
    
    // 查询学生信息
    public List<Student> queryStudents() throws SQLException {
        List<Student> students = new ArrayList<Student>();
        ResultSet resultSet = statement.executeQuery("SELECT * FROM students");
        while (resultSet.next()) {
            int id = resultSet.getInt("id");
            String name = resultSet.getString("name");
            int age = resultSet.getInt("age");
            String gender = resultSet.getString("gender");
            String phone = resultSet.getString("phone");
            students.add(new Student(id, name, age, gender, phone));
        }
        return students;
    }
    
    // 查询缴费信息
    public List<Payment> queryPayments() throws SQLException {
        List<Payment> payments = new ArrayList<Payment>();
        ResultSet resultSet = statement.executeQuery("SELECT * FROM payments");
        while (resultSet.next()) {
            int id = resultSet.getInt("id");
            int studentId = resultSet.getInt("student_id");
            String paymentType = resultSet.getString("payment_type");
            double paymentAmount = resultSet.getDouble("payment_amount");
            Date paymentDate = resultSet.getDate("payment_date");
            payments.add(new Payment(id, studentId, paymentType, paymentAmount, paymentDate));
        }
        return payments;
    }
    
    // 插入学生信息
    public void insertStudent(Student student) throws SQLException {
        String sql = "INSERT INTO students (id, name, age, gender, phone) VALUES (?, ?, ?, ?, ?)";
        PreparedStatement statement = connection.prepareStatement(sql);
        statement.setInt(1, student.getId());
        statement.setString(2, student.getName());
        statement.setInt(3, student.getAge());
        statement.setString(4, student.getGender());
        statement.setString(5, student.getPhone());
        statement.executeUpdate();
    }
    
    // 插入缴费信息
    public void insertPayment(Payment payment) throws SQLException {
        String sql = "INSERT INTO payments (id, student_id, payment_type, payment_amount, payment_date) VALUES (?, ?, ?, ?, ?)";
        PreparedStatement statement = connection.prepareStatement(sql);
        statement.setInt(1, payment.getId());
        statement.setInt(2, payment.getStudentId());
        statement.setString(3, payment.getPaymentType());
        statement.setDouble(4, payment.getPaymentAmount());
        statement.setDate(5, new java.sql.Date(payment.getPaymentDate().getTime()));
        statement.executeUpdate();
    }
    
    // 关闭数据库连接
    public void close() throws SQLException {
        statement.close();
        connection.close();
    }
}

以上代码仅供参考，具体实现还需要根据具体需求进行调整和完善。