如何使用Java编写CMS系统的数据分页模块

public class Pageable {
    private int totalRecords; // 总记录数
    private int totalPages; // 总页数
    private int recordsPerPage; // 每页显示的记录数
    private int currentPage; // 当前页数

    // 构造方法
    public Pageable(int totalRecords, int recordsPerPage, int currentPage) {
        this.totalRecords = totalRecords;
        this.recordsPerPage = recordsPerPage;
        this.currentPage = currentPage;
        this.totalPages = PaginationUtils.calculateTotalPages(totalRecords, recordsPerPage);
    }
    
    // getter和setter方法
    // ...
}

public class PaginationUtils {
    // 计算总页数
    public static int calculateTotalPages(int totalRecords, int recordsPerPage) {
        return (int) Math.ceil((double) totalRecords / recordsPerPage);
    }
    
    // 验证页数是否合法
    public static boolean isValidPage(int currentPage, int totalPages) {
        return currentPage > 0 && currentPage <= totalPages;
    }
    
    // 省略其他辅助方法
}

public class PaginatedData<T> {
    private List<T> dataList; // 每页的数据
    private Pageable pageable; // 分页信息

    // 构造方法
    public PaginatedData(List<T> dataList, Pageable pageable) {
        this.dataList = dataList;
        this.pageable = pageable;
    }
    
    // getter和setter方法
    // ...
}