若依框架的分页插件满足不了需求时,进行自定义分页

//创建工具类,
public class PaginationUtil {
    public static <T> TableDataInfo getPageInfo(List<T> list,Integer currentPage,Integer pageSize) {
        int total = list.size();
        if (total > pageSize) {
            int toIndex = pageSize * currentPage;
            if (toIndex > total) {
                toIndex = total;
            }
            list = list.subList(pageSize * (currentPage - 1), toIndex);
        }
        Page<T> page = new Page<>(currentPage, pageSize);
        page.addAll(list);
        page.setPages((total + pageSize - 1) / pageSize);
        page.setTotal(total);

        PageInfo<T> pageInfo = new PageInfo<>(page);

        TableDataInfo rspData = new TableDataInfo();
        rspData.setRows(list);
        rspData.setTotal(pageInfo.getTotal());
        return rspData;
    }
}
//使用:先查询出所有的数据,再调用方法进行分页