List分页

List手动分页方法

public static List<?> tablePage(List<?> list, Integer pageBegin, Integer pageSize) {
        List<Object> result = new ArrayList<>();
        if (list != null && list.size() > 0) {
            int allCount = list.size();
            int pageCount = (allCount + pageSize - 1) / pageSize;
            if (pageBegin >= pageCount) {
                pageBegin = pageCount;
            }
            int start = (pageBegin - 1) * pageSize;
            int end = pageBegin * pageSize;
            if (end >= allCount) {
                end = allCount;
            }
            for (int i = start; i < end; i++) {
                result.add(list.get(i));
            }
        }
        return (result != null && result.size() > 0) ? result : null;
    }