java中list集合分页操作

/**
 * 集合分页
 *
 * @param resourceList 要分页的集合
 * @param pageIndex    页码
 * @param pageSize     每页条数
 * @return 分页后的集合
 */
public List<CommoditiesWithBLOBs> getPageByList(List<CommoditiesWithBLOBs> resourceList, int pageIndex, int pageSize) {
    List<CommoditiesWithBLOBs> pageList = new ArrayList<>();
    if (pageIndex < 1) {
        pageIndex = 1;
    }
    int size = resourceList.size();
    int pageCount = size / pageSize;
    int fromIndex = (pageIndex - 1) * pageSize;
    int toIndex = fromIndex + pageSize;
    if (toIndex >= size) {
        toIndex = size;
    }
    if (pageIndex > pageCount + 1) {
        fromIndex = 0;
        toIndex = 0;
    }
    pageList = resourceList.subList( fromIndex, toIndex );
    return pageList;
}