分页结果工具类

public class PageInfoUtil {

    /**
     * 获取分页结果
     *
     * @param pageBase
     * @param totalRecord
     * @param objData
     * @return
     */
    public static PageInfo getPageInfo(PageBase pageBase, int totalRecord, List objData) {
        //设置分页返回
        PageInfo pageInfo = new PageInfo(objData);

        int pageSize = pageBase.getPageSize();
        int size = objData.size();
        int pageNum = pageBase.getPageNum();
        //设置总数
        pageInfo.setTotal(totalRecord);
        //设置每页的显示条数
        pageInfo.setPageSize(pageSize);
        //设置要显示的是第几页的数据
        pageInfo.setPageNum(pageNum);
        pageInfo.setSize(size);
        //计算获取对应的要显示的数据
        int totalPages = 0;
        if (totalRecord % pageSize == 0) {
            totalPages = totalRecord / pageSize;
        } else {
            totalPages = totalRecord / pageSize + 1;
        }
        pageInfo.setPages(totalPages);


        //初始边界值计算
        long start = 0;
        if (pageNum == 1) {
            start = 0;
            pageInfo.setHasPreviousPage(false);
            pageInfo.setPrePage(0);
            pageInfo.setIsFirstPage(true);
        } else {
            start = pageInfo.getPageSize() * (pageInfo.getPageNum() - 1);
            pageInfo.setHasPreviousPage(true);
            pageInfo.setPrePage(pageNum - 1);
            pageInfo.setIsFirstPage(false);
        }
        pageInfo.setStartRow(start);

        //结束边界值计算
        long end = 0;
        if ((start + pageInfo.getPageSize() > pageInfo.getTotal())) {
            end = pageInfo.getTotal() - 1;
            pageInfo.setHasNextPage(false);
            pageInfo.setNextPage(pageNum);
            pageInfo.setIsLastPage(true);
        } else {
            end = start + pageInfo.getPageSize() - 1;
            pageInfo.setHasNextPage(true);
            pageInfo.setNextPage(pageNum + 1);
            pageInfo.setIsLastPage(false);
        }
        pageInfo.setEndRow(end);
        pageInfo.setNavigateFirstPage(1);
        pageInfo.setNavigateLastPage(pageInfo.getPages());
        pageInfo.setNavigatePages(pageInfo.getPages());
        return pageInfo;
    }
}