List分页：

/*** list分页** @author cfx* @date 2020-5-21 10:17:37*/
public class PageListUtil {/*** 开始分页** @param list* @param pageNum  页码* @param pageSize 每页多少条数据* @return*/public static List startPage(List list, Integer pageNum, Integer pageSize) {if (list == null) {return null;}if (list.size() == 0) {return null;}Integer count = list.size(); // 记录总数Integer pageCount = 0; // 页数if (count % pageSize == 0) {pageCount = count / pageSize;} else {pageCount = count / pageSize + 1;}int fromIndex = 0; // 开始索引int toIndex = 0; // 结束索引if (!pageNum.equals(pageCount)) {fromIndex = (pageNum - 1) * pageSize;toIndex = fromIndex + pageSize;} else {fromIndex = (pageNum - 1) * pageSize;toIndex = count;}List pageList = list.subList(fromIndex, toIndex);return pageList;}
}