Java处理List分页
package com.ctsi.common.util; import java.util.List; /** * @author yk * @create 2020/10/12 15:44 * @description */ public class PageUtil { /** * 开始分页 * @param list * @param pageNum 页码 pageNum=0,起始页从0开始 * @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; } int fromIndex = 0; // 开始索引 int toIndex = 0; // 结束索引 if (pageNum != pageCount) { fromIndex = pageNum * pageSize; toIndex = fromIndex + pageSize; } else { fromIndex = (pageNum - 1) * pageSize; toIndex = count; } List pageList = list.subList(fromIndex, toIndex); return pageList; } }