From 2fcd97552d16718cc7997629fd637a73a5a4483f Mon Sep 17 00:00:00 2001 From: 郑永安 <zyazyz250@sina.com> Date: 星期一, 19 六月 2023 14:44:19 +0800 Subject: [PATCH] 删除 --- src/main/java/com/gk/firework/Domain/Vo/SortTime.java | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 59 insertions(+), 0 deletions(-) diff --git a/src/main/java/com/gk/firework/Domain/Vo/SortTime.java b/src/main/java/com/gk/firework/Domain/Vo/SortTime.java new file mode 100644 index 0000000..abbd3be --- /dev/null +++ b/src/main/java/com/gk/firework/Domain/Vo/SortTime.java @@ -0,0 +1,59 @@ +package com.gk.firework.Domain.Vo; + +import java.text.SimpleDateFormat; +import java.util.Collections; +import java.util.Date; +import java.util.List; +import java.lang.reflect.Field; +import java.util.Comparator; + + +public class SortTime { + public List<?> sortByInt(List<?> list, final String param ,Byte order){ + //自定义Comparator对象,自定义排序 + Comparator c = new Comparator() { + @Override + public int compare(Object o1, Object o2) { + try { + SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); + Field field1 = o1.getClass().getDeclaredField(param); + Field field2 = o2.getClass().getDeclaredField(param); + field1.setAccessible(true); + field2.setAccessible(true); + Date date1 = null; + Date date2 = null; + try { + date1 = (Date)field1.get(o1); + }catch (Exception e){ + e.printStackTrace(); + } + try { + date2 = (Date) field2.get(o2); + }catch (Exception e){ + e.printStackTrace(); + } + + if((int)date1.getTime() < (int) date2.getTime()){ + return 1; + }else if((int)date1.getTime() > (int) date2.getTime()){ + return -1; + }else { + return 0; + } + //注意!!返回值必须是一对相反数,否则无效。jdk1.7以后就是这样。 + } catch (Exception e) { + e.printStackTrace(); + } + return 1; + } + }; + if(order == 1){ + Collections.sort(list, c); + }else { + Collections.sort(list, c.reversed()); + } + + return list; + } + +} -- Gitblit v1.9.2