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/SortData.java | 65 ++++++++++++++++++++++++++++++++
1 files changed, 65 insertions(+), 0 deletions(-)
diff --git a/src/main/java/com/gk/firework/Domain/Vo/SortData.java b/src/main/java/com/gk/firework/Domain/Vo/SortData.java
new file mode 100644
index 0000000..a4c984c
--- /dev/null
+++ b/src/main/java/com/gk/firework/Domain/Vo/SortData.java
@@ -0,0 +1,65 @@
+package com.gk.firework.Domain.Vo;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.lang.reflect.Field;
+import java.util.Comparator;
+
+
+public class SortData {
+ 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 {
+ Field field1 = o1.getClass().getDeclaredField(param);
+ Field field2 = o2.getClass().getDeclaredField(param);
+ field1.setAccessible(true);
+ field2.setAccessible(true);
+// if(null == field1.get(o1) || null == field2.get(o2)){
+// return 0;
+// }
+ if((Integer)field1.get(o1)<(Integer)field2.get(o2)){
+ return 1;
+ }else if((Integer)field1.get(o1)>(Integer)field2.get(o2)){
+ 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;
+ }
+
+ public List<?> Pagination(Integer pageNum, Integer pageSize, List<?> dataList) {
+ Integer totalCount = dataList.size();
+ List<?> result = new ArrayList<>();
+ if (pageSize != null) {
+ // 默认页面大小为10
+ pageSize = pageSize > 0 ? pageSize : 10;
+ }
+ if (pageNum != null) {
+ pageNum = pageNum > 0 ? pageNum : 0;
+ }
+
+ Integer beginindex = (pageNum-1)*pageSize;
+ Integer endindex = pageNum * pageSize < totalCount ? pageNum * pageSize : totalCount;
+
+ result = dataList.subList(beginindex,endindex);
+ return result;
+ }
+
+}
--
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