From 14c03b65ebfc62d32bcfeff2c1b4338247b50729 Mon Sep 17 00:00:00 2001
From: whycxzp <glperry@163.com>
Date: 星期五, 13 六月 2025 16:54:51 +0800
Subject: [PATCH] 蓄电池核容测试信息统计
---
src/main/java/com/whyc/util/DateUtil.java | 64 ++++++++++++++++++-------------
1 files changed, 37 insertions(+), 27 deletions(-)
diff --git a/src/main/java/com/whyc/util/DateUtil.java b/src/main/java/com/whyc/util/DateUtil.java
index 7421971..2e9a81d 100644
--- a/src/main/java/com/whyc/util/DateUtil.java
+++ b/src/main/java/com/whyc/util/DateUtil.java
@@ -2,6 +2,10 @@
import java.text.ParseException;
import java.text.SimpleDateFormat;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.temporal.TemporalAdjusters;
import java.util.*;
/**
@@ -704,33 +708,39 @@
}
- public static void main(String[] args) throws ParseException {
- //Date d1 = YYYY_MM_DD_HH_MM_SS.parse("2023-01-22 14:12:22");
- //Date d2 = YYYY_MM_DD_HH_MM_SS.parse("2023-08-24 16:45:22");
- //Map<String, List<Date>> monthListDesc = getQueryTimeForSubTablesByMonthDesc(d1, d2);
- //
- //Set<Map.Entry<String, List<Date>>> entries = monthListDesc.entrySet();
- //for (Map.Entry<String, List<Date>> entry : entries) {
- // System.out.println(entry);
- //}
- //Map<String,String> map = new HashMap<>();
- //map.put("2022_01","");
- //map.put("2022_02","");
- //map.put("2022_10","");
- //map.put("2022_12","");
- //map.put("2021_03","");
- //map.put("2023_01","");
- //map.put("2023_05","");
- //map.put("2021_10","");
- //Set<String> keySet = map.keySet();
- //List<String> keySetDesc = keySet.stream().sorted(Comparator.comparing(String::hashCode).reversed()).collect(Collectors.toList());
- String t1 = "2024-01-25 12:22:29";
- String t2 = "2024-01-25 12:32:24";
- String t3 = "2024-01-25 12:42:26";
- Date maxTime = getMaxTime(t1, t2, t3);
- System.out.println(maxTime.toString());
-
-
+ /**
+ * 鑾峰彇鏈勾鐨勫紑濮嬫椂闂�
+ */
+ public static LocalDateTime getStartOfYear() {
+ LocalDateTime now = LocalDateTime.now();
+ return now.with(TemporalAdjusters.firstDayOfYear()).with(LocalDateTime.MIN.toLocalTime());
}
+ /**
+ * 鑾峰彇鏈搴︾殑寮�濮嬫椂闂�
+ */
+ public static LocalDateTime getStartOfQuarter() {
+ LocalDateTime now = LocalDateTime.now();
+ int currentMonthValue = now.getMonthValue();
+ // 璁＄畻褰撳墠瀛ｅ害鐨勭涓�涓湀
+ int quarterStartMonth = 3 * ((currentMonthValue - 1) / 3) + 1;
+ return LocalDate.of(now.getYear(), quarterStartMonth, 1).atStartOfDay();
+ }
+
+ /**
+ * 鑾峰彇鏈湀鐨勫紑濮嬫椂闂�
+ */
+ public static LocalDateTime getStartOfMonth() {
+ LocalDateTime now = LocalDateTime.now();
+ return now.with(TemporalAdjusters.firstDayOfMonth()).with(LocalDateTime.MIN.toLocalTime());
+ }
+
+ /**
+ * Date 杞� LocalDateTime 宸ュ叿鏂规硶
+ */
+ public static LocalDateTime convertToLocalDateTime(java.util.Date date) {
+ return date.toInstant()
+ .atZone(ZoneId.systemDefault())
+ .toLocalDateTime();
+ }
}
--
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