From 5d7b65670282a4fad015e37d567cfa171b162052 Mon Sep 17 00:00:00 2001
From: huliguo <2023611923@qq.com>
Date: 星期二, 20 五月 2025 12:25:19 +0800
Subject: [PATCH] 基础代码
---
pt-errand/src/main/java/com/ruoyi/errand/utils/PaymentCycleHelper.java | 200 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 200 insertions(+), 0 deletions(-)
diff --git a/pt-errand/src/main/java/com/ruoyi/errand/utils/PaymentCycleHelper.java b/pt-errand/src/main/java/com/ruoyi/errand/utils/PaymentCycleHelper.java
new file mode 100644
index 0000000..9e25b86
--- /dev/null
+++ b/pt-errand/src/main/java/com/ruoyi/errand/utils/PaymentCycleHelper.java
@@ -0,0 +1,200 @@
+package com.ruoyi.errand.utils;
+
+import cn.hutool.core.date.DateUtil;
+
+import java.text.SimpleDateFormat;
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+
+public class PaymentCycleHelper {
+
+ // 格式化日期为 "yyyy-MM"
+ private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
+
+ // 根据 25% 首付款支付时间计算首笔付款周期
+ public static String getFirstPaymentCycle(Date firstPaymentDate) {
+ Calendar calendar = Calendar.getInstance();
+ calendar.setTime(firstPaymentDate);
+
+ int month = calendar.get(Calendar.MONTH) + 1; // 获取月份（1-12）
+
+ if (month >= 10 && month <= 12) {
+ // 10月-12月，首笔付款周期为次年1月
+ calendar.add(Calendar.YEAR, 1);
+ calendar.set(Calendar.MONTH, Calendar.JANUARY); // 设置为1月
+ } else if (month >= 1 && month <= 3) {
+ // 1月-3月，首笔付款周期为当年4月
+ calendar.set(Calendar.MONTH, Calendar.APRIL);
+ } else if (month >= 4 && month <= 6) {
+ // 4月-6月，首笔付款周期为当年7月
+ calendar.set(Calendar.MONTH, Calendar.JULY);
+ } else if (month >= 7 && month <= 9) {
+ // 7月-9月，首笔付款周期为当年10月
+ calendar.set(Calendar.MONTH, Calendar.OCTOBER);
+ }
+
+ // 返回首笔付款周期格式 "yyyy-MM"
+ return sdf.format(calendar.getTime());
+ }
+
+ public static String getCurrentQuarter(Date date) {
+ Calendar calendar = Calendar.getInstance();
+ calendar.setTime(date);
+
+ int year = calendar.get(Calendar.YEAR);
+ int month = calendar.get(Calendar.MONTH) + 1; // 获取月份（1-12）
+
+ // 计算当前季度的起始月份
+ int quarterStartMonth = ((month - 1) / 3) * 3 + 1;
+
+ return String.format("%d-%02d", year, quarterStartMonth);
+ }
+
+ /**
+ * 获取季度信息
+ * @param date
+ * @param offset
+ * @return
+ */
+ public static String getQuarterByOffset(Date date, int offset) {
+ Calendar calendar = Calendar.getInstance();
+ calendar.setTime(date);
+
+ int year = calendar.get(Calendar.YEAR);
+ int month = calendar.get(Calendar.MONTH) + 1; // Java中月份是从0开始的
+
+ // 当前季度索引：0（Q1），1（Q2），2（Q3），3（Q4）
+ int currentQuarter = (month - 1) / 3;
+
+ // 计算目标季度的索引
+ int targetQuarter = currentQuarter + offset;
+
+ // 处理跨年情况
+ year += targetQuarter / 4;
+ targetQuarter = (targetQuarter % 4 + 4) % 4; // 保证结果在0~3之间
+
+ // 获取目标季度的起始月份
+ int quarterStartMonth = targetQuarter * 3 + 1;
+
+ return String.format("%d-%02d", year, quarterStartMonth);
+ }
+
+ // 根据首笔付款日期往后推 20 期，计算分期支付周期
+ public static String getQuarterlyPaymentCycles(Date firstPaymentDate) {
+ Calendar calendar = Calendar.getInstance();
+ calendar.setTime(firstPaymentDate);
+
+ // 获取首笔付款周期
+ String firstPaymentCycle = getFirstPaymentCycle(firstPaymentDate);
+ try {
+ calendar.setTime(sdf.parse(firstPaymentCycle)); // 将首笔付款周期解析为日期
+ } catch (Exception e) {
+ e.printStackTrace();
+ return "";
+ }
+
+ // 往后推 20 期，每期为3个月
+ String[] paymentCycles = new String[20];
+ for (int i = 0; i < 20; i++) {
+ paymentCycles[i] = sdf.format(calendar.getTime());
+ calendar.add(Calendar.MONTH, 3); // 每次增加 3 个月
+ }
+
+ return String.join(",", Arrays.asList(paymentCycles));
+ }
+
+ // 根据当前季度首笔付款日期往后推 20 期，计算分期支付周期
+ public static List<String> getQuarterlyPaymentCyclesList(Date firstPaymentDate) {
+ Calendar calendar = Calendar.getInstance();
+ calendar.setTime(firstPaymentDate);
+
+ // 获取首笔付款周期
+ String firstPaymentCycle = getCurrentQuarter(firstPaymentDate);
+ try {
+ calendar.setTime(sdf.parse(firstPaymentCycle)); // 将首笔付款周期解析为日期
+ } catch (Exception e) {
+ e.printStackTrace();
+ return null;
+ }
+
+ // 往后推 20 期，每期为3个月
+ String[] paymentCycles = new String[20];
+ for (int i = 0; i < 20; i++) {
+ paymentCycles[i] = sdf.format(calendar.getTime());
+ calendar.add(Calendar.MONTH, 3); // 每次增加 3 个月
+ }
+ return Arrays.asList(paymentCycles);
+ }
+
+
+ // 根据首笔付款日期往后推 4 期，计算分期支付周期
+ public static List<String> getQuarterlyPaymentCyclesFour(Date firstPaymentDate) {
+ Calendar calendar = Calendar.getInstance();
+ calendar.setTime(firstPaymentDate);
+
+ // 获取首笔付款周期
+ String firstPaymentCycle = getFirstPaymentCycle(firstPaymentDate);
+ try {
+ calendar.setTime(sdf.parse(firstPaymentCycle)); // 将首笔付款周期解析为日期
+ } catch (Exception e) {
+ e.printStackTrace();
+ return null;
+ }
+
+ // 往后推 20 期，每期为3个月
+ String[] paymentCycles = new String[4];
+ for (int i = 0; i < 4; i++) {
+ paymentCycles[i] = sdf.format(calendar.getTime());
+ calendar.add(Calendar.MONTH, 3); // 每次增加 3 个月
+ }
+ return Arrays.asList(paymentCycles);
+ }
+
+ /**
+ * 计算 25% 首付款支付时间属于 20 期中的第几期
+ *
+ * @param firstPaymentDate 25% 首付款支付时间（Date 类型）
+ * @return 期数（1~20），超出则返回 -1
+ */
+ public static int getPaymentPeriod(Date firstPaymentDate) {
+ //判断时间超过5年，则直接返回20
+ long month = DateUtil.betweenMonth(new Date(),firstPaymentDate,true);
+ if(month >= 60){
+ return 20;
+ }
+ List<String> times = getQuarterlyPaymentCyclesList(firstPaymentDate);
+
+ //获取当前日期季度
+ String current = getCurrentQuarter(new Date());
+
+ // 计算当前属于哪一期
+ for (int i = 0; i <= times.size(); i++) {
+ String itemTime = times.get(i);
+ if (itemTime.equals(current)) {
+ return i;
+ }
+ }
+ // 如果当前日期超出 20 期，则返回 -1
+ return 0;
+ }
+
+ /**
+ * 将 Date 转换为 LocalDate
+ *
+ * @param date Date 类型的日期
+ * @return LocalDate 类型的日期
+ */
+ private static LocalDate convertToLocalDate(Date date) {
+ return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
+ }
+
+
+ public static void main(String[] args) {
+ System.out.println(getPaymentPeriod(DateUtil.parseDate(" 2023-10-03")));;
+ }
+
+}
--
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