From 02a8a0e41f4aae724f035a5b6ba91c360aa1b951 Mon Sep 17 00:00:00 2001
From: CeDo <cedoogle@gmail.com>
Date: 星期四, 10 六月 2021 17:10:17 +0800
Subject: [PATCH] Merge branch 'test_elder_cedoo' into test

---
 springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)

diff --git a/springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java b/springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java
index e02a10e..abec3c8 100644
--- a/springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java
+++ b/springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java
@@ -594,6 +594,54 @@
         }
     }
 
+    /**
+     * 日期相加减
+     * @param time
+     *             时间字符串 yyyy-MM-dd HH:mm:ss
+     * @param num
+     *             加的数,-num就是减去
+     * @return
+     *             减去相应的数量的年的日期
+     * @throws ParseException
+     */
+    public static Date yearAddNum(Date time, Integer num) {
+        //SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        //Date date = format.parse(time);
+
+        Calendar calendar = Calendar.getInstance();
+        calendar.setTime(time);
+        calendar.add(Calendar.YEAR, num);
+        Date newTime = calendar.getTime();
+        return newTime;
+    }
+
+    /**
+     * 将日期对象格式化成yyyy-MM-dd格式的字符串
+     *
+     * @param date         日期对象
+     * @return String
+     */
+    public static String getDateStringYMD(Date date) {
+
+        String dateString = "";
+        if (date != null) {
+            dateString = yyyyMMdd_format.format(date);
+        }
+        return dateString;
+    }
+
+    /**
+     * 获取当前月第一天
+     * @return
+     */
+    public static Date getFirstDayOfMonth() {
+        Calendar cal = Calendar.getInstance();
+        cal.add(Calendar.MONTH,0);
+        int actualMinimum = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
+        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY),actualMinimum,00,00,00);
+        return cal.getTime();
+    }
+
 
 
 
@@ -602,6 +650,7 @@
 //        Date date= new Date();
 //        Date after = new Date();
 //        System.out.println(calTimeDifference(date,after));
+        System.out.println(getFirstDayOfMonth());
 
     }
 }

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