若依 3.1

ruoyi-common/src/main/java/com/ruoyi/common/utils/DateUtils.java

@@ -1,5 +1,6 @@
 package com.ruoyi.common.utils;
 
+import java.lang.management.ManagementFactory;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
@@ -120,4 +121,35 @@ public class DateUtils extends org.apache.commons.lang3.time.DateUtils
             return null;
         }
     }
+    
+    /**
+     * 获取服务器启动时间
+     */
+    public static Date getServerStartDate()
+    {
+        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
+        return new Date(time);
+    }
+
+    /**
+     * 计算两个时间差
+     */
+    public static String getDatePoor(Date endDate, Date nowDate)
+    {
+        long nd = 1000 * 24 * 60 * 60;
+        long nh = 1000 * 60 * 60;
+        long nm = 1000 * 60;
+        // long ns = 1000;
+        // 获得两个时间的毫秒时间差异
+        long diff = endDate.getTime() - nowDate.getTime();
+        // 计算差多少天
+        long day = diff / nd;
+        // 计算差多少小时
+        long hour = diff % nd / nh;
+        // 计算差多少分钟
+        long min = diff % nd % nh / nm;
+        // 计算差多少秒//输出结果
+        // long sec = diff % nd % nh % nm / ns;
+        return day + "天" + hour + "小时" + min + "分钟";
+    }
 }