删除冗余代码

@@ -10,8 +10,7 @@ import org.apache.commons.lang3.StringUtils;
 
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
-import java.time.LocalDate;
-import java.time.LocalDateTime;
+import java.time.*;
 import java.time.format.DateTimeFormatter;
 import java.util.Calendar;
 import java.util.Date;
@@ -175,31 +174,6 @@ public final class DateUtil {
         }
     }
 
-    public static Integer getTimeSeconds(String timeStr) {
-        String afterTime = "";
-        timeStr = timeStr.trim();
-        String[] hengStrs = timeStr.split("-");
-        String[] maoStrs = timeStr.split(":");
-        if(hengStrs.length == 2) {
-            afterTime = timeStr + "-01 00:00:00";
-        } else if(hengStrs.length == 3 && maoStrs.length == 1) {
-            afterTime = timeStr + " 00:00:00";
-        } else if(hengStrs.length == 3 && maoStrs.length == 3) {
-            afterTime = timeStr;
-        }
-
-        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
-        Date date = null;
-
-        try {
-            date = sdf.parse(afterTime);
-            long e = date.getTime();
-            return Integer.valueOf((int)(e / 1000L));
-        } catch (ParseException var8) {
-            return null;
-        }
-    }
-
     /**
      * 获取当前时间，格式yyyy-MM-dd HH:mm:ss
      * @return
@@ -217,15 +191,17 @@ public final class DateUtil {
     }
 
     public static int getHour(Date date) {
-        Calendar calendar = Calendar.getInstance();
-        calendar.setTime(date);
-        return calendar.get(11);
+        Instant instant = date.toInstant();
+        ZoneId zoneId = ZoneId.systemDefault();
+        LocalTime localTime = instant.atZone(zoneId).toLocalTime();
+        return localTime.getHour();
     }
 
-    public static int getMinute(Date date) {
-        Calendar calendar = Calendar.getInstance();
-        calendar.setTime(date);
-        return calendar.get(12);
+    public static int getMinute1(Date date) {
+        Instant instant = date.toInstant();
+        ZoneId zoneId = ZoneId.systemDefault();
+        LocalTime localTime = instant.atZone(zoneId).toLocalTime();
+        return localTime.getMinute();
     }
 
     public static int getAddOrMinusDay(Date date, int num) {
@@ -237,63 +213,10 @@ public final class DateUtil {
     }
 
     public static Date getAddOrMinusDay2(Date date, int num) {
-        GregorianCalendar gc = (GregorianCalendar)Calendar.getInstance();
-        gc.setTime(date);
-        gc.add(5, num);
-        return gc.getTime();
+        Instant instant = date.toInstant();
+        ZoneId zoneId = ZoneId.systemDefault();
+        LocalDateTime localDateTime = instant.atZone(zoneId).toLocalDateTime().plusDays(num);
+        ZonedDateTime zdt = localDateTime.atZone(zoneId);
+        return Date.from(zdt.toInstant());
     }
-
-    public static int getMonthStart() {
-        Calendar cal = Calendar.getInstance();
-        int month = cal.get(2) + 1;
-        int year = cal.get(1);
-        return getTimeSeconds(year + "-" + month).intValue();
-    }
-
-    public static int getMonthEnd() {
-        Calendar cal = Calendar.getInstance();
-        cal.set(5, cal.getMaximum(5));
-        int month = cal.get(2) + 1;
-        int year = cal.get(1);
-        int day = cal.get(5);
-        if(month + 1 == 13) {
-            month = 1;
-            ++year;
-        }
-
-        Integer time = Integer.valueOf(getTimeSeconds(year + "-" + month + "-" + day).intValue() + 86400);
-        return time.intValue();
-    }
-
-    public static boolean isValidDate(String s, String formats) {
-        try {
-            SimpleDateFormat e = new SimpleDateFormat(formats);
-            e.parse(s);
-            return true;
-        } catch (Exception var3) {
-            return false;
-        }
-    }
-
-    public static String getCronFromDateTime(String datetimeStr, String format) {
-        if(StringUtils.isBlank(datetimeStr)) {
-            return null;
-        } else {
-            LocalDateTime localDateTime = LocalDateTime.parse(datetimeStr, DateTimeFormatter.ofPattern(format));
-            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("ss mm HH dd MM ? yyyy");
-            return localDateTime.format(formatter);
-        }
-    }
-
-    public static int getWeekInterval(long dateInt) {
-        Calendar calendar = Calendar.getInstance();
-        int curWeekInt = calendar.get(3);
-        int curYearInt = calendar.get(1);
-        Calendar calendar1 = Calendar.getInstance();
-        calendar1.setTime(new Date(dateInt * 1000L));
-        int weekInt = calendar1.get(3);
-        int yearInt = calendar1.get(1);
-        return curYearInt == yearInt?curWeekInt - weekInt:52 * (curYearInt - yearInt) + curWeekInt - weekInt;
-    }
-
 }