1 files changed, 59 insertions, 0 deletions
diff --git a/src/main/java/com/mesasoft/cn/util/TimeUtils.java b/src/main/java/com/mesasoft/cn/util/TimeUtils.java
new file mode 100644
index 0000000..5e128dd
--- /dev/null
+++ b/src/main/java/com/mesasoft/cn/util/TimeUtils.java
@@ -0,0 +1,59 @@
+package com.mesasoft.cn.util;
+
+import java.util.Calendar;
+import java.util.Date;
+
+/**
+ * @author yjy
+ * @version 1.0
+ * @date 2021/2/25 11:26 上午
+ */
+public class TimeUtils {
+    public static final Long HOUR_TO_MILLISECONDS = 3600000L;
+    public static final Long DAY_TO_MILLSEDONDS = 86400000L;
+    public static final Integer SECOND_TO_MILLSEDONDS = 1000;
+
+
+    /**
+     * 获得当前时间小时的起始（0分钟）时间
+     */
+    public static Date getStartOfHour() {
+        return getStartOfHour(0);
+    }
+    public static Date getStartOfHour(Integer offset) {
+        Calendar ca = Calendar.getInstance();
+        ca.add(Calendar.HOUR, offset);
+        ca.set(Calendar.MINUTE, 0);
+        ca.set(Calendar.SECOND, 0);
+        ca.set(Calendar.MILLISECOND, 0);
+        return ca.getTime();
+    }
+
+    /**
+     * 获得当前日期的起始（0时）时间
+     */
+    public static Date getStartOfDay() {
+        return getStartOfDay(0);
+    }
+    public static Date getStartOfDay(Integer bias) {
+        Calendar ca = Calendar.getInstance();
+        ca.add(Calendar.DATE, bias);
+        ca.set(Calendar.HOUR, -12);
+        ca.set(Calendar.MINUTE, 0);
+        ca.set(Calendar.SECOND, 0);
+        ca.set(Calendar.MILLISECOND, 0);
+        return ca.getTime();
+    }
+
+    public static Date getStartOfMonth() {
+        Calendar ca = Calendar.getInstance();
+        ca.set(Calendar.DATE, 1);
+        ca.set(Calendar.HOUR, -12);
+        ca.set(Calendar.MINUTE, 0);
+        ca.set(Calendar.SECOND, 0);
+        ca.set(Calendar.MILLISECOND, 0);
+        return ca.getTime();
+    }
+
+}
+