fix 新增时间公共类

src/main/java/com/ywt/biz/common/util/DateUtil.java

@@ -7,6 +7,13 @@ import java.util.Date;
 
 public class DateUtil {
     public static final String DATE_FORMAT_YMD = "yyyy-MM-dd";
+
+    private static final String[] WEEK_DAYS = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
+
+    private static final String[] WEEK_DAYS_SHORT = {"日", "一", "二", "三", "四", "五", "六"};
+
+    private static final String[] WEEK_DAYS_MIDDLE = {"周日", "周一", "周二", "周三", "周四", "周五", "周六"};
+
     /**
      * 将时间戳转换成日期字符串格式
      * @param timestamp 时间戳
@@ -71,4 +78,48 @@ public class DateUtil {
     public static Date stringToDate(String strDate) {
         return stringToDate(strDate, "yyyy-MM-dd HH:mm:ss");
     }
+
+
+    public static String convertToString(Date date){
+        return convertToString(date, null);
+    }
+
+    /**
+     * 当前日期是星期几
+     * @param calendar
+     * @return
+     */
+    public static String getDayOfWeek(Calendar calendar) {
+        int index = calendar.get(Calendar.DAY_OF_WEEK) - 1;
+        if (index < 0) {
+            index = 0;
+        }
+        return WEEK_DAYS[index];
+    }
+
+    /**
+     * 当前日期是星期（缩略）
+     * @param calendar
+     * @return
+     */
+    public static String getDayOfWeekShort(Calendar calendar) {
+        int index = calendar.get(Calendar.DAY_OF_WEEK) - 1;
+        if (index < 0) {
+            index = 0;
+        }
+        return WEEK_DAYS_SHORT[index];
+    }
+
+    /**
+     * 当前日期是星期（缩略）
+     * @param calendar
+     * @return
+     */
+    public static String getDayOfWeekMiddle(Calendar calendar) {
+        int index = calendar.get(Calendar.DAY_OF_WEEK) - 1;
+        if (index < 0) {
+            index = 0;
+        }
+        return WEEK_DAYS_MIDDLE[index];
+    }
 }