添加方法：计算某天是这一年的第几天

zlz
1 parent 3fa2c642
Showing 1 changed file with 19 additions and 0 deletions
src/main/java/com/bsth/util/DateUtils.java
@@ -133,4 +133,23 @@ public class DateUtils {
 	public static int calcHHmmDiff(String fcsj, String zdsj) throws ParseException {
 		return (int) (sdfHHmm.parse(zdsj).getTime() - sdfHHmm.parse(fcsj).getTime());
 	}
+
+	/**
+	 * 计算某天是这一年的第几天
+	 * @param str
+	 * @return
+	 */
+	public static int calcDaynumberInYear(String str){
+		int num = 0;
+		SimpleDateFormat sdf= new SimpleDateFormat("yyyyMMdd");
+		try {
+			Date date =sdf.parse(str);
+			Calendar calendar = Calendar.getInstance();
+			calendar.setTime(date);
+			num = calendar.get(Calendar.DAY_OF_YEAR);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		return num;
+	}
 }