Merge remote-tracking branch 'origin/master'

4dkankan-common-utils/src/main/java/com/fdkankan/common/util/DateUtil.java

@@ -408,4 +408,11 @@ public final class DateUtil {
         c2.setTime(date2);
         return c2.after(c1);
     }
+
+    public static String dateStr() {
+        SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
+        String format = df.format(new Date());
+        long timeMillis = System.currentTimeMillis();
+        return format + "_" + timeMillis + "_";
+    }
 }