bug fix

src/main/java/com/tidecloud/dataacceptance/entity/Device.java

@@ -87,7 +87,7 @@ public class Device implements Serializable{
     public static String buildDeviceStr(Device device){
         Date timestamp = device.getTimestamp();
         timestamp = DateUtil.calculateByHour(timestamp, 8);
-        String date = new SimpleDateFormat("yy-MM-dd HH:mm:ss").format(timestamp);
+        String date = new SimpleDateFormat("yyMMddHHmmss").format(timestamp);
         StringBuilder builder = new StringBuilder();
         builder.append(device.getDeviceId()).append(",");
         builder.append(date).append(",");