修复回放、停止预览bug，增加ZLM hook监听，长时间无人观看，停止摄像头推流。需开启ZLM的hook并配置url

src/main/java/com/genersoft/iot/vmp/gb28181/utils/DateUtil.java

@@ -46,7 +46,7 @@ public class DateUtil {
 		Date date;
 		try {
 			date = format.parse(formatTime);
-			Long timestamp=date.getTime();
+			Long timestamp=date.getTime()/1000;
 			//转换为Date类
 			return timestamp;
 		} catch (ParseException e) {