在点播视频，直播，以及下载视频时判断设备是否在线，如果不在线直接返回400

src/main/java/com/genersoft/iot/vmp/vmanager/gb28181/play/PlayController.java

@@ -85,8 +85,19 @@ public class PlayController {
 	public DeferredResult<ResponseEntity<String>> play(@PathVariable String deviceId,
 													   @PathVariable String channelId) {
 
-		// 获取可用的zlm
+		DeferredResult<ResponseEntity<String>> result = new DeferredResult<ResponseEntity<String>>(30000L);
+//判断设备是否在线以及是否存在
 		Device device = storager.queryVideoDevice(deviceId);
+		if (device == null) {
+			result.setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+			return result;
+		}
+		if(device.getOnline()==0)
+		{
+			result.setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+			return result;
+		}
+		// 获取可用的zlm
 		MediaServerItem newMediaServerItem = playService.getNewMediaServerItem(device);
 		PlayResult playResult = playService.play(newMediaServerItem, deviceId, channelId, null, null);
 

src/main/java/com/genersoft/iot/vmp/vmanager/gb28181/playback/DownloadController.java

@@ -93,6 +93,16 @@ public class DownloadController {
 		}
 		resultHolder.put(key, uuid, result);
 		Device device = storager.queryVideoDevice(deviceId);
+		if (device == null) {
+			result.setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+			return result;
+		}
+		//判断设备是否在线，不在线直接返回
+		if(device.getOnline()==0)
+		{
+			result.setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+			return result;
+		}
 		StreamInfo streamInfo = redisCatchStorage.queryPlaybackByDevice(deviceId, channelId);
 		if (streamInfo != null) {
 			// 停止之前的下载

src/main/java/com/genersoft/iot/vmp/vmanager/gb28181/playback/PlaybackController.java

@@ -85,6 +85,12 @@ public class PlaybackController {
 			result.setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
 			return result;
 		}
+		//判断设备是否在线，不在线直接返回
+		if(device.getOnline()==0)
+		{
+			result.setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+			return result;
+		}
 		MediaServerItem newMediaServerItem = playService.getNewMediaServerItem(device);
 		SSRCInfo ssrcInfo = mediaServerService.openRTPServer(newMediaServerItem, null, true);