在redis中添加wvp存活依据，添加推流变化消息

src/main/java/com/genersoft/iot/vmp/service/impl/MediaServerServiceImpl.java

@@ -47,7 +47,7 @@ public class MediaServerServiceImpl implements IMediaServerService, CommandLineR
     private boolean sslEnabled;
 
     @Value("${server.port}")
-    private String serverPort;
+    private Integer serverPort;
 
     @Autowired
     private MediaConfig mediaConfig;