fix response `content-type` is not set if access without access token

Kairlec

2023-05-15 ca103731c721aae3f5f622e58c679ed5c09fd9e9

 src/main/java/com/genersoft/iot/vmp/service/IStreamPushService.java

@@ -11,6 +11,9 @@
import java.util.List;
import java.util.Map;

/**
 * @author lin
 */
public interface IStreamPushService {

    List<StreamPushItem> handleJSON(String json, MediaServerItem mediaServerItem);