java - How to solve 500 Internal Server Error in Swagger UI,service is not running

Question

Service is compiling but shows error 500 in swagger ui and not giving output help! Below are controller, service,implementation codes ,please help me get through this. Rest all services are working fine

controller

@ApiOperation(value="Returns all bookings")                                             //Operation to view all bookings
    @ApiResponses(value= {
            @ApiResponse(code=201, message="All Bookings found"),
            @ApiResponse(code=404, message="No such booking found")
    })
    @GetMapping(value = "/booking/all", produces = MediaType.APPLICATION_JSON_VALUE)  
    public List<Booking> getAllBooking() throws BookingNotFoundException {
        logger.info("View all booking service started..");
        return bookingService.getAllBookings();
    }
    

Service Implementation

@Override
public List<Booking> getAllBookings() {
    return  BookingUtil.convertBookingEntityListIntoBookingList(bookingRepo.findAll());
}

Service

         public List<Booking> getAllBookings();

util

public  static BookingEntity convertBookingIntoBookingEntity(Booking booking) 
{
    return new BookingEntity(booking.getJourneyDate(),booking.getBookingDate(),booking.getCancelDate(),
            booking.getFare(),booking.getBookingStatus(),booking.getVehicleType(),RouteUtil.convertRouteIntoRouteEntity(booking.getRoute()),
            UserUtil.convertUserIntoUserEntity(booking.getUser()));
}

public  static Booking convertBookingEntityIntoBooking(BookingEntity bookingEntity)
{
    return new Booking(bookingEntity.getBookingId(),bookingEntity.getJourneyDate(),bookingEntity.getBookingDate()
            ,bookingEntity.getCancelDate(),bookingEntity.getFare(),bookingEntity.getBookingStatus(),
            bookingEntity.getVehicleType(),RouteUtil.convertRouteEntityIntoRoute(bookingEntity.getRoute()),
            UserUtil.convertUserEntityIntoUser(bookingEntity.getUser()));
}

public static List<Booking> convertRouteEntityListIntoBookingList(List<BookingEntity> bookingEntityList) {
    List<Booking> booking = new ArrayList<Booking>();
    for(BookingEntity bookingEntity: bookingEntityList) {
        booking.add(convertBookingEntityIntoBooking(bookingEntity));
    }
    return booking;
}



public  static List<Booking> convertBookingEntityListIntoBookingList(List<BookingEntity> bookingEntityList)
{
    List<Booking> bookings = new ArrayList<Booking>();
    for(BookingEntity bookingEntity: bookingEntityList) {
        bookings.add(convertBookingEntityIntoBooking(bookingEntity));
    }
    return bookings;
}

}

Answer 1

等待大神答复