@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
boolean getAll = (request.getParameter("id") == null);
try {
VehicleEntityManager vehicleEntityManager = new VehicleEntityManager();
if (getAll) {
for (Vehicle vehicle : vehicleEntityManager.getAll())
response.getWriter().write(vehicle.toString() + '\n');
LOGGER.info("Successfully fetched Vehicles list.");
} else {
int id = Integer.parseInt(request.getParameter("id").trim());
Vehicle vehicle = vehicleEntityManager.get(id);
response.getWriter().write(vehicle.toString());
LOGGER.info(String.format("Successfully fetched Vehicle with id: %d.", id));
}
} catch (Exception e) {
LOGGER.error(String.format("Failed to handle request: %s", request));
if (getAll) {
LOGGER.error("Exception thrown while getting Vehicles list: %s", e);
response.sendError(500, "Internal Server Error: Getting Vehicles list failed. \n");
} else {
LOGGER.error(
String.format(
"Exception thrown while getting Vehicle with ID: %s", request.getParameter("id")),
e);
response.sendError(
500,
String.format(
"Internal Server Error: Fetching Vehicle with id: %s failed. \n",
request.getParameter("id")));
}
}
response.setStatus(200);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
boolean delete = (request.getParameter("delete") != null);
boolean update = (request.getParameter("id") != null);
Vehicle vehicle = new Vehicle();
try {
VehicleEntityManager vehicleEntityManager = new VehicleEntityManager();
if (delete) {
int id = Integer.parseInt(request.getParameter("id").trim());
vehicleEntityManager.delete(id);
LOGGER.info(String.format("Successfully deleted vehicle with ID: %d", id));
} else {
vehicle.setBrand(request.getParameter("brand"));
vehicle.setEngine(Integer.parseInt(request.getParameter("engine").trim()));
if (request.getParameter("horsepower") != null
&& request.getParameter("horsepower").length() > 0)
vehicle.setHorsepower(Integer.parseInt(request.getParameter("horsepower").trim()));
if (request.getParameter("mileage") != null && request.getParameter("mileage").length() > 0)
vehicle.setMileage(Integer.parseInt(request.getParameter("mileage").trim()));
vehicle.setType(request.getParameter("type"));
vehicle.setVIN(request.getParameter("VIN"));
vehicle.setProductionDate(new Date(System.currentTimeMillis()));
vehicle.setAvailable(Boolean.parseBoolean(request.getParameter("available")));
if (update) {
vehicle.setId(Integer.parseInt(request.getParameter("id").trim()));
LOGGER.info("Updating vehicle:" + vehicle.toString());
vehicleEntityManager.update(vehicle);
LOGGER.info(String.format("Successfully updated vehicle: %s", vehicle));
} else {
LOGGER.info("Adding vehicle:" + vehicle.toString());
vehicleEntityManager.add(vehicle);
LOGGER.info(String.format("Successfully added vehicle: %s", vehicle));
}
}
} catch (Exception e) {
LOGGER.error(String.format("Failed to handle request: %s", request));
if (delete) {
LOGGER.error(String.format("Exception thrown while deleting Vehicle: %s", vehicle), e);
response.sendError(
500, String.format("Internal Server Error: Deleting Vehicle %s failed. \n", vehicle));
} else if (update) {
LOGGER.error(String.format("Exception thrown while updating Vehicle: %s", vehicle), e);
response.sendError(
500, String.format("Internal Server Error: Updating Vehicle %s failed. \n", vehicle));
} else {
LOGGER.error(String.format("Exception thrown while adding Vehicle: %s", vehicle), e);
response.sendError(
500, String.format("Internal Server Error: Adding Vehicle %s failed. \n", vehicle));
}
vehicle = null;
}
response.setStatus(200);
LOGGER.info(response.toString());
// Redirect to vehicles.jsp
request.getRequestDispatcher("/vehicles.jsp").forward(request, response);
}