What is the correct way of return a List in Spring
0
I have written a method which annotated with a Spring.it will return a List. following code snip will represent that method.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
return new ResponseEntity<>(new ReservationResponse(), HttpStatus.OK);
}
What i want to know is if i write it as this will it be a wrong?
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ResponseEntity<ReservationResponse> reservationResponse = new ResponseEntity<ReservationResponse>();
return (reservationResponse, HttpStatus.OK);
}
java spring list data-structures
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
add a comment |
0
I have written a method which annotated with a Spring.it will return a List. following code snip will represent that method.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
return new ResponseEntity<>(new ReservationResponse(), HttpStatus.OK);
}
What i want to know is if i write it as this will it be a wrong?
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ResponseEntity<ReservationResponse> reservationResponse = new ResponseEntity<ReservationResponse>();
return (reservationResponse, HttpStatus.OK);
}
java spring list data-structures
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
I don't see any list. The second one is definitely wrong because that would become aResponseEntityholding no response (i.e. it is empty). The first one is suspicious too, since you have created a new response object which probably has nothing.
– Jai
Nov 23 '18 at 7:05
Yes. i dont created any list here. i want to know whether returning ways are ok or not. adding list should be their for sure.
– L.Anush
Nov 23 '18 at 7:09
add a comment |
0
0
0
I have written a method which annotated with a Spring.it will return a List. following code snip will represent that method.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
return new ResponseEntity<>(new ReservationResponse(), HttpStatus.OK);
}
What i want to know is if i write it as this will it be a wrong?
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ResponseEntity<ReservationResponse> reservationResponse = new ResponseEntity<ReservationResponse>();
return (reservationResponse, HttpStatus.OK);
}
java spring list data-structures
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
I have written a method which annotated with a Spring.it will return a List. following code snip will represent that method.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
return new ResponseEntity<>(new ReservationResponse(), HttpStatus.OK);
}
What i want to know is if i write it as this will it be a wrong?
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ReservationResponse> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ResponseEntity<ReservationResponse> reservationResponse = new ResponseEntity<ReservationResponse>();
return (reservationResponse, HttpStatus.OK);
}
java spring list data-structures
java spring list data-structures
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
asked Nov 23 '18 at 6:49
L.AnushL.Anush
427
427
I don't see any list. The second one is definitely wrong because that would become aResponseEntityholding no response (i.e. it is empty). The first one is suspicious too, since you have created a new response object which probably has nothing.
– Jai
Nov 23 '18 at 7:05
Yes. i dont created any list here. i want to know whether returning ways are ok or not. adding list should be their for sure.
– L.Anush
Nov 23 '18 at 7:09
add a comment |
I don't see any list. The second one is definitely wrong because that would become aResponseEntityholding no response (i.e. it is empty). The first one is suspicious too, since you have created a new response object which probably has nothing.
– Jai
Nov 23 '18 at 7:05
Yes. i dont created any list here. i want to know whether returning ways are ok or not. adding list should be their for sure.
– L.Anush
Nov 23 '18 at 7:09
I don't see any list. The second one is definitely wrong because that would become a
ResponseEntity holding no response (i.e. it is empty). The first one is suspicious too, since you have created a new response object which probably has nothing.– Jai
Nov 23 '18 at 7:05
I don't see any list. The second one is definitely wrong because that would become a
ResponseEntity holding no response (i.e. it is empty). The first one is suspicious too, since you have created a new response object which probably has nothing.– Jai
Nov 23 '18 at 7:05
Yes. i dont created any list here. i want to know whether returning ways are ok or not. adding list should be their for sure.
– L.Anush
Nov 23 '18 at 7:09
Yes. i dont created any list here. i want to know whether returning ways are ok or not. adding list should be their for sure.
– L.Anush
Nov 23 '18 at 7:09
add a comment |
1 Answer
1
active
oldest
votes
1
I think your ReservationResponse contains a list like this:
class ReservationResponse{
List<Rooms> availableRooms;
}
If like this then you can just return ReservationResponse no need to add anything.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public ReservationResponse getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ReservationResponse> reservationResponse = new ReservationResponse();
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
reservationResponse.setAvailableRooms(rooms);
return reservationResponse;
}
or you can simply return rooms like this
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public List<Rooms> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
return rooms;
}
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
I think your ReservationResponse contains a list like this:
class ReservationResponse{
List<Rooms> availableRooms;
}
If like this then you can just return ReservationResponse no need to add anything.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public ReservationResponse getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ReservationResponse> reservationResponse = new ReservationResponse();
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
reservationResponse.setAvailableRooms(rooms);
return reservationResponse;
}
or you can simply return rooms like this
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public List<Rooms> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
return rooms;
}
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
add a comment |
1
I think your ReservationResponse contains a list like this:
class ReservationResponse{
List<Rooms> availableRooms;
}
If like this then you can just return ReservationResponse no need to add anything.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public ReservationResponse getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ReservationResponse> reservationResponse = new ReservationResponse();
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
reservationResponse.setAvailableRooms(rooms);
return reservationResponse;
}
or you can simply return rooms like this
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public List<Rooms> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
return rooms;
}
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
add a comment |
1
1
1
I think your ReservationResponse contains a list like this:
class ReservationResponse{
List<Rooms> availableRooms;
}
If like this then you can just return ReservationResponse no need to add anything.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public ReservationResponse getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ReservationResponse> reservationResponse = new ReservationResponse();
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
reservationResponse.setAvailableRooms(rooms);
return reservationResponse;
}
or you can simply return rooms like this
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public List<Rooms> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
return rooms;
}
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
I think your ReservationResponse contains a list like this:
class ReservationResponse{
List<Rooms> availableRooms;
}
If like this then you can just return ReservationResponse no need to add anything.
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public ReservationResponse getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
ReservationResponse> reservationResponse = new ReservationResponse();
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
reservationResponse.setAvailableRooms(rooms);
return reservationResponse;
}
or you can simply return rooms like this
@RequestMapping(path = "", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public List<Rooms> getAvailableRooms(
@RequestParam(name = "checkin")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkin,
@RequestParam(name = "checkout")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
LocalDate checkout) {
List<Rooms> rooms = yourService.getAvailableRooms(checkIn,checkOut);
return rooms;
}
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
answered Nov 23 '18 at 7:34
flopcoderflopcoder
735512
735512
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
add a comment |
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
Actually ReservationResponse is a entity which contain private set of fields and getters and setters.
– L.Anush
Nov 23 '18 at 8:26
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
So you can use first one by adjusting with your service data.
– flopcoder
Nov 23 '18 at 10:43
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Any logical or syntax errors in second one.
– L.Anush
Nov 26 '18 at 3:11
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
Yes here yourService not defined
– flopcoder
Nov 26 '18 at 3:36
add a comment |
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I don't see any list. The second one is definitely wrong because that would become a
ResponseEntityholding no response (i.e. it is empty). The first one is suspicious too, since you have created a new response object which probably has nothing.– Jai
Nov 23 '18 at 7:05
Yes. i dont created any list here. i want to know whether returning ways are ok or not. adding list should be their for sure.
– L.Anush
Nov 23 '18 at 7:09