spring boot rest JPA query return null object on Query by email

Question

I came across different behavior of spring data rest in spring boot application when I query from object repository class,having custom query to retrieve User object by matching email id,and email id is unique.I get null value and the object exist. I am calling Rest URI from postman. --UserRepository

@Repository
@Transactional
public interface UserRepository extends  JpaRepository<User, Long> {    

    @Query(value ="select u from User u where u.email = :email")
    User findByEmail(@Param("email") String email);


}

--UserServiceImpl

@Service("userService")
@Transactional
public class UserServiceImpl implements IUserService{

    @Autowired
    private UserRepository userRepository;


    @Override
    public User findByEmail(String email) {
        return userRepository.findByEmail(email);
    }
}

--Controller

@RestController
@RequestMapping("/api")
public class UserControllerRest {

@Autowired(required = true)
UserServiceImpl userService;    
@RequestMapping(value = "/user/email/{email}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
            public ResponseEntity<User> getUserByEmail(@PathVariable("email") String email) {
                System.out.println("Fetching User with id " + email);
                User user = userService.findByEmail(email);
                if (user == null) {
                    System.out.println("User with email " + email + " not found");
                    return new ResponseEntity<User>(HttpStatus.NOT_FOUND);
                }
                return new ResponseEntity<User>(user, HttpStatus.OK);
            }

}

Help required in this regard

Answer 1

after alot of debugging I finally reached upon this observation that the email id was not able to reach controller mapped method and for test@gmail.com ,it was read as test@gmail and period and com value were removed out ,the work around was to change URI mapping and add / at the end of parameter so the updated URI is now
@RequestMapping(value = "/user/email/{email}/", produces = MediaType.APPLICATION_JSON_VALUE)