@ExceptionHandler({DataIntegrityViolationException.class})
public void constraintViolation(HttpServletResponse response, DataIntegrityViolationException ex)
throws IOException {
String message;
Throwable cause = ex.getCause();
if (cause instanceof ConstraintViolationException) {
ConstraintViolationException cEx = (ConstraintViolationException) cause;
message =
"Application already contain sent data (Constraint "
+ cEx.getConstraintName()
+ " violates).";
} else {
message = ex.getMessage();
}
response.sendError(CONFLICT.value(), message);
}
