i have a requirement, where in i need to validate my @RequestParam such that it is matched with my pattern
Example :
@RequestMapping(value = "/someTest") public Object sendWishes(@RequestParam("birthDate") String birthDate) { // i need birthDate to be a valid date format in YYYYMMDD format // if its not valid it should not hit this method } It should be very easy:
@RequestMapping(value = "/someTest?birthDate={birthDate}") public Object sendWishes(@Valid @Pattern(regexp = "you-pattern-here") @RequestParam("birthDate") String birthDate) { // i need birthDate to be a valid date format in YYYYMMDD format // if its not valid it should not hit this method } 
use @DateTimeFormat
@RequestMapping(value = "/someTest") public Object sendWishes(@RequestParam("birthDate") @DateTimeFormat(pattern="YYYYMMDD") LocalDate birthDate){ //Your code goes here } InitBinder will serve purpose. You Should have following init binding code in your controller:
@InitBinder public void initBinder(WebDataBinder binder) { SimpleDateFormat dateFormat = new SimpleDateFormat("YYYYMMDD"); binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true)); } after that you can get birthDate in your specified YYYYMMDD as date object:
@RequestMapping(value = "/someTest") public Object sendWishes(@RequestParam("birthDate") Date birthDate) 