Signup.java

@PostMapping(SIGN_UP_URL)
public void signUp(@Valid @RequestBody ApplicationUser user) {
    user.setPassword(bCryptPasswordEncoder.encode(user.getPassword()));
    try {
        applicationUserRepository.save(user);
    } catch (Throwable e) {
        throw RepositoryExceptionExtractor.extract(e, logger, Thread.currentThread().getStackTrace()[1].getMethodName());
    }
}