CustomUserDetailsService.java

package com.nonononoki.alovoa.component;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import com.nonononoki.alovoa.entity.User;
import com.nonononoki.alovoa.repo.UserRepository;

@Service
public class CustomUserDetailsService implements UserDetailsService {

	@Autowired
	private UserRepository userRepo;

	@Override
	public UserDetails loadUserByUsername(String username) {
		User user = userRepo.findByEmail(username);
		if (user == null) {
			throw new UsernameNotFoundException(username);
		}
		return user;
	}
}