過去バージョン

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

import org.springframework.context.annotation.Bean;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

@EnableWebSecurity
public class WebSecurityBasicConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        
        http.antMatcher("/test"); //Basic認証を必要とするURLを記述する この記述がない場合は全リクエストでBasic認証が必要となる
        http.httpBasic();
        http.authorizeRequests() //
            .anyRequest().authenticated();
    }
    
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}
 

import java.util.Collections;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

@Service
public class LoginUserService implements UserDetailsService {
    // 実体は@Beanの付いたpasswordEncoderメソッドから取得される
    @Autowired
    private PasswordEncoder passwordEncoder;
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        if (username == null) {
            throw new UsernameNotFoundException("empty");
        }

        String password;
        switch (username) {
        case "test_user":
            password = passwordEncoder.encode("test_password");
            break;
        default:
            throw new UsernameNotFoundException("not found");
        }

        return new User(username, password, Collections.emptySet());
    }
}