二、三种认证方式

spring.security.user.name=admin
spring.security.user.password=admin

@Configuration
public class MySecurityConfig extends WebSecurityConfigurerAdapter {
    
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //密码加密
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        String password = passwordEncoder.encode("admin");
        //配置用户名和密码认证
        auth.inMemoryAuthentication().withUser("admin").password(password).roles("admin");
    }
    
    @Bean
    public PasswordEncoder getPasswordEncoder(){
        //获取PasswordEncoder
        return new BCryptPasswordEncoder();
    }
    
}

•  配置类：

@Configuration
public class MySecurityConfig extends WebSecurityConfigurerAdapter {
    
    @Autowired
    private UserDetailsService userDetailsService;
        
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(getPasswordEncoder());
    }
    
    @Bean
    public PasswordEncoder getPasswordEncoder(){
        // 获取PasswordEncoder
        return new BCryptPasswordEncoder();
    }
    
}

•  实现类：

@Service("userDetailsService")
public class MyUserDetailsService implements UserDetailsService {
    
    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
        //用户权限
        List auths =
                AuthorityUtils.commaSeparatedStringToAuthorityList("role");
        return new User("admin",
                new BCryptPasswordEncoder().encode("admin"), auths);
    }
}