我目前正在开发一款Vaadin spring应用，根据应用规范，用户的认证授权必须通过jdbcTemplate查询数据库来完成，这个问题怎么解决？我使用的是Sping Boot 1.4.2.RELEASE。

UPDATE：此方法适用于Sping Boot 1.1.x.RELEASE，但在其最新版本上会产生以下错误消息。

Description:
The dependencies of some of the beans in the application context form a cycle:
┌─────┐
|  jdbcAccountRepository defined in file [repositories\JdbcAccountRepository.class]
↑     ↓
|  securityConfiguration.WebSecurityConfig (field services.JdbcUserDetailsServicessecurity.SecurityConfiguration$WebSecurityConfig.userDetailsService)
↑     ↓
|  jdbcUserDetailsServices (field repositories.JdbcAccountRepository services.JdbcUserDetailsServices.repository)
└─────┘

原始代码如下所示：
帐户存储库：

public interface AccountRepository {
    void createAccount(Account user) throws UsernameAlreadyInUseException;
    Account findAccountByUsername(String username);
}

JdbcAccount存储库：

@Repository
public class JdbcAccountRepository implements AccountRepository {

    private final Logger LOGGER = LoggerFactory.getLogger(this.getClass());

    private final JdbcTemplate jdbcTemplate;
    private final PasswordEncoder passwordEncoder;

    @Autowired
    public JdbcAccountRepository(JdbcTemplate jdbcTemplate, PasswordEncoder passwordEncoder) {
        this.jdbcTemplate = jdbcTemplate;
        this.passwordEncoder = passwordEncoder;
    }

    @Transactional
    @Override
    public void createAccount(Account user) throws UsernameAlreadyInUseException {
        try {
            jdbcTemplate.update(
                "insert into Account (firstName, lastName, username, password, role) values (?, ?, ?, ?, ?)",
                user.getFirstName(),
                user.getLastName(),
                user.getUsername(),
                passwordEncoder.encode(
                        user.getPassword()),
                        user.getRole()
            );
        } catch (DuplicateKeyException e) {
            throw new UsernameAlreadyInUseException(user.getUsername());
        }
    }

    @Override
    public Account findAccountByUsername(String username) {
        return jdbcTemplate.queryForObject(
            "select username, password, firstName, lastName, role from Account where username = ?",
            (rs, rowNum) -> new Account(
                    rs.getString("username"),
                    rs.getString("password"),
                    rs.getString("firstName"),
                    rs.getString("lastName"),
                    rs.getString("role")),
            username
        );
    }
}

Jdbc用户详细信息服务：

@Service
public class JdbcUserDetailsServices implements UserDetailsService {
    private final Logger LOGGER = LoggerFactory.getLogger(this.getClass());

    @Autowired
    JdbcAccountRepository repository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        try {
            Account account = repository.findAccountByUsername(username);
            User user = new User(
                account.getUsername(),
                account.getPassword(),
                AuthorityUtils.createAuthorityList(
                        account.getRole()
                )
            );
            return user;
        } catch (DataAccessException e) {
            LOGGER.debug("Account not found", e);
            throw new UsernameNotFoundException("Username not found.");
        }
    }
}

安全配置：

@Configuration
@ComponentScan
public class SecurityConfiguration {

    @Autowired
    ApplicationContext context;

    @Autowired
    VaadinSecurity security;

    @Bean
    public PreAuthorizeSpringViewProviderAccessDelegate preAuthorizeSpringViewProviderAccessDelegate() {
        return new PreAuthorizeSpringViewProviderAccessDelegate(security, context);
    }

    @EnableGlobalMethodSecurity(securedEnabled = true,prePostEnabled = true)
    public static class GlobalMethodSecurity extends GlobalMethodSecurityConfiguration {

        @Bean
        @Override
        protected AccessDecisionManager accessDecisionManager() {
            return super.accessDecisionManager();
        }
    }

    @Configuration
    @EnableWebSecurity
    public static class WebSecurityConfig extends WebSecurityConfigurerAdapter {

        @Autowired
        JdbcUserDetailsServices userDetailsService;

        @Autowired
        DataSource dataSource;

        @Bean
        public PasswordEncoder passwordEncoder() {
            return NoOpPasswordEncoder.getInstance();
        }

        @Bean
        public TextEncryptor textEncryptor() {
            return Encryptors.noOpText();
        }

        /*
         * (non-Javadoc)
         * @see org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter
         * #configure(org.springframework.security.config.annotation.web.builders.WebSecurity)
         */
        @Override
        public void configure(WebSecurity web) throws Exception {
            //Ignoring static resources
            web.ignoring().antMatchers("/VAADIN/**");
        }

        @Override
        protected void configure(AuthenticationManagerBuilder auth)
            throws Exception {
            auth.userDetailsService(userDetailsService);
        }

        @Bean(name="authenticationManager")
        @Override
        public AuthenticationManager authenticationManagerBean() throws Exception {
            return super.authenticationManagerBean();
        }

        /*
         * (non-Javadoc)
         * @see org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter
         * #configure(org.springframework.security.config.annotation.web.builders.HttpSecurity)
         */
        @Override
        protected void configure(HttpSecurity http) throws Exception {

            http
                .exceptionHandling()
                    .authenticationEntryPoint(new LoginUrlAuthenticationEntryPoint("/"))
                    .and()
                .authorizeRequests()
                    .antMatchers("/**").permitAll()
                    .and()
                .csrf().disable();
        }
    }
}

如果将Sping Boot 版本降级到[1.1.5，1.2.0），这个问题就不会发生（由于其他依赖关系，我必须使用最新版本）