所有spring mvc + hibernate + spring安全示例都說我需要創建MyUserService類，其中從springSecurity擴展了UserDetailsService，以將我的數據庫與spring安全性綁定。但是當我這樣做時，我得到：錯誤創建名為“webSecurityConfig”的bean沒有定義這樣的bean UserSerivce，當我嘗試將其自動連接到SecurityConfig時，它尚不存在。當我下載任何在線示例時，給我同樣的錯誤。我在 Git 中的項目 - start_over分支。我的網絡安全配置類：@Configuration@EnableWebSecuritypublic class WebSecurityConfig extends WebSecurityConfigurerAdapter {@Autowiredprivate UserService userService;@Autowiredpublic void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {    auth.userDetailsService(userService).passwordEncoder(passwordEncoder());}@Overrideprotected void configure(HttpSecurity http) throws Exception {    http.authorizeRequests().antMatchers("/login", "/").anonymous()            .antMatchers("/admin", "/admin**").hasRole("ADMIN")            .anyRequest().authenticated()            .and()            .formLogin().loginPage("/login").permitAll()            .and()            .logout().logoutSuccessUrl("/login").permitAll()            .and()            .csrf().disable();}@Beanpublic PasswordEncoder passwordEncoder() {    return new BCryptPasswordEncoder();}}我的用戶服務：public interface UserService extends UserDetailsService {    void save(User user);    List<User> getAllUsers();}我的用戶服務簡單@Servicepublic class UserServiceImp implements UserService{    @Autowired    private UserDao userDao;    @Transactional    public void save(User user) {        userDao.save(user);    }    @Transactional(readOnly = true)    public List<User> getAllUsers() {        return userDao.getAllUsers();    }    @Transactional(readOnly=true)    @Override    public UserDetails loadUserByUsername(final String username)            throws UsernameNotFoundException {        com.rjproject.entities.User user = userDao.findByUserName(username);        List<GrantedAuthority> authorities =                buildUserAuthority(user.getAuthorities());        return buildUserForAuthentication(user, authorities);    }