从图片中可以看出，我的 ComponentScan 设置为整个项目。但不知何故，“配置”包看不到任何其他包，反之亦然。
如果我运行我的项目，我会在启动时收到一个错误，即没有可用的 'com.rjproject.dao.UserDao' 类型的合格 bean，对于所有其他 bean 也是如此，在这个包中自动装配。但是它们在所有其他软件包中都可以很好地自动装配。
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webSecurityConfig': Unsatisfied dependency expressed through field 'myUserDetailsService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.rjproject.service.MyUserDetailsService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
但是这个 bean 存在并且在任何其他包中都可以很好地自动装配。
这里 webSecurityConfig
@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
MyUserDetailsService myUserDetailsService;
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(myUserDetailsService).passwordEncoder(passwordEncoder());
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().antMatchers("/admin/**")
.access("hasRole('ADMIN')").and().formLogin()
.loginPage("/login").failureUrl("/login?error")
.usernameParameter("username")
.passwordParameter("password")
.and().logout().logoutSuccessUrl("/login?logout")
.and().csrf()
.and().exceptionHandling().accessDeniedPage("/403");
}
@Bean
public PasswordEncoder passwordEncoder() {
PasswordEncoder encoder = new BCryptPasswordEncoder();
return encoder;
}
}
这里是 MyUserDetailService
@Service
public class MyUserDetailsService implements UserDetailsService {
@Autowired
private UserDao userDao;
@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);
}
private User buildUserForAuthentication(com.rjproject.entities.User user,
List<GrantedAuthority> authorities) {
return new User(user.getUsername(), user.getPassword(),
user.isEnabled(), true, true, true, authorities);
}
private List<GrantedAuthority> buildUserAuthority(Set<Authorities> userRoles) {
Set<GrantedAuthority> setAuths = new HashSet<GrantedAuthority>();
// Build user's authorities
for (Authorities userRole : userRoles) {
setAuths.add(new SimpleGrantedAuthority(userRole.getAuthority()));
}
List<GrantedAuthority> Result = new ArrayList<GrantedAuthority>(setAuths);
return Result;
}
}
UPD
正如我所知道的，问题是当我想在配置中自动装配它时，spring bean 还没有创建。但是每个在线示例都说它应该有效。