我有使用spring boot,spring security和spring data的web applicatoin。它是無狀態的。SpringCacheBasedUserCache爲null
我想避免總是調用數據庫用戶訪問。所以我想使用SpringCacheBasedUserCache。
@Configuration
@EnableCaching
public class CacheConfig {
@Bean
CacheManager cacheManager() {
SimpleCacheManager cacheManager = new SimpleCacheManager();
cacheManager.setCaches(Arrays.asList(new ConcurrentMapCache("city"), new ConcurrentMapCache("userCache")));
return cacheManager;
}
@Bean
public UserCache userCache() throws Exception {
Cache cache = (Cache) cacheManager().getCache("userCache");
return new SpringCacheBasedUserCache(cache);
}
}
@EnableCaching
@Configuration
@EnableWebSecurity
public class ApplicationSecurity extends WebSecurityConfigurerAdapter {
@Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
@Override
public UserDetailsService userDetailsServiceBean() throws Exception {
return new UserServiceImpl(commerceReposiotry, repository, defaultConfigRepository);
}
...
}
我有誰實現的UserDetails類和另一誰實現的UserDetailsService
@Service
public class UserServiceImpl implements UserDetailsService, UserService {
private final CommerceRepository commerceReposiotry;
private final UserAppRepository repository;
private final DefaultConfigRepository defaultConfigRepository;
@Autowired
private UserCache userCache;
@Autowired
private PasswordEncoder passwordEncoder;
@Autowired
public UserServiceImpl(final CommerceRepository commerceReposiotry, final UserAppRepository repository, final DefaultConfigRepository defaultConfigRepository) {
this.commerceReposiotry = commerceReposiotry;
this.repository = repository;
this.defaultConfigRepository = defaultConfigRepository;
}
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
UserDetails user = userCache.getUserFromCache(username);
UserApp userapp = null;
if (user == null) {
userapp = repository.findByUsername(username);
}
if (userapp == null) {
throw new UsernameNotFoundException("Username " + username + " not found");
}
userCache.putUserInCache(user);
return new CustomUserDetails(userapp);
}
...
}
在loadUserByUsername方法,userCache爲null
你的'UserServiceImpl'不是一個彈簧託管bean,所以什麼都不會被注入。在那之前你的代碼是有缺陷的。放入緩存的'user'將始終爲'null'。 –
而不是自己緩存,只需將自己的'UserDetailsService'包裝在一個'CachingUserDetailsService'中,它爲您完成繁重的工作。 –