我在@Service方法中保存一些值时遇到问题。我的代码：

@Service(value = "SettingsService")
public class SettingsService {
...

    public String getGlobalSettingsValue(Settings setting) {
        getTotalEhCacheSize();
        if(!setting.getGlobal()){
            throw new IllegalStateException(setting.name() + " is not global setting");
        }
        GlobalSettings globalSettings = globalSettingsRepository.findBySetting(setting);
        if(globalSettings != null)
            return globalSettings.getValue();
        else
            return getGlobalEnumValue(setting)
    }

@Cacheable(value = "noTimeCache", key = "#setting.name()")
    public String getGlobalEnumValue(Settings setting) {
        return Settings.valueOf(setting.name()).getDefaultValue();
    }

我的存储库类：

@Repository
public interface GlobalSettingsRepository extends CrudRepository<GlobalSettings, Settings> {

    @Cacheable(value = "noTimeCache", key = "#setting.name()", unless="#result == null")
    GlobalSettings findBySetting(Settings setting);

它应该像这样工作：

• 如果数据存在，则从DB获得价值，
• 如果没有，则从枚举中保存价值。

但它没有保存数据库或枚举中的任何数据。

我的缓存配置：

@Configuration
@EnableCaching
public class CacheConfig {
    @Bean
    public EhCacheCacheManager cacheManager(CacheManager cm) {
        return new EhCacheCacheManager(cm);
    }
    @Bean
    public EhCacheManagerFactoryBean ehcache() {
        EhCacheManagerFactoryBean ehCacheManagerFactoryBean = new EhCacheManagerFactoryBean();
        ehCacheManagerFactoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));

        return  ehCacheManagerFactoryBean;
    }
}

我有一些示例来确保缓存在我的项目中以rest方法运行：

    @RequestMapping(value = "/system/status", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<?> systemStatus() {
        Object[] list = userPuzzleRepository.getAverageResponseByDateBetween(startDate, endDate);
...
}

public interface UserPuzzleRepository extends CrudRepository<UserPuzzle, Long> {
    @Cacheable(value = "averageTimeAnswer", key = "#startDate")
    @Query("select AVG(case when up.status='SUCCESS' OR up.status='FAILURE' OR up.status='TO_CHECK' then up.solvedTime else null end) from UserPuzzle up where up.solvedDate BETWEEN ?1 AND ?2")
    Object[] getAverageResponseByDateBetween(Timestamp startDate, Timestamp endDate);

而且运作良好。

我做错了什么？