我有一個正在檢查數據庫條目的Spring服務。爲了最小化我的存儲庫調用,兩個find方法都是「@Cacheable」。但是,當我嘗試初始化我服務的bean,而我的配置類有一個CacheManager的bean定義我獲得以下NoSuchBeanDefinitionException:Config.class中的CacheManager bean定義導致NoSuchBeanDefinitionException
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'foo.mediacode.directory.MediaCodeDirectoryService' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:353)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:340)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1093)
at foo.mediacode.directory.MediaCodeDirectoryService.implementation(MediaCodeDirectoryService.java:63)
at foo.campaigntree.directory.CampaignTreeDirectoryService.<init>(CampaignTreeDirectoryService.java:18)
... 15 more
如果我參加了CacheManager的bean定義,我可以初始化我的服務豆,它運行沒有任何問題和緩存!
這裏是我的代碼: 配置
...
@Configuration
@EnableCaching
@EnableJpaRepositories(...)
@PropertySource({...})
public class MediaCodeDirectoryServiceConfig {
private static Logger configLogger = Logger.getLogger(MediaCodeDirectoryServiceConfig.class.getName());
@Value("${jpa.loggingLevel:FINE}")
private String loggingLevel;
@Value("${mysql.databaseDriver}")
private String dataBaseDriver;
@Value("${mysql.username}")
private String username;
@Value("${mysql.password}")
private String password;
@Value("${mysql.databaseUrl}")
private String databaseUrl;
@Bean
public static PropertySourcesPlaceholderConfigurer propertyConfigInDev() {
...
}
@Bean
public MediaCodeDirectoryService mediaCodeDirectoryService() {
return new MediaCodeDirectoryService();
}
@Bean
public CacheManager mediaCodeCacheManager() {
SimpleCacheManager cacheManager = new SimpleCacheManager();
cacheManager.setCaches(Arrays.asList(new ConcurrentMapCache("mediaCodeMappingRegexCache"),
new ConcurrentMapCache("mediaCodeMappingsCache")));
return cacheManager;
}
@Bean
public JpaTransactionManager transactionManager() {
...
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
...
}
public DataSource getDataSource() {
...
}
public JpaDialect getJpaDialect() {
...
}
public Properties getEclipseLinkProperty() {
...
}
public JpaVendorAdapter getJpaVendorAdapter() {
...
}
}
服務
....
public class MediaCodeDirectoryService implements MediaCodeDirectoryServiceApi {
...
@Autowired
private MediaCodeDirectoryRepository repo;
@SuppressWarnings("resource")
public static MediaCodeDirectoryServiceApi implementation() {
if (INSTANCE == null) {
ApplicationContext ctx = new AnnotationConfigApplicationContext(MediaCodeDirectoryServiceConfig.class);
INSTANCE = ctx.getBean(MediaCodeDirectoryService.class);
}
return INSTANCE;
}
...
庫
...
@Repository
public interface MediaCodeDirectoryRepository extends CrudRepository<MediaCodeDao, Integer> {
@Cacheable("mediaCodeMappingRegexes")
@Query("SELECT m FROM #{#entityName} m WHERE (m.fooId = :fooId) AND (m.isRegex = :isRegex) ORDER BY (m.orderId DESC, m.id ASC)")
List<MediaCodeDao> findByfooIdAndIsRegexOrderByOrderIdDescAndIdAsc(@Param("fooId") int fooId, @Param("isRegex") boolean isRegex);
@Cacheable("mediaCodeMappings")
List<MediaCodeDao> findByMediaCode(String MediaCode, Pageable pageable);
}
當我調試到DefaultListableBeanFactory我可以在我的beanDefinitionMap找到mediaCodeDirectoryService並且也在beanDefinitionNames 中出現mediaCodeDirectoryService。但是DefaultListableBeanFactory.getBean(...)無法解析名稱,並且在行364中名爲Bean的爲空。
當我嘗試通過字符串來獲取上下文喜歡:
INSTANCE = (MediaCodeDirectoryService) ctx.getBean("mediaCodeDirecotryService")
我避免NoSuchBeanDefinitionException但我碰上另一個。
這裏的任何人都有一個想法,可能是什麼原因呢?我在配置中錯過了什麼嗎?謝謝!
您應該編程來接口非具體類......因此,而不是'MediaCodeDirectoryService'在代碼中使用'MediaCodeDirectoryServiceApi'。 –
在另一個節點上,你的代碼是危險的,你應該永遠不要調用'new * ApplicationContext',因爲你基本上是一遍又一遍地重新創建你的應用程序。如果你在多個地方有這個代碼,你最終會得到內存問題,事務問題,奇怪的併發問題(當然,如果你希望那些可以這樣做,但我強烈建議你不要那麼做!)。 –