我有一个正在检查数据库条目的Spring服务。为了最小化我的存储库调用,两个find方法都是“@Cacheable”。但是,当我尝试初始化我服务的bean,而我的配置类有一个CacheManager的bean定义我获得以下NoSuchBeanDefinitionException:Config.class中的CacheManager bean定义导致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
如果我参加了CacheManager的bean定义,我可以初始化我的服务豆,它运行没有任何问题和缓存!
这里是我的代码: 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() {
...
}
}
服务
....
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;
}
...
库
...
@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);
}
当我调试到DefaultListableBeanFactory我可以在我的beanDefinitionMap找到mediaCodeDirectoryService并且也在beanDefinitionNames 中出现mediaCodeDirectoryService。但是DefaultListableBeanFactory.getBean(...)无法解析名称,并且在行364中名为Bean的为空。
当我尝试通过字符串来获取上下文喜欢:
INSTANCE = (MediaCodeDirectoryService) ctx.getBean("mediaCodeDirecotryService")
我避免NoSuchBeanDefinitionException但我碰上另一个。
这里的任何人都有一个想法,可能是什么原因呢?我在配置中错过了什么吗?谢谢!
您应该编程来接口非具体类......因此,而不是'MediaCodeDirectoryService'在代码中使用'MediaCodeDirectoryServiceApi'。 –
在另一个节点上,你的代码是危险的,你应该永远不要调用'new * ApplicationContext',因为你基本上是一遍又一遍地重新创建你的应用程序。如果你在多个地方有这个代码,你最终会得到内存问题,事务问题,奇怪的并发问题(当然,如果你希望那些可以这样做,但我强烈建议你不要那么做!)。 –