我正在關注this advice以將EntityManager
注入到我的Jersey + HK2項目中。出於某種原因,我突然啓動服務時,看到這個異常:在線程澤西島+ HK2:EntityManager注入失敗
異常「主」 java.lang.IllegalArgumentException異常:FactoryDescriptors的創作必須廠作爲第一個參數 在org.glassfish合同.hk2.utilities.FactoryDescriptorsImpl。(FactoryDescriptorsImpl.java:78) at org.glassfish.hk2.utilities.binding.AbstractBindingBuilder $ FactoryTypeBasedBindingBuilder.complete(AbstractBindingBuilder.java:453) at org.glassfish.hk2.utilities.binding。 AbstractBinder.resetBuilder(AbstractBinder.java:180) at org.glassfish.hk2.utilities.binding.AbstractBinder.complete(AbstractBinder.java:190) at org.glassfish.hk2.utilities.b inding.AbstractBinder.bind(AbstractBinder.java:174) 在org.glassfish.hk2.utilities.ServiceLocatorUtilities.bind(ServiceLocatorUtilities.java:187) ....
這裏是我的代碼:
EMFFactory
public class EMFFactory implements Factory<EntityManagerFactory> {
private final Logger log = LoggerFactory.getLogger(EMFFactory.class);
protected EntityManagerFactory emf;
@Inject
Config config;
@PostConstruct
public void setup() {
Properties p = new Properties();
p.put("javax.persistence.jdbc.url", config.getJdbcUrl());
p.put("javax.persistence.jdbc.user", config.getJdbcUser());
p.put("javax.persistence.jdbc.password", config.getJdbcPassword());
emf = Persistence.createEntityManagerFactory("skp-server-PU", p);
log.debug("JDBC URL: "+ config.getJdbcUrl());
}
@Override
public EntityManagerFactory provide() {
return emf;
}
@Override
public void dispose(EntityManagerFactory instance) {}
}
EMFactory
public class EMFactory implements Factory<EntityManager> {
private final Logger log = LoggerFactory.getLogger(EMFFactory.class);
private EntityManager em;
@Inject
EntityManagerFactory emf;
@PostConstruct
public void setup() {
em = emf.createEntityManager();
log.debug("New EntityManager created");
}
@Override
public EntityManager provide() {
return em;
}
@Override
public void dispose(EntityManager instance) {
log.debug("Disposing of EntityManager");
}
}
的ApplicationConfig
結合工廠:
ServiceLocatorUtilities.bind(applicationLocator, new AbstractBinder() {
@Override
protected void configure() {
bindFactory(EMFFactory.class)
.to(EntityManagerFactory.class)
.in(Singleton.class);
bindFactory(EMFactory.class)
.to(EntityManager.class);
}
});
有人能解釋的異常?