NoUniqueBeanDefinitionException in Spring annotation driven configuration - spring

Question

I am getting the following error when trying to autowire two beans using
No qualifying bean of type [javax.jms.ConnectionFactory] is defined:
expected single matching bean but found 2: aConnectionFactory, bConnectionFactory
Description:
Parameter 1 of method jmsListenerContainerFactory in org.springframework.boot.autoconfigure.jms.JmsAnnotationDrivenConfiguration required a single bean, but 2 were found:
- aConnectionFactory: defined by method 'aConnectionFactory' in package.Application
- bConnectionFactory: defined by method 'bConnectionFactory' in package.Application
Action:
Consider marking one of the beans as #Primary, updating the consumer to accept multiple beans, or using #Qualifier to identify the bean that should be consumed
I have this annotation driven configuration:
#SpringBootApplication
#EnableIntegration
#IntegrationComponentScan
public class Application extends SpringBootServletInitializer implements
WebApplicationInitializer {
#Resource(name = "aConnectionFactory")
private ConnectionFactory aConnectionFactory;
#Resource(name = "bConnectionFactory")
private ConnectionFactory bConnectionFactory;
#Bean
public IntegrationFlow jmsInboundFlow() {
return IntegrationFlows
.from(
Jms.inboundAdapter(aConnectionFactory)
.destination(aQueue),
e -> e.poller( Pollers.fixedRate(100,
TimeUnit.MILLISECONDS).maxMessagesPerPoll(100))
).channel("entrypoint")
.get();
}
#Bean
public IntegrationFlow jmsInboundFlowB() {
return IntegrationFlows
.from(
Jms.inboundAdapter(bConnectionFactory)
.destination(bQueue),
e -> e.poller( Pollers.fixedRate(100,
TimeUnit.MILLISECONDS).maxMessagesPerPoll(100))
).channel("entrypoint")
.get();
}
#Bean(name = "aConnectionFactory")
#Profile({"weblogic"})
public ConnectionFactory aConnectionFactory() {
ConnectionFactory factory = null;
JndiTemplate jndi = new JndiTemplate();
try {
factory = (ConnectionFactory) jndi.lookup("jms/ConnectionFactory");
} catch (NamingException e) {
logger.error("NamingException for jms/ConnectionFactory", e);
}
return factory;
}
#Bean(name = "bConnectionFactory")
#Profile({"weblogic"})
public ConnectionFactory bConnectionFactory() {
ConnectionFactory factory = null;
JndiTemplate jndi = new JndiTemplate();
try {
factory = (ConnectionFactory) jndi.lookup("jms/ConnectionFactory");
} catch (NamingException e) {
logger.error("NamingException for jms/ConnectionFactory", e);
}
return factory;
}
}
Any ideas what's wrong in this code? This seems to be straight forward, but specifying the Qualifier doesn't work, I have also tried to use #Resource. What am I missing there?
Any help appreciated.

Answer 1

Nothing wrong with your code.
That is just JmsAnnotationDrivenConfiguration from Spring Boot which doesn't like your two ConnectionFactory beans, but requires only one.
Why just don't follow with that report recommendations and mark one of them with the #Primary?
Looks like you don't use Spring Boot JMS auto-configuration feature, so that would be just straightforward to disable JmsAnnotationDrivenConfiguration: http://docs.spring.io/spring-boot/docs/1.4.1.RELEASE/reference/htmlsingle/#using-boot-disabling-specific-auto-configuration

Answer 2

The problem consist
javax.jms.ConnectionFactory is singleton, you need one object that type!
Solutions for your problem:
If you need two object that create objects and extend ConnectionFactory
them change scope as needed.
try #Scope("singleton") or #Scope("prototype").
if you receive error, make a objects. then use a scope #Scope("singleton")
"Other Two" disfigure the other class that is already using and setting such an.