How do I catch BeanCreationException in Apache Camel route initialization to allow my Spring application to start anyway?

Question

I am using Apache Camel and I defined a route receiving inputs from 2 queues located on 2 distinct servers. I want ideally to consume from both server but I also want to be able to run the application when one of the 2 destinations is down.

Here's my route:

    try {
        from("mccdsJmsRequest1:queue:{{mccds.queues.in}}").to("direct:apolloMccdsRoute");
    } catch (Exception e){
        // debug line
        System.out.println("Ms1 not reachable");
        e.printStackTrace();
    }
    try {
        from("mccdsJmsRequest2:queue:{{mccds.queues.in}}").to("direct:apolloMccdsRoute");
    } catch (Exception e){
        // debug line
        System.out.println("Ms2 not reachable");
        e.printStackTrace();
    }

    from("direct:apolloMccdsRoute").routeId("apolloMCCDSRoute")
   // Main route starts here...

I declare my beans here:

@Bean
public JndiObjectFactoryBean mccdsJmsConnectionFactory1() {
    JndiObjectFactoryBean cf = new JndiObjectFactoryBean();
    cf.setJndiEnvironment(prodMccdsJndiProperties.getJndi1());
    cf.setJndiName(jndiName1);
    return cf;
}

@Bean
public JndiObjectFactoryBean mccdsJmsConnectionFactory2(){
    JndiObjectFactoryBean cf = new JndiObjectFactoryBean();
    cf.setJndiEnvironment(prodMccdsJndiProperties.getJndi2());
    cf.setJndiName(jndiName2);  
    return cf;
}

@Inject
private CamelContext camelContext;

@Bean
public JmsComponent mccdsJmsRequest1() {
    JmsComponent ac = new JmsComponent(camelContext);
    ac.setConnectionFactory((ConnectionFactory) mccdsJmsConnectionFactory1().getObject());
    ac.setConcurrentConsumers(5);
    return ac;
}

@Bean
public JmsComponent mccdsJmsRequest2(){
    JmsComponent ac = new JmsComponent(camelContext);
    ac.setConnectionFactory((ConnectionFactory) mccdsJmsConnectionFactory2().getObject());
    ac.setConcurrentConsumers(5);
    return ac;
}

If one of the connection factory is not reachable the application doesn't start. I would like to catch an ignore the exception:

o.s.b.f.s.DefaultListableBeanFactory     : Bean creation exception on non-lazy FactoryBean type check: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mccdsJmsConnectionFactory2' defined in class path resource [ca/bell/it/spa/uim/apollo/maximo/config/mccds/ProdMccdsJmsConfiguration.class]: Invocation of init method failed; nested exception is javax.naming.CommunicationException [Root exception is java.net.ConnectException: t3://someTestServerIP: Destination unreachable; nested exception is: 
java.net.ConnectException: Connection refused (Connection refused); No available router to destination]

Answer 1

Try to set lookupOnStartup to false. (Add cf.setLookupOnStartup(false) to the mccdsJmsConnectionFactory1 and mccdsJmsConnectionFactory2 bean definitions.)

Also check this thread: http://forum.spring.io/forum/spring-projects/batch/95620-jndi-lookup