Referring applicationContext.xml bean in Spring @Configuration

Question

I have something like this:

 @Configuration public class SpringConfigUtil { private static final Logger logger = Logger.getLogger(SpringConfigUtil.class); @Value("#{ systemProperties['activemq.username'] }") private String userName; @Value("#{ systemProperties['activemq.password'] }") private String password; @Value("#{ systemProperties['activemq.URL'] }") private String brokerURL; @Value("#{ systemProperties['activemq.queueName'] }") private String queueName; @Bean public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() { return new PropertySourcesPlaceholderConfigurer(); } @Bean(name="producer") public JmsTemplate jmsTemplate() { JmsTemplate jmsTemplate = new JmsTemplate(); jmsTemplate.setDefaultDestination(new ActiveMQQueue(queueName)); jmsTemplate.setConnectionFactory(connectionFactory()); return jmsTemplate; } @Bean public ActiveMQConnectionFactory connectionFactory() { ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(); activeMQConnectionFactory.setBrokerURL(brokerURL); activeMQConnectionFactory.setUserName(userName); activeMQConnectionFactory.setPassword(password); return activeMQConnectionFactory; } }

It works fine. Let's say I also have an applicationContext.xml file which has loaded some beans.

How do I refer to those beans here in @Configuration? I don't want to create beans programmatically again as they are already created by loading applicationContext.xml.

Let's have I have 50+ properties. Is there a better way to refer to them than defining something like the following for every property?

 @Value("#{ systemProperties['activemq.URL'] }") private String brokerURL;

Thanks for your time!

xerx593 · Accepted Answer · 2015-04-23 01:53:23Z

How do I refer to those beans here in @Configuration?

According to http://docs.spring.io/spring-javaconfig/docs/1.0.0.M4/reference/html/ch06.html, please try:

... @Configuration @AnnotationDrivenConfig // enable the @Autowired annotation (??) @ImportXml("classpath:<*path*/to/your/*>applicationContext.xml") public class SpringConfigUtil { ...

Let's have I have 50+ properties. Is there a better way to refer to them than defining something like the following for every property?

None, that I can imagine :-( ... how could you "better access" 50+ properties, than "by their name" - "by index", array-like!? Though some properties can be coupled, at the end of the day" each has (should have) its special meaning and purpose - and for that touched/wired/configured individually. (the best practice tip is just to do it as rare as possible)

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