How do I manually autowire a bean with Spring?

java spring autowired
Aaron Digulla picture Aaron Digulla · Aug 15, 2012 · Viewed 27.4k times · Source

I have a bean B which I have to create myself (using new B()) and which has @Autowire and @PostConstruct annotations.

How do I make Spring process these annotations from my bean A?

Related question:

Answer

AlexR picture AlexR · Aug 15, 2012

Aaron, I believe that your code is correct but I used the following:

B bean = new B();
AutowireCapableBeanFactory factory = applicationContext.getAutowireCapableBeanFactory();
factory.autowireBean( bean );
factory.initializeBean( bean, "bean" );

The first method will process @Autowire fields and methods (but not classic properties). The second method will invoke post processing (@PostConstruct and any defined BeanPostProcessors).

Application context can be obtained in a bean if it implements ApplicationContextAware interface.

Related questions

@Autowired - No qualifying bean of type found for dependency

I've started my project by creating entities, services and JUnit tests for services using Spring and Hibernate. All of this works great. Then I've added spring-mvc to make this web application using many different step-by-step tutorials, but when I'm trying …

Read More
Why is my Spring @Autowired field null?

Note: This is intended to be a canonical answer for a common problem. I have a Spring @Service class (MileageFeeCalculator) that has an @Autowired field (rateService), but the field is null when I try to use it. The logs show …

Read More
Understanding Spring @Autowired usage

I am reading the spring 3.0.x reference documentation to understand Spring Autowired annotation: 3.9.2 @Autowired and @Inject I am not able to understand the below examples. Do we need to do something in the XML for it to work? EXAMPLE 1 public …

Read More