I have the following bean definitions in the application context XML:
<bean id="helloWorld" class="com.packt.lifecycle.HelloWorld">
</bean>
<bean name="message" class="java.lang.String">
<constructor-arg value="testing" />
</bean>
When I run the code:
AbstractApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
System.out.println(context.getBean("message"));
It displays fine, that is, "testing". BUT, when I make the helloWorld
bean implement BeanPostProcessor then the value of message
bean becomes null. Is this a bug?
Ok, found the problem. The 2 methods of the BeanPostProcessor must return the first argument. Instead I was returning null. I found the answer here: I am using bean post processor, and it is giving null pointer exception
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