Spring: Make an Externally Created Object Available to Beans in applicationContext.xml
Spring: Make an Externally Created Object Available to Beans in applicationContext.xml
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If your Spring beans need access to an object that is not created by Spring itself, you can “inject” it into the context by using a static parent context and registering the object with it. Beans can then reference it just as if it was defined in the application context file.
Java: Configure ApplicationContext with an Injected Bean
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.context.support.StaticApplicationContext;
Object externalyDefinedBean = ...;
GenericApplicationContext parentContext = new StaticApplicationContext();
parentContext.getBeanFactory().registerSingleton("injectedBean", externalyDefinedBean);
parentContext.refresh(); // seems to be required sometimes
ApplicationContext context = new FileSystemXmlApplicationContext(springConfigs, parentContext);
Xml: Make Use of It
<bean id="springBean" class="your.SpringBeanType"> <!-- Note: The injectedBean is defined outside of Spring config --> <property name="someProperty" ref="injectedBean" /> </bean>
Viola!
From http://theholyjava.wordpress.com/2011/10/11/spring-make-an-externally-created-object-available-to-beans-in-applicationcontext-xml/
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