CODEWITHSUNDEEP
javaspringapplicationcontext
user1949763
user1949763

Reputation: 3813

Spring - Use applicationContext from .jar file added as a dependency

Imagine a situation where there are 2 independent modules - Module A and B. Both of them are constructed using Spring. Each of them have its own applicationContext - Module A works with applicationContextA and B - applicationContextB.
Module A contains facade class - defined in a bean moduleAFacade - that provides some functionality of Module A. Module B needs to access the functionality of Module A.
Let's have Module A added as a .jar dependency in the module B. There is this construction in applicationContextB: 

<bean id="moduleBBeanUsingModuleAfacade" class="com.example.moduleB">
    <property name="moduleAFacadeObject" ref="moduleAFacade" />
</bean>

But applicationContext of Module A is not accessible from Module B's appContext directly. I need to use something like 

<import resource="classpath*:moduleAApplicationContext.xml" />

Are there any other methods to access application contexts of .jar files added to the project as dependency?
Are there some best practises how to accomplish the task?


Upvotes: 2

Views: 9062

Answers (1)

Centonni
Centonni

Reputation: 402

You can define a configuration file in module A 

package you.organisation.moduleA.config;
@Configuration
@ImportResource("classpath:path/to/applicationContextA.xml")
public class ModuleAConfig implements Serializable {

}

and in the module B context file, you can access module A beans

<context:component-scan base-package="you.organisation.*.config" />

If you want to use Module B config files, tou do the same 

package you.organisation.moduleB.config;
@Configuration
@ImportResource("classpath:path/to/applicationContextB.xml")
public class ModuleBConfig implements Serializable {

}

and in the module that will use it

<context:component-scan base-package="you.organisation.*.config" />

About best practices you must be careful when using wildcards, please have a look to the section 4.7.2.2

Upvotes: 4

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