Application context file in spring mvc

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Dependency injection is a pattern through which IoC is implemented and the act of connecting objects with other objects or injecting objects into objects is done by container rather than by the object themselves. The basis for the context package is the ApplicationContext interface, located in the org. Deriving from the BeanFactory interface, it provides all the functionality of BeanFactory.

A web application can define any number of DispatcherServlet instances. Each servlet will operate in its own namespace, loading its own application context with mappings, handlers, etc. Only the root application context as loaded by ContextLoaderListener, if any, will be shared. ContextConfiguration defines class-level metadata that is used to determine how to load and configure an ApplicationContext for integration tests.

Skip to content. So if you have a bean you need access to from both contexts it will have to be declared within the application context. Any dependencies that your Controller has such as on service-layer classes, DAOs, etc should be expressed as normal - through injection, either constructor injection or setter injection. The context where the controller is mapped just wires it up with any dependencies it needs as normal.

The Controller code never needs to work with Spring directly to get any beans, it is wired up with them. You should use dependency injection and your config files to load beans into your controllers, but if you do need to access the application context directly, any Controller that extends AbstractController or any of its descendents has access to the getApplicationContext method.

In stand alone application we can user context. In web applications we need to overwrite the ContextLoaderListener and call the contextInitialized.

You need to import the file containing the bean definitions of the service layer say, service-context. It can be done as:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How do you load a bean into Spring MVC's application context? Ask Question. Asked 12 years, 5 months ago.

Active 7 years, 6 months ago. Viewed 19k times. Improve this question. If you are not explicitly declaring the context configuration file name in web. In such scenarios, each DispatcherServlet would have a separate xxx-servlet.

But, applicationContext. If you want to change the name of that file name or change the location, add initi-param with contextConfigLocation as param name.