Spring what is application context

This is, having two or more ApplicationContext s in the same application. From the last example in the console application, this is easy to check:. Note that we have two application contexts using the same XML configuration. Can you do this? Yes, you're actually seeing it here. What's the difference, then? The main difference is that Spring beans singleton scopes are singleton per application context , this mean when retrieving a Bar bean that's configured in applicationContext.

Is this considered a good or bad practice? Neither , it will depend on the problem to be solved in case of last example, I would say it is a bad practice. Most people would recommend having all your beans configured in a single place via XML or another and loaded by a single application context. The ApplicationContext is the central interface within a Spring application that is used for providing configuration information to the application.

It's created when the application starts running. In summary, we can say the Application context is a Configuration object created for application to run. The applicationContext. It's a web aware ApplicationContext. 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. What is this? Ask Question. Asked 8 years ago. Active 5 months ago. These classes can be registered via register method or passing base packages to scan method. This class may be used when we configure ContextLoaderListener servlet listener or a DispatcherServlet in a web. From Spring 3. Skip to content.

Change Language. Related Articles. Table of Contents. Save Article. Improve Article. Like Article. The first step is to create factory object where we used framework API FileSystemXmlApplicationContext to create the factory bean after loading the bean configuration file from the given path.

The second step is used to get the required bean using getBean method of the created context. This method uses bean ID to return a generic object, which finally can be casted to the actual object. Once you have an object, you can use this object to call any class method. Once you are done with creating the source and bean configuration files, let us run the application. The name is a property to set the application name. MyBean implements the ApplicationContextAware.

Spring Boot injects the application context into the parameter of the setApplicationContext method, where we get the Id of the Spring application. The Id here is the name of the application. In the Application , we create a bean, call its method and set up the Spring Boot application.

The CommandLineRunner interface indicates that a bean should run when it is contained within a SpringApplication. It can be used to create command line applications in Spring Boot.