What is portlet context in Spring?

Spring Portlet MVC supports beans whose lifecycle is scoped to the current HTTP request or HTTP Session (both normal and global). This is not a specific feature of Spring Portlet MVC itself, but rather of the WebApplicationContext container(s) that Spring Portlet MVC uses.

What is Spring application context?

Spring ApplicationContext ApplicationContext is a corner stone of a Spring Boot application. It represents the Spring IoC container and is responsible for instantiating, configuring, and assembling the beans.

What is bean context in Spring?

In Spring, the objects that form the backbone of your application and that are managed by the Spring IoC container are called beans. A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container.

What is the difference between BeanFactory and ApplicationContext?

While the BeanFactory provides basic functionality for managing and manipulating beans, often in a programmatic way, the ApplicationContext provides extra functionality like MessageSource, Access to resources, Event propagation to beans, Loading of multiple (hierarchical) contexts etc.

What is portlet application?

Portlets are reusable web modules that provide access to Web-based content, applications, and other resources. Portlets can run on the application server because it has an embedded JSR 286 Portlet container.

What is Spring remoting?

The Spring approach to HTTP Remoting allows clients to communicate with the Spring-hosted server code via HTTP without the client code requiring any knowledge of HTTP being used. Instead, the client Java code only “sees” normal business-related Java objects (usually interfaces) rather than HTTP-specific objects.

Can we have two application context in Spring?

You can have two contexts within an application. If you have two contexts each will have its own singleton.

What are the types of application context in Spring?

5. Types of ApplicationContext

  • 5.1. AnnotationConfigApplicationContext. First, let’s see the AnnotationConfigApplicationContext class, which was introduced in Spring 3.0.
  • 5.2. AnnotationConfigWebApplicationContext.
  • 5.3. XmlWebApplicationContext.
  • 5.4. FileSystemXMLApplicationContext.
  • 5.5. ClassPathXmlApplicationContext.

What is Spring context module?

The Context module uses the base provided by the Core and Beans modules. It has access rights for any objects that define and configure. In the Context module, the major point is the ApplicationContext interface. In the Spring framework, a powerful language tool for querying is given by the Expression Language Module.

Why application context is better than BeanFactory?

The ApplicationContext comes with advanced features, including several that are geared towards enterprise applications, while the BeanFactory comes with only basic features. Therefore, it’s generally recommended to use the ApplicationContext, and we should use BeanFactory only when memory consumption is critical.

What is the difference between @bean and @component?

@Component auto detects and configures the beans using classpath scanning whereas @Bean explicitly declares a single bean, rather than letting Spring do it automatically. @Component is a class level annotation whereas @Bean is a method level annotation and name of the method serves as the bean name.

What is portlet in web?

Portlets are reusable web modules that provide access to Web-based content, applications, and other resources. Portlets can run on the application server because it has an embedded JSR 286 Portlet container. The JSR 286 API provides backwards compatibility.