What is ServletContextAware in Spring?
public interface ServletContextAware extends Aware. Interface to be implemented by any object that wishes to be notified of the ServletContext (typically determined by the WebApplicationContext ) that it runs in.
What is the use of ServletContextAware?
Usage of ServletContextAware interface You can hold all the records of a table in the ServletContext object using collection and get these information from any action class. In this way, performance of the web application will be increased.
What is root context in Spring?
1. Beans/configuraiton loaded by the ContextLoaderListener is the root context, everything loaded by a DispatcherServlet (or MessageDispatcherServlet for Spring-WS) is a child context. You can have multiple servlets which all have access to the root context (should contain shared resources like services, etc.).
What is AnnotationConfigWebApplicationContext in Spring?
AnnotationConfigWebApplicationContext (Spring Framework 5.3. 13 API)
What is the difference between Beanfactory and ApplicationContext?
a. One difference between bean factory and application context is that former only instantiate bean when you call getBean() method while ApplicationContext instantiates Singleton bean when the container is started, It doesn’t wait for getBean to be called.
What is context param in web xml Spring?
In a spring web application, contextConfigLocation context param gives the location of the root context. Your config is strange, for a spring-mvc application, because by default, servletname-servlet. xml (where servletname is the name of a DispatcherServlet servlet) is the child application context for the servlet.
How many types of context are there in Spring?
As you are using Spring boot, there is only one context by default: ApplicationContext .
What is DispatcherServlet and ContextLoaderListener?
Basic. The task of the DispatcherServlet is to send request to the specific Spring MVC controller. ContextLoaderListener reads the Spring configuration file (with value given against contextConfigLocation in web.xml ), parses it and loads the singleton bean defined in that config file.
What is the role of ApplicationContextAware in spring?
Spring provides an ApplicationContextAware interface that allows beans access to the ApplicationContext . This interface provides a single setApplicationContext method. The code overrides the setApplicationContext() method to lookup another bean with the id user using the injected ApplicationContext .
What is view resolver in Spring MVC?
Spring provides view resolvers, which enable you to render models in a browser without tying you to a specific view technology. The two interfaces which are important to the way Spring handles views are ViewResolver and View . The ViewResolver provides a mapping between view names and actual views.
How do we configure init params for JSP?
In JSP, config is an implicit object of type ServletConfig. This object can be used to get initialization parameter for a particular JSP page. The config object is created by the web container for each jsp page. Generally, it is used to get initialization parameter from the web.
