What is application context in servlet?
Every Java web applications based on Servlet technology will have a servlet context, whether it’s a spring application or not. In contrast, the ApplicationContext is a Spring thing; in very simple terms, it’s a container to hold Spring beans. To initiate the value for both ApplicationContext and ServletContext, in web.
How many servlet context is available for an application?
There can only be one ServletContext object per web application.
What is the use of web application context?
Interface WebApplicationContext. Interface to provide configuration for a web application. This is read-only while the application is running, but may be reloaded if the implementation supports this.
What is difference between application context and web application context?
So we can say that both ApplicationContext and WebApplicationContext are the spring containers where WebApplicationContext is child of the ApplicationContext interface. WebApplicationContext has javax. servlet. ServletContext that means it’s able to communicate with the container.
What is application context in Spring MVC?
The Application Context is Spring’s advanced container. Similar to BeanFactory, it can load bean definitions, wire beans together, and dispense beans upon request. BeanFactory can still be used for lightweight applications like mobile devices or applet-based applications.
How do you declare an application context?
- The first step is to create factory object where we used framework APIFileSystemXmlApplicationContext 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.
Which of the following are provided by application context?
ApplicationContext provides basic features in addition to enterprise-specific functionalities which are as follows:
- Publishing events to registered listeners by resolving property files.
- Methods for accessing application components.
- Supports Internationalization.
- Loading File resources in a generic fashion.
Which context is true about servlet?
Which of the following is true about servlets? Explanation: Servlets execute within the address space of a web server. Since it is written in java it is platform independent. The full functionality is available through libraries.
What is application context in MVC?
Spring application has two types of context configuration files for Spring MVC module: ApplicationContext (default name for this file is applicationContext. xml) WebApplicationContext (default name for this file is xxx-servlet. xml where xxx is the DispatcherServlet name in web.
Where is application context in Spring MVC?
xml file as the context configuration. The default location and name of the Root Application Context are under WEB-INF folder and applicationContext.
What’s the difference between applicationcontext and servletcontext?
They are separate things. Every Java web applications based on Servlet technology will have a servlet context, whether it’s a spring application or not. In contrast, the ApplicationContextis a Spring thing; in very simple terms, it’s a container to hold Spring beans.
How to get application object in a servlet?
In a servlet, you can get application object by calling getServletContext () from within the servlets code directly (the servlet itself implements the ServletConfig interface that contains this method) or by explicitly calling getServletConfig ().getServletContext (). The web container provides one ServletContext object per web application per jvm.
What does the Servlet context hold in spring?
Servlet Context holds all the configurations (init-param, context-params, etc) of the whole servlet application. It is a Spring specific thing. It is initialized by Spring. It holds all the bean definitions and life-cycle of the beans that are defined inside the spring configuration files. Servlet-Context has no idea about these things.
How are servletcontexts used in a distributed environment?
Only one ServletContext is available per web application. Every servlet in the same web application will have access to servletcontext. It is used to access application level parameter. If application is in distributed environment then there will be one servletcontext per JVM. ServletContext has init parameter that can be configured in web.xml.