javax.servlet.ServletRequestListener Maven / Gradle / Ivy
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package javax.servlet;
import java.util.EventListener;
/**
* Interface for receiving notification events about requests coming
* into and going out of scope of a web application.
*
* A ServletRequest is defined as coming into scope of a web
* application when it is about to enter the first servlet or filter
* of the web application, and as going out of scope as it exits
* the last servlet or the first filter in the chain.
*
*
In order to receive these notification events, the implementation
* class must be either declared in the deployment descriptor of the web
* application, annotated with {@link javax.servlet.annotation.WebListener},
* or registered via one of the addListener methods defined on
* {@link ServletContext}.
*
*
Implementations of this interface are invoked at their
* {@link #requestInitialized} method in the order in which they have been
* declared, and at their {@link #requestDestroyed} method in reverse
* order.
*
* @since Servlet 2.4
*/
public interface ServletRequestListener extends EventListener {
/**
* Receives notification that a ServletRequest is about to go out
* of scope of the web application.
*
* @param sre the ServletRequestEvent containing the ServletRequest
* and the ServletContext representing the web application
*/
public void requestDestroyed(ServletRequestEvent sre);
/**
* Receives notification that a ServletRequest is about to come
* into scope of the web application.
*
* @param sre the ServletRequestEvent containing the ServletRequest
* and the ServletContext representing the web application
*/
public void requestInitialized(ServletRequestEvent sre);
}