org.apache.shiro.web.env
Class EnvironmentLoaderListener

java.lang.Object
  org.apache.shiro.web.env.EnvironmentLoader
      org.apache.shiro.web.env.EnvironmentLoaderListener

All Implemented Interfaces:

EventListener, javax.servlet.ServletContextListener

public class EnvironmentLoaderListener
extends EnvironmentLoader
implements javax.servlet.ServletContextListener

Bootstrap listener to startup and shutdown the web application's Shiro WebEnvironment at ServletContext startup and shutdown respectively. This class exists only to implement the ServletContextListener interface. All 'real' logic is done in the parent EnvironmentLoader class.

Usage

Define the following in web.xml:

 <listener>
     <listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class>
 </listener>
 

Configuration options, such as the WebEnvironment class to instantiate as well as Shiro configuration resource locations are specified as ServletContext context-params and are documented in the EnvironmentLoader JavaDoc.

Shiro Filter

This listener is almost always defined in conjunction with the ShiroFilter to ensure security operations for web requests. Please see the ShiroFilter JavaDoc for more.

Since:

1.2

See Also:

EnvironmentLoader, ShiroFilter

Field Summary

Fields inherited from class org.apache.shiro.web.env.EnvironmentLoader

CONFIG_LOCATIONS_PARAM, ENVIRONMENT_ATTRIBUTE_KEY, ENVIRONMENT_CLASS_PARAM

Constructor Summary

EnvironmentLoaderListener()

Method Summary

void	contextDestroyed(javax.servlet.ServletContextEvent sce) Destroys any previously created/bound WebEnvironment instance created by the contextInitialized(javax.servlet.ServletContextEvent) method.
void	contextInitialized(javax.servlet.ServletContextEvent sce) Initializes the Shiro WebEnvironment and binds it to the ServletContext at application startup for future reference.

Methods inherited from class org.apache.shiro.web.env.EnvironmentLoader

createEnvironment, customizeEnvironment, destroyEnvironment, determineWebEnvironmentClass, initEnvironment

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EnvironmentLoaderListener

public EnvironmentLoaderListener()

Method Detail

contextInitialized

public void contextInitialized(javax.servlet.ServletContextEvent sce)

Initializes the Shiro WebEnvironment and binds it to the ServletContext at application startup for future reference.

Specified by:

contextInitialized in interface javax.servlet.ServletContextListener

Parameters:

sce - the ServletContextEvent triggered upon application startup

contextDestroyed

public void contextDestroyed(javax.servlet.ServletContextEvent sce)

Destroys any previously created/bound WebEnvironment instance created by the contextInitialized(javax.servlet.ServletContextEvent) method.

Specified by:

contextDestroyed in interface javax.servlet.ServletContextListener

Parameters:

sce - the ServletContextEvent triggered upon application shutdown