org.ditchnet.jsp.taglib.twod.listener
Class TwoDServletContextListener

java.lang.Object
  org.ditchnet.jsp.taglib.twod.listener.TwoDServletContextListener

All Implemented Interfaces:

java.util.EventListener, javax.servlet.ServletContextListener

public class TwoDServletContextListener

extends java.lang.Object

implements javax.servlet.ServletContextListener

Since:

0.1

ServletContextListener that handles creating a directory named org.ditchnet.taglib.2d/ in this web app's root directory. Why do this? The <twod:canvas≷ tag generates images that can be referenced the src attributes of <img> tags. Therefore, they must be placed in a known location outside of the WEB-INF directory so that client browsers can access them.

By implementing this feature as as ServletContextListener, These resources are deployed immediately on reloading your web app, and are therefore available before the first request!

Version:

0.1

Author:

Todd Ditchendorf

Field Summary

static java.lang.String

DEST_FOLDER_NAME

Constructor Summary

TwoDServletContextListener()

Method Summary

void	contextDestroyed(javax.servlet.ServletContextEvent evt)
void	contextInitialized(javax.servlet.ServletContextEvent evt) Creates the directory to store images later.

Methods inherited from class java.lang.Object

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

Field Detail

DEST_FOLDER_NAME

public static final java.lang.String DEST_FOLDER_NAME

See Also:

Constant Field Values

Constructor Detail

TwoDServletContextListener

public TwoDServletContextListener()

Method Detail

contextInitialized

public void contextInitialized(javax.servlet.ServletContextEvent evt)

Creates the directory to store images later.

Specified by:

contextInitialized in interface javax.servlet.ServletContextListener

contextDestroyed

public void contextDestroyed(javax.servlet.ServletContextEvent evt)

Specified by:

contextDestroyed in interface javax.servlet.ServletContextListener