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The following page has been changed by FrankZammetti: http://wiki.apache.org/struts/StrutsInitialization ------------------------------------------------------------------------------ Up to StrutsNewFaqs ---- - {{{ How to execute an initialization method before the first (web-)user interaction }}} + {{{ How to execute an initialization method before the first (web-)user interaction... }}} = Answers = @@ -75, +75 @@ 1 </load-on-startup> </servlet> }}} + ---- + = #4 Use a ContextListener = + {{{In web.xml: + + <listener> + <listener-class>my.app.MyContextListener</listener-class> + </listener> + + Then, MyContextListener.java might be: + + package my.app; + import javax.servlet.ServletContextEvent; + import javax.servlet.ServletContextListener; + import java.util.HashMap; + public class MyContextListener implements ServletContextListener { + private static HashMap myConfigData = new HashMap(); + public void contextInitialized(ServletContextEvent sce) { + myConfigData.put("someKey", "someValue"); + } + public void contextDestroyed(ServletContextEvent sce) { } + public static Object getValue(String key) { + return myConfigData.get(key); + } + } + + Then, in your code you can call MyContextListener.getValue("someKey"); to retrieve the value. Naturally, you probably want to do something more complex than this like reading from a config file and creating some "real" configuration holder object, but you get the point :) + + Remember, you can do whatever you want here... it can be as simple or as complex as you like! + + Note that there is an existing listener in the Java Web Parts project that will take care of all the details and allow you to just provide a configuration file. It creates a config object for you on-the-fly (and it also has more advanced capabilities if you require more control over things). Details at http://javawebparts.sourceforge.net in the Listener package. + + }}} ---- Up to StrutsNewFaqs - --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
