Struts2 Core Developers Guide-DispatcherListener
1.主要功能在Dispatcher对象init或者destroy的时候执行某些代码接口如下
public void dispatcherInitialized(Dispatcher du) { // do something to Dispatcher after it is initialized eg. du.setConfigurationManager(....); } public void dispatcherDestroyed(Dispatcher du) { // do some cleanup after Dispatcher is destroyed. }}
源代码上看只有Dispatcher.init()方法中和WebLogic相关的部分有调用到DispatcherListener的dispatcherInitialized方法，所有感觉该接口不是那么重要的样子。
private void init_CheckWebLogicWorkaround(Container container) { // test whether param-access workaround needs to be enabled if (servletContext != null && servletContext.getServerInfo() != null && servletContext.getServerInfo().indexOf("WebLogic") >= 0) { LOG.info("WebLogic server detected. Enabling Struts parameter access work-around."); paramsWorkaroundEnabled = true; } else { paramsWorkaroundEnabled = "true".equals(container.getInstance(String.class, StrutsConstants.STRUTS_DISPATCHER_PARAMETERSWORKAROUND)); } synchronized(Dispatcher.class) { if (dispatcherListeners.size() > 0) { for (DispatcherListener l : dispatcherListeners) { l.dispatcherInitialized(this); } } }}
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