Seam页面conversation作用域的控制问题
seam框架中的conversation是个非常的棒的东西，但是在页面开启长对话后，结束的方法比较困惑，使用@End注解终觉得不踏实。我现在尝试的事件驱动模型解决方案如下。
在导航文件中如下配置：
<page view-id="/test/*" login-required="true"></page><page view-id="/test/listDepartment.xhtml"><action execute="#{org.jboss.seam.core.events.instance().raiseEvent('pageScopeControl', 'department')}"/><navigation from-action="#{departmentBean.add}"><redirect view-id="/test/editDepartment.xhtml" /></navigation></page> @Name("pageScopeObserver")@Scope(ScopeType.SESSION)public class PageScopeObserver {private String curPageScope;private String prePageScope;@In(value = "org.jboss.seam.core.conversation",required = false)Conversation conversation;@Observer("pageScopeControl")synchronized public void fetchPageScopeEvent(String pageEvent) {curPageScope = pageEvent;if (curPageScope.equals(prePageScope) == false) {prePageScope = curPageScope;if (conversation != null) {conversation.end();conversation.leave();}}}