25 监听器Listener——ServletContext监听器

ServletContext监听器

有关信息请跳转这里

两个接口

ServletContextListener：监听servletContextListener对象的创建和销毁

ServletContextAttributeListener：监听servletContextListener对象里的数据的增删改

 

示例：

public class Listener implements ServletContextListener,ServletContextAttributeListener{
	
	/*------------------------application监听器-----------------------------------------*/
	@Override
	public void attributeAdded(ServletContextAttributeEvent event) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void attributeRemoved(ServletContextAttributeEvent event) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void attributeReplaced(ServletContextAttributeEvent event) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void contextDestroyed(ServletContextEvent sce) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void contextInitialized(ServletContextEvent sce) {
		// TODO Auto-generated method stub
		
	}
	
	
}