<context-param>
    <param-name>test</param-name>
    <param-value>true</param-value>
</context-param>

 1 //方式一：
 2         Object object = ActionContext.getContext().getApplication().get("test");
 3         if(null != object && Boolean.valueOf(object.toString()))
 4         {
 5             System.out.println("logging...");
 6         }
 7         
 8         //方式二： Spring 的listener 就是从ServletContext中获取的 getInitParameter 
 9         String parameter = ServletActionContext.getServletContext().getInitParameter("test");
10         if(Boolean.valueOf(parameter))
11         {
12             System.out.println("duide");
13             //do sth...
14         }