（求助）关于j2ee中application的setAttribute不能创建值

                public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
ServletContext application=this.getServletContext();

Integer accessCount=(Integer) application.getAttribute("accessCount");
if(accessCount==null)
accessCount=0;
else
accessCount=accessCount+1;

application.setAttribute("accessCouunt", accessCount);

out.println(accessCount);

       }

经过我的调试，我发现accessCount的值永远都是null值，这到底是怎么回事啊？
为什么下面的application.setAttribute()不创建呢？ application j2ee
[解决办法]
application.setAttribute("accessCouunt", accessCount);
//这里变量名不对，应该是accessCount