是一个用于跳转的中间页面，可以省去自己再写跳转面的工夫，非常好用，一般导入到web-inf就可以了-Is an intermediate for the Jump page, might dispense with his own efforts to write Jump surface is very easy to use, the general introduction to web-inf could be a

在页面上显示时间,是一个JSP页面-This is a jsp page that could tell the now time