org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.index_jsp

搞了半天发现是我的这个标签里面打了一个空格！！！！！

<jsp:forward page="/pages/shop.jsp"> </jsp:forward>//错误

<jsp:forward page="/pages/shop.jsp"></jsp:forward>//正确
or
<jsp:forward page="/pages/shop.jsp"/> //正确