错误如下:
org.apache.jasper.JasperException: Exception in JSP: /checklogin.jsp:57
.
.57:String userid=(String)session.getAttribute("userid");.
.
.
root cause java.lang.ClassCastException: java.lang.Integer
org.apache.jasper.JasperException: Exception in JSP: /checklogin.jsp:57
.
.57:String userid=(String)session.getAttribute("userid");.
.
.
root cause java.lang.ClassCastException: java.lang.Integer
String userid=(Integer)session.getAttribute("userid").toString();