麻烦帮我看下这是哪里出错了，跟教程一模一样啊

Question

HTTP Status 500 - An exception occurred processing JSP page /details.jsp at line 21type Exception reportmessage An exception occurred processing JSP page /details.jsp at line 21description The server encountered an internal error that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: An exception occurred processing JSP page /details.jsp at line 21 18:       <tr> 19:        <% 20:           ItemsDAO itemDao=new ItemsDAO(); 21:           Items item =itemDao.getItemsById(Integer.parseInt(request.getParameter("id"))); 22:           if(item!=null){ 23:         %>  24:

Answer 1

我也出现了这个错误。请问你解决了吗

Answer 2

<%
     // 看一下request.getParameter("id")取到值了吗
     ItemsDAO itemDao=new ItemsDAO();
     String id = request.getParameter("id");
     if(null != id) {
      Items item =itemDao.getItemsById(Integer.parseInt(id));
     }
%>

Answer 3

请问是哪个教程呢？

Answer 4

服务器端错误