求助:jsp登陆出现错误,源码和错误如下,请指点.OK马上给分.多谢
chk-user.jsp
<%@ page contentType="text/html;charset=gb2312" %>
<jsp:useBean id="mybean" scope="page" class="dbbag.db"/>
<%
user_name=(String)(request.getParameter("user_name"));
user_pwd=(String)(request.getParameter("user_pwd"));
String sSql="select * from tb_user where user_name='" + user_name + "' ";
String str="";
String user_xm="";
int user_id;
String role_id="";
mybean.sqlDriver();
mybean.sqlQuery(sSql);
if(!mybean.rs.next())
{
response.sendRedirect("default.jsp");
}
else
{
if(mybean.rs.getString("user_sta").equals("0"))
{
if(!mybean.rs.getString("user_pwd").equals(user_pwd))
{
response.sendRedirect("default.jsp");
}
else
{
user_id=mybean.rs.getInt("user_id");
user_xm=mybean.rs.getString("user_xm");
role_id=mybean.rs.getString("role_id");
session.setAttribute("user_id",String.valueOf(user_id));
session.setAttribute("user_xm",user_xm);
session.setAttribute("role_id",role_id);
response.sendRedirect("index.jsp");
}
}
else
{
response.sendRedirect("default.jsp");
}
}
%>
错误信息:
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 2 in the jsp file: /chk-user.jsp
Generated servlet error:
[javac] Compiling 1 source file
D:\Tomcat\work\Standalone\localhost\examples\chk_0002duser_jsp.java:58: cannot resolve symbol
symbol : variable user_name
location: class org.apache.jsp.chk_0002duser_jsp
user_name=(String)(request.getParameter("user_name"));
^
An error occurred at line: 2 in the jsp file: /chk-user.jsp
Generated servlet error:
D:\Tomcat\work\Standalone\localhost\examples\chk_0002duser_jsp.java:59: cannot resolve symbol
symbol : variable user_pwd
location: class org.apache.jsp.chk_0002duser_jsp
user_pwd=(String)(request.getParameter("user_pwd"));
^
An error occurred at line: 2 in the jsp file: /chk-user.jsp
Generated servlet error:
D:\Tomcat\work\Standalone\localhost\examples\chk_0002duser_jsp.java:60: cannot resolve symbol
symbol : variable user_name
location: class org.apache.jsp.chk_0002duser_jsp
String sSql="select * from tb_user where user_name='" + user_name + "' ";
^
An error occurred at line: 2 in the jsp file: /chk-user.jsp
Generated servlet error:
D:\Tomcat\work\Standalone\localhost\examples\chk_0002duser_jsp.java:75: cannot resolve symbol
symbol : variable user_pwd
location: class org.apache.jsp.chk_0002duser_jsp
if(!mybean.rs.getString("user_pwd").equals(user_pwd))
^
4 errors