这段提示是什么意思

这是IndexAction:

public class IndexAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
IndexForm indexForm = (IndexForm) form;

HttpSession session = request.getSession();
IndexOper op = new IndexOper();
if(op.getControlResult(indexForm))
{
User user = op.get_user(indexForm);
session.setAttribute("user",user);
String uname = request.getParameter("user");
session.setAttribute("uname",uname);
return mapping.findForward("success");
}

return mapping.findForward("fail");
}
}



//这是IndexOper
public class IndexOper {
public boolean getControlResult(IndexForm user)
{
boolean flag = false;
Connection con=null;
PreparedStatement st=null;
ResultSet rs=null;
DBdrive db=new DBdrive();

try
{
con = db.getDBdrive();
st = con.prepareStatement("select * from administrator where user_name=? and user_pwd=? ");
st.setString(1,user.getUser_name());
st.setString(2,user.getUser_pwd());
rs = st.executeQuery();
while(rs.next())
{
if(user.getUser_name().equals(rs.getString(1))&&user.getUser_pwd().equals(rs.getString(2)));
flag=true;
}
return flag;
}
catch(Exception e)
{
return false;
}
finally
{
//db.CloseDBdriver();
}
}


public User get_user(IndexForm user){
Connection con=null;
PreparedStatement st=null;
ResultSet rs=null;
User us = new User();
DBdrive db=new DBdrive();
try
{
con = db.getDBdrive();
st = con.prepareStatement("select * from administrator where user_name=? and user_pwd=? ");
st.setString(1,user.getUser_name());
st.setString(2,user.getUser_pwd());
rs = st.executeQuery();

if(rs.next()){

us.setU_id(rs.getInt("user_id"));
us.setU_name(rs.getString("user_name"));
}
}catch(Exception e){

}
finally
{
//db.CloseDBdriver();
}
return us;
}
}