try{
String userName=request.getParameter("username");
String password=request.getParameter("password");
System.out.println(userName);
System.out.println(password);
List<HashMap<String,Object>>list=JDBCOption.query(SQLConstant.loginQuery, userName,password);
List rs=JDBCOption.query(SQLConstant.loginQuery, userName,password);
if(list.size()>0)
{
HttpSession session=request.getSession(true);
System.out.println("111");
//Integer userID=(Integer)(list.get(0).get("id"));
System.out.println("222");
//String userName1=(String) (list.get(0).get("username"));
System.out.println(userName);
//request.getSession().setAttribute(Constant.USERID_MARK,userID);
request.getSession().setAttribute(Constant.USER_NAME_MARK,userName);
//session.putValue(Constant.USER_NAME_MARK, userName);
//session.setAttribute(Constant.USER_NAME_MARK, userName);
System.out.println(Constant.USER_NAME_MARK);
response.sendRedirect("/index.jsp");
}