初学者在servlet中 request.setAttribute("error","1");
request.getRequestDispatcher("login.jsp").forward(request, response);在login.jsp中 String error=(String)request.getAttribute("error");
System.out.println("error="+error);
if("1".equals(error)){
out.println("<font color=black>用户名为空,请重新输入</font>");
}
结果得到erro=null;
求解??????
request.getRequestDispatcher("login.jsp").forward(request, response);在login.jsp中 String error=(String)request.getAttribute("error");
System.out.println("error="+error);
if("1".equals(error)){
out.println("<font color=black>用户名为空,请重新输入</font>");
}
结果得到erro=null;
求解??????
request.getRequestDispatcher("/login.jsp").forward(request, response);