request.setAttribute("error2","用户名不存在或密码错误");%><jsp:forwardpage="login.jsp"></jsp:forward><%}%> (4)增删改查界面源代码 <%@ page language="java"contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ...