1.
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> <form name="loginForm" action="login.jsp" method="post"> 账号:<input type="text" name="uname"><br> 密码:<input type="password" name="password"> <br> <input type="submit" value="登录" onclick="v()"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String password = request.getParameter("password"); if (uname.equals(password)) { session.setAttribute("uname", uname); request.getRequestDispatcher("1.main.jsp").forward(request, response); } else { response.sendRedirect("1.false.jsp"); } %> </body>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> <% session.invalidate(); response.setHeader("refresh", "5;url=1.login.jsp"); %> 退出成功! </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> 登陆失败! <% response.setHeader("refresh", "5;url=1.login.jsp"); %> </body> </html>
2.
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'main.jsp' starting page</title> </head> <body> <h1>登陆成功!</h1> <% String uname = (String) session.getAttribute("uname"); if (uname == null) response.sendRedirect("login.jsp"); %> <form action="show.jsp" method="post"> 商品:<br> <br> 苹果 ¥9.9<input type="checkbox" name="item" value="苹果">加入购物车 <br> 橙子 ¥7.88 <input type="checkbox" name="item" value="橙子"> 加入购物车 <br> 桔子 ¥6.88<input type="checkbox" name="item" value="桔子"> 加入购物车<br> <br> <input type="submit" value="加入购物车"> </form> <form name="form1" action="logout.jsp" method="post"> <input type="submit" value="退出登录"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'show.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String itemName[]=request.getParameterValues("item"); if(itemName==null){ out.print("未添加购物车"); } else{ for(int i=0;i<itemName.length;i++){ out.print("("+(i+1)+")"+itemName[i]+"<br>"); } } %> </body> </html>