1.
<%
@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <form name="form" action="2.jsp" method="post"> 用户名:<input type="text" name="uname"><br> 密码:<input type="password" name="upwd"><br> <input type="submit" value="登录" > </form> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <% String uname=request.getParameter("uname"); String upwd=request.getParameter("upwd"); if(uname.equals(upwd)){ session.setAttribute("uname", uname); request.getRequestDispatcher("3.jsp").forward(request,response); }else{ request.getRequestDispatcher("4.jsp").forward(request,response); } %> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <h1>登陆成功!</h1> <% String uname = (String) session.getAttribute("uname"); if (uname == null) response.sendRedirect("1.jsp"); %> <form name="form1" action="5.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> <html> <head> <title>no</title> </head> <body> <h1>登陆失败!!</h1> <%response.setHeader("refresh", "5;url=1.jsp");%> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title>logout</title> </head> <body> <% session.invalidate(); response.setHeader("refresh", "5;url=1.jsp"); %> </body> </html>

  

 

 

 

2.
<%
@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <form name="form" action="2.jsp" method="post"> 用户名:<input type="text" name="uname"><br> 密码:<input type="password" name="upwd"><br> <input type="submit" value="登录" > </form> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <% String uname=request.getParameter("uname"); String upwd=request.getParameter("upwd"); if(uname.equals(upwd)){ session.setAttribute("uname", uname); request.getRequestDispatcher("3.jsp").forward(request,response); }else{ request.getRequestDispatcher("4.jsp").forward(request,response); } %> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <h1>登陆成功!</h1> <% String uname = (String) session.getAttribute("uname"); if (uname == null) response.sendRedirect("1.jsp"); %> <form action="6.jsp" method="post"> 商品:<br> <br> 衣服<input type="checkbox" name="item" value="yifu">加入购物车 <br> 裤子<input type="checkbox" name="item" value="kuzi">加入购物车 <br> 裙子<input type="checkbox" name="item" value="qunzi">加入购物车<br><br> <input type="submit" value="加入购物车"> </form> <form name="form1" action="5.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> <html> <head> <title>no</title> </head> <body> <h1>登陆失败!!</h1> <%response.setHeader("refresh", "5;url=1.jsp");%> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title>logout</title> </head> <body> <% session.invalidate(); response.setHeader("refresh", "5;url=1.jsp"); %> </body> </html>    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML> <html> <head> <title></title> </head> <body> <% 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>

  

 

 

 

 

posted on 2022-04-24 14:58  郝梦瑶  阅读(7)  评论(0编辑  收藏  举报