第八周
<%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/4/24 Time: 20:05 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> <form name="formName" action="dologin.jsp" method="post"> <input name="uname"><br> <input type="password" name="password"><br> <input type="button" value="登录" onclick="login()"> </form> <script type="text/javascript"> function login(){ if(formName.uname.value==""||formName.password.value==""){ alert("账号或密码不能为空!"); return; } formName.submit(); } </script> </body> </html>
<%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/4/24 Time: 20:07 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <% String uname = request.getParameter("uname"); String password = request.getParameter("password"); if (uname.equals(password)) { session.setAttribute("uname", uname); request.getRequestDispatcher("main.jsp").forward(request, response); } else { %> <script type="text/javascript"> alert("登录失败"); </script> <% request.getRequestDispatcher("login.jsp").forward(request, response); } %> </body> </html>
<%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/4/24 Time: 20:07 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <% String uname = request.getParameter("uname"); String password = request.getParameter("password"); if (uname.equals(password)) { session.setAttribute("uname", uname); request.getRequestDispatcher("main.jsp").forward(request, response); } else { %> <script type="text/javascript"> alert("登录失败"); </script> <% request.getRequestDispatcher("login.jsp").forward(request, response); } %> </body> </html>
<%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/4/24 Time: 20:08 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <%session.invalidate(); %> <script type="text/javascript"> window.location.href="main.jsp"; </script> </body> </html>
2.
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String uname = (String) session.getAttribute("uname"); if (uname == null) { response.sendRedirect("login.jsp"); } else { out.print("欢迎" + uname + "登录！"); } %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title></title> </head> <body> <a href="login.jsp">退出登录</a> <form action="car.jsp" method="post"> <table border="1" width="600px" height="300px"> <thead> <tr> <th>商品名称</th> <th>价格</th> <th>加购</th> </tr> </thead> <tbody> <tr> <td>橙子</td> <td>5</td> <td><input type="checkbox" name="gw" value="橙子"></td> </tr> <tr> <td>西瓜</td> <td>2</td> <td><input type="checkbox" name="gw" value="西瓜"></td> </tr> <tr> <td>苹果</td> <td>1</td> <td><input type="checkbox" name="gw" value="苹果"></td> </tr> <tr> <td colspan="3"><input type="submit" value="加购"></td> </tr> </tbody> </table> </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></title> </head> <body> <%session.invalidate();%> <script type="text/javascript"> window.location.href="main.jsp"; </script> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title></title> </head> <body> <h2>购物车：</h2> <% request.setCharacterEncoding("UTF-8"); String[] gw = request.getParameterValues("gw"); if(gw == null){ out.print("购物车为空！"); }else{ for(int i = 0; i < gw.length; i++){ out.print(gw[i]+"<br>"); } } %> </body> </html>
