JSP第八次作业
1.
<%-- 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: 20:08 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> <% if (session.getAttribute("uname") == null) { response.sendRedirect("login.jsp"); } else { String uname = (String) session.getAttribute("uname"); out.print("欢迎" + uname + "</br>"); %> <a href="logout.jsp">退出登录</a> <% } %> </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 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: 20:16 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: 20:17 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 = (String) session.getAttribute("uname"); //如果他是空,说明没登陆,直接访问该页面了 if (uname == null) response.sendRedirect("../login/login.jsp"); %> 欢迎你<%=uname%><br> <br> <a href="logout.jsp">退出登录</a> <hr> 商品展示: <br> 欢迎进入水果商城: <br> <hr> <form action="show.jsp" method="post"> 请选择要加入购物车的商品:<br> <input type="checkbox" name="list" value="荔枝"> 荔枝 9.99/kg<br> <input type="checkbox" name="list" value="桃子"> 桃子 6.88/kg<br> <input type="checkbox" name="list" value="西瓜"> 西瓜 7.99/kg<br> <hr> <input type="submit" value="加入购物车"> </form> </body> </html>
<%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/4/24 Time: 20:20 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> <h2>购物车添加的商品有:</h2> <% request.setCharacterEncoding("utf-8"); String listName[] = request.getParameterValues("list"); if (listName == null) { out.print("购物车为空!"); } else { for (int i = 0; i < listName.length; i++) { out.print("(" + (i + 1) + ")" + listName[i] + "<br>"); } } %> </body> </html>
<%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/4/24 Time: 20:20 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>