JSP第五次作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>p78 4-9</title> </head> <body bgcolor=#ffccff> <% double price=98.78; %> <p style="font-family:宋体;font-size:36;color:blue"> 商品编号A1001，价格8765 <a href="ex4-9-.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002，价格<%=price %> <a href="ex4-9-.jsp?id=A1002&price=<%=price %>">购买</a><br> </p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body bgcolor=#EEEEFF> <p style="font-family:宋体;font-size:36;color:blue"> <% String id=request.getParameter("id"); String price=request.getParameter("price"); %> 商品编号：<%=id %><br> 商品价格：<%=price %> </p> </body> </html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body bgcolor="#ffccff"> <form action="index1.jsp" method="post" name="form"> <p style="font-family: 宋体;font-size: 18; color: blue"> 输入运算数，选择运算符:<br> <input type="text" name="num1" size=6 /> <select name="oper"> <option selected="selected" value="+">加 <option value="-">减 <option value="*">乘 <option value="/">除 </select> <input type="text" name="num2" size=6 /> <input type="submit" value="提交"> </p> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body bgcolor="cyan"> <p style="font-family: 宋体; font-size: 18;color: black;"> <% String num1 = request.getParameter("num1"); String num2 = request.getParameter("num2"); String oper = request.getParameter("oper"); if (num1 == null || num1.length() == 0) { response.sendRedirect("index.jsp"); return; } else if (num2 == null || num2.length() == 0) { response.sendRedirect("index.jsp"); return; } try { double a = Double.parseDouble(num1); double b = Double.parseDouble(num2); double x = 0; if (oper.equals("+")) { x = a + b; } else if (oper.equals("-")) { x = a - b; } else if (oper.equals("*")) { x = a * b; } else if (oper.equals("/")) { x = a / b; } out.print(a+""+oper+""+b+"="+x); } catch (Exception e) { out.print("请输入数字字符"); } %> </p> </body> </html>
3.制作一个登陆表单，输入账号和密码，如果账号密码相同，跳转到“登录成功”页面，否则跳转到“登录失败”页面。（加上JS非空验证）（选做，加验证码）
4.在上题的表单中增加一个checkbox,让用户选择“是否注册为会员"，如果注册为会员，则在显示时增加文本“欢迎您注册为会员”。
<body> <script type="text/javascript"> function pass(){ if(loginForm.uname.value==""){ alert("账号不能为空!"); return; } if(loginForm.upwd.value==""){ alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form action="tz.jsp" method="post"> 请输入账号：<input name="account" type="text"><br> 请输入密码：<input name="password" type="password"><br> 是否注册为会员：<input type="checkbox" name="zc" value="yes">注册 <input type="checkbox" name="zc" value="n">不注册<br> <input type="submit" value="登陆"> </form> </body> <body> <% request.setCharacterEncoding("utf-8"); String account=request.getParameter("account")==null? "" :request.getParameter("account"); String password = request.getParameter("password") == null ? "" : request.getParameter("password"); if(account.equals(password)){ request.getRequestDispatcher("ok.jsp").forward(request, response); }else{ request.getRequestDispatcher("no.jsp").forward(request, response); } %> </body> <body> <h1>登陆成功</h1> <% request.setCharacterEncoding("utf-8"); String zc=request.getParameter("zc"); if(zc.equals("yes")){ out.print("欢迎您注册会员"); } %> </body> <body> 登陆失败<br> </body>
5.在页面1的表单内输人一个数字N，提交，能够在另一个页面打印N个“欢迎”字符串。
<body> <form action="tj.jsp"> <input type="text" name="num" /> <input type="submit" value="提交" /> </form> </body> <body> <% String number=request.getParameter("num"); int i=Integer.parseInt(number); for(int j=0;j<i;j++){ out.print("欢迎"+"<br>"); } %> </body>
6.在页面1中输入账号和密码,进行登录，如果账号和密码相同，则认为成功登录到页面2,在页面2中显示一个文本框输人用户姓名,输人之后提交,在页面3中显示用户的账号和姓名。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <script type="text/javascript"> function validate() { if (loginForm.account.value == "") { alert("账号不能为空!"); return; } if (loginForm.upwd.value == "") { alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="page02.jsp" method="post"> 账号:<input type="text" name="account"><br> 密码: <input type="password" name="upwd"> <br> <input type="button" value="登录" onClick="validate()"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'success.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <p>登录成功！</p> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); %> <form action="page05.jsp" method="post"> 用户名：<input type="text" name="username"><br> <br> <input type="submit" name="submit" value="提交"> <input type="hidden" name="account" value="<%=account%>"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'cheng.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body bgcolor=#EEEEFF> <p>登录失败！</p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'fail.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("page02.jsp").forward(request, response); else request.getRequestDispatcher("page03.jsp").forward(request, response); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'page05.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String uname = request.getParameter("username"); out.print("账号：" + account + "<br>" + "<br>"+"用户名：" + uname); %> </body> </html>
