jsp第七周作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% double price = 98.78; %> <p style="font-family: 宋体;font-style: 36;color: blue"> 商品编号A1001,价格8765 <a href="index1.jsp?id=A1001&price=8765">购买</a> 商品编号A1002,价格<%=price%> <a href="index1.jsp?id=A1002&price=<%=price%>">购买</a> </p> </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> <p style="font-family: 宋体;font-style: 36;color: blue"> <% String id = request.getParameter("id"); String price = request.getParameter("price"); %> <strong>商品编号：<%=id%><br> 商品价格：<%=price%> </strong> </p> </body> </html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <form action="counter.jsp" method="post"> 输入运算数，选择运输符号：<br> <input type="text" name="num1" size="5"/> <select name="sel"> <option selected="selected" value="+">加</option> <option value="-">减</option> <option value="*">乘</option> <option value="/">除</option> </select> <input type="text" name="num2" size="5"/><br> <input type="submit" name="submit" value="提交"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <% request.setCharacterEncoding("utf-8"); String num1 = request.getParameter("num1"); String num2 = request.getParameter("num2"); String sel = request.getParameter("sel"); if (num1 == null || num1.length() == 0) { response.sendRedirect("input.jsp"); return; } else if (num2 == null || num2.length() == 0) { response.sendRedirect("input.jsp"); return; } try { double n1 = Double.parseDouble(num1); double n2 = Double.parseDouble(num2); double s = 0; if (sel.equals("+")) s = n1 + n2; else if (sel.equals("-")) s = n1 - n2; else if (sel.equals("*")) s = n1 * n2; else if (sel.equals("/")) s = n1 / n2; out.print(n1 + "" + sel + "" + n2 + "=" + s); } catch (Exception e) { out.print("输入错误"); } %> </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”。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <script> function yz() { if (form.user.value == "") { alert("账号不能为空!"); return; } if (form.password.value == "") { alert("密码不能为空!"); return; } if (form.validationCode.value == "") { alert("验证码不能为空，请输入验证码"); form.validationCode.focus(); return; } if (form.validationCode.value != form.validationCode1.value) { alert("请输入正确的验证码"); form.validationCode.focus(); return; } form.submit(); } </script> <% int intmethod1 = (int) ((((Math.random()) * 5)) + 1); int intmethod2 = (int) ((((Math.random()) * 5)) + 1); int intmethod3 = (int) ((((Math.random()) * 5)) + 1); int intmethod4 = (int) ((((Math.random()) * 5)) + 1); String intsum = intmethod1 + "" + intmethod2 + intmethod3 + intmethod4; %> <form action="index3.jsp" method="post" name="form"> <table> <tr> <td>用户名:<input type="text" name="user" /> </td> </tr> <tr> <td>密码：<input type="password" name="password" /> </td> </tr> <tr> <td>验证码：<input type="text" name="validationCode" onKeyDown="if(event.keyCode==13){form.submit.focus();}" size="6"> <input type="button" name="validationCode1" size="1" value="<%=intsum%>"></td> </tr> <tr> <td>是否注册会员：<input type="radio" name="hy" value="是" />是 <input type="radio" name="hy" value="否" />否 </td> </tr> <tr> <td><input type="button" value="登录" onclick="yz()" /> </td> </tr> </table> </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> <h1>登录成功</h1> <% request.setCharacterEncoding("utf-8"); String hy=request.getParameter("hy"); if(hy.equals("是")){ out.print("欢迎您注册为会员"); } %> </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> <% request.setCharacterEncoding("utf-8");%> <h1> 登录失败</h1> </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> <% request.setCharacterEncoding("utf-8"); String user = request.getParameter("user") == null ? "" : request .getParameter("user"); String password = request.getParameter("password") == null ? "" : request.getParameter("password"); if (user.equals(password)) { request.getRequestDispatcher("index1.jsp").forward(request, response); } else { request.getRequestDispatcher("index2.jsp").forward(request, response); } %> </body> </html>
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。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <form action="two.jsp" method="post"> <input type="text" name="text"/> <input type="submit" value="提交"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <% String text = request.getParameter("text"); int n = Integer.parseInt(text); for (int i = 0; i < n; i++) { out.print("欢迎" + "<br>"); } %> </body> </html>
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"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>shouye.jsp</title> </head> <body> <form action="panduan2.jsp" method="post" name="shouye"> 请输入账号：<input name="uname" type="text"/><br/> 请输入密码：<input name="password" type="password"/><br/> <input type="button" value="登录" onclick="denglu()"> <script type="text/javascript"> function denglu(){ if(shouye.uname.value==""){ alert("账号不能为空！"); return; } if(shouye.password.value==""){ alert("密码不能为空！"); return; } shouye.submit(); } </script> </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>panduan2.jsp</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname=request.getParameter("uname"); String password=request.getParameter("password"); if(uname.equals(password)){ request.getRequestDispatcher("zhuce.jsp").forward(request, response); }else{ out.print("登陆失败"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>zhuce.jsp</title> </head> <body> <%String a=request.getParameter("uname"); %> <form action="tijiao.jsp" method="post"> 请输入姓名：<input type="text" name="name" /><br/> <input type="hidden" name="b" value="<%=a %>" /> <input type="submit" name="ok" value="提交"/> </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>tijiao.jsp</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String name=request.getParameter("name"); String uname=request.getParameter("b"); %> 你的账号为：<%=uname %><br/> 你的姓名为：<%=name %> </body> </html>
