第七周作业
1.教材P78-79 例4-9
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body bgcolor=#ffccff> <% double p = 98.78; %> <p>商品编号A1001,价格 8765</p> <a href="receive.jsp?id=A1001&price=8765">购买</a> <p>商品编号A1002,价格</p> <a href="receive.jsp?id=A1002&price=<%=p%>">购买</a> </body> </html>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body bgcolor=#eeeeff> <% String id = request.getParameter("id"); String price = request.getParameter("price"); %> <b>商品编号:<%=id%></b> <br> <b>商品价格:<%=price%></b> </body> </html>
2.教材P97 实验2
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body bgcolor=#ffccff> <form action="computer.jsp" method=post> <p> 输入运算数,选择运算符号:<br> <input type=text name="no" size=6 /> <select name="oa"> <option selected="selected" value="+">加 <option value="-">减 <option value="*">乘 <option value="/">除 </select> <input type=text name="nt" size=6 /> <br> <input type="submit" name="submit" value="提交"> </p> </form> </body> </html>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body bgcolor=cyan> <p> <% String no = request.getParameter("no"); String nt = request.getParameter("nt"); String oa = request.getParameter("oa"); if (no == null || no.length() == 0) { response.sendRedirect("input.jsp"); return; } else if (nt == null || nt.length() == 0) { response.sendRedirect("input.jsp"); return; } try { double a = Double.parseDouble(no); double b = Double.parseDouble(nt); double r = 0; if (oa.equals("+")) { r = a + b; } else if (oa.equals("-")) { r = a - b; } else if (oa.equals("*")) { r = a * b; } else if (oa.equals("/")) { r = a / b; } out.print(a + oa + b + "=" + r); } catch (Exception e) { } %> </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)
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <form action="Login1.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> <input type="submit"value="登陆"> </form> <br> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% String account=request.getParameter("account"); String password=request.getParameter("password"); if(account.equals(password)){ response.sendRedirect("welcome.jsp"); }else{ out.print("登录错误"); }%> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <%out.print("登陆成功,欢迎来到本系统"); %> <br> </body> </html>
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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <form action="Login1.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> 是否注册会员 <input type="checkbox" name="huiyuan" value="yes">是 <input type="checkbox" name="huiyuan" value="no">否<br> <input type="submit"value="登陆"><br> </form> <br> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% String account=request.getParameter("account"); String password=request.getParameter("password"); String huiyuan=request.getParameter("huiyuan"); if(account.equals(password)){ out.print("注册成功"); }else if(account.equals(password)&&huiyuan.equals("yes")) {out.print("欢迎您成为会员!"); }else if(account.equals(password)&&huiyuan.equals("no")) { out.print("没有成为会员"); }else{ out.print("登录错误");} %> </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"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>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</title> </head> <body> <form action="second.jsp"> 输入一个数:<input type="text" name="shu"><br> <input type="submit" value="提交"> </form> </body> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% String shu=request.getParameter("shu"); int n=Integer.parseInt(shu); for(int i=0;i<n;i++){ out.print("欢迎"+"!! "); } %> </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" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body> <script type="text/javascript"> function login() { if (formtext.caccount.value != formtext.cpassword.value) { alert('账号与密码不同'); return; } formtext.submit(); } </script> <form name="formtext" action="setName.jsp" method="post"> <b>账号</b> <input type="text" name="caccount" /> <br> <b>密码</b> <input type="password" name="cpassword" /> <br> <input type="button" onclick="login()" value="登录" /> </form> </body> </html>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body> <% request.setCharacterEncoding("utf-8"); %> <% String account = request.getParameter("caccount"); %> <form action="verificationthird.jsp" method="post"> <b>姓名</b><input type="text" name="cname"> <input name="caccount" type="hidden" value="<%=account%>"> <input type="submit" value="登录" /> </form> </body> </html>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body> <% request.getRequestDispatcher("twoShow.jsp").forward(request, response); %> </body> </html>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body> <% request.setCharacterEncoding("utf-8"); %> <% String account = request.getParameter("caccount"); String name = request.getParameter("cname"); %> <h1> 账号:<%=account%></h1> <h1> 姓名:<%=name%></h1> </body> </html>