第五次作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor=#ffccff> <% double price=98.78; %> <p style="font-family:宋体;foont-size:36;color:blue"> 商品编号 A1001,价格8765 <a href ="index.jsp?id=A1001&price=8765">购买</a><br> 商品编号 A1002,价格<%= price %> <a href ="index.jsp?id=A1001&price=<%= price %>">购买</a> </p> </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 bgcolor=#EEEEFF> <p style="font-family:宋体;foont-size:36;color:blue"> <% String id=request.getParameter("id"); String price=request.getParameter("price"); %> <b>商品编号:<%= id %></b> 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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor=#ffccff> <form action="index2.jsp" method=post name=form> <p style="font-family:宋体;foont-size:36;color:blue"> 输入运算数,选择运算符号:<br> <input type=text name="numberOne" size=6/> <select name="operator"> <option selected="selected" value="+">加 <option value="-">减 <option value="*">乘 <option value="/">除 </select> <input type=text name="numberTwo" size=6/> <br><input type="submit" name="submit" value="提交"/> </form> </p> </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 bgcolor=cyan> <p style="font-family:宋体;foont-size:36;color:blue"> <% String numberOne=request.getParameter("numberOne"); String numberTwo=request.getParameter("numberTwo"); String operator=request.getParameter("operator"); if(numberOne==null||numberOne.length()==0){ response.sendRedirect("audio.jsp"); return; } else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("audio.jsp"); return; } try{ double a=Double.parseDouble(numberOne); double b=Double.parseDouble(numberTwo); double r=0; if(operator.equals("+")) r=a+b; else if(operator.equals("-")) r=a-b; else if(operator.equals("*")) r=a*b; else if(operator.equals("/")) r=a/b; out.print(a+""+operator+""+b+"="+r); } catch(Exception e){ out.print("请输入数字字符"); } %> </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> <%char[] a={'0','1','2','3','4','5','6','7','8','9'}; String yan=""; for(int i=0;i<4;i++){ yan=yan+a[(int)(Math.random()*10)]; } %> <body> <form action="index.jsp"> 请输入账号：<input type="text" name="text" value="admin"/><br> 请输入密码：<input type="password" name="password" value="admin"/><br> 验证码：<input type="text" name="yanzheng" /><%=yan %><br> <input type="hidden" name="yan" value="<%=yan %>"/> <input type="submit" value="登录"/> </form> </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 text = request.getParameter("text"); String password = request.getParameter("password"); String yanzheng=request.getParameter("yanzheng"); String yan=request.getParameter("yan"); if(text!=null&&password!=null&&text.equals(password)&&yanzheng.equals(yan)){ request.getRequestDispatcher("q.jsp").forward(request, response); }else{ response.sendRedirect("m.jsp"); } %> </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> 登录成功！ </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> 登录失败！ </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> <%char[] a={'0','1','2','3','4','5','6','7','8','9'}; String yan=""; for(int i=0;i<4;i++){ yan=yan+a[(int)(Math.random()*10)]; } %> <body> <form action="J.jsp"> 请输入账号：<input type="text" name="text" value="admin"/><br> 请输入密码：<input type="password" name="password" value="admin"/><br> 验证码：<input type="text" name="yanzheng" /><%=yan %><br> 是否注册会员： <input type="checkbox" name="yes" value="注册"/>注册 <input type="checkbox" name="yes" value="不注册"/>不注册<br> <input type="hidden" name="yan" value="<%=yan %>"/> <input type="submit" value="登录"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <% String text = request.getParameter("text"); String password = request.getParameter("password"); String yanzheng=request.getParameter("yanzheng"); String yan=request.getParameter("yan"); if(text!=null&&password!=null&&text.equals(password)&&yanzheng.equals(yan)){ request.getRequestDispatcher("q.jsp").forward(request, response); }else{ response.sendRedirect("m.jsp"); } %> <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> 登录失败！ </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> 登录成功！<br> 欢迎您注册为会员 </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> </head> <body> <form action="index2.jsp" name ="qq"> 请输入数字 <input type="text" name="num" size=6/> <br><input type="submit" 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> </head> <body> <% String num=request.getParameter("num"); int n=Integer.parseInt(num); 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。（转发）request.getRequestDispacher.....forward
<%@ 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="J.jsp"> <input type="text" name="id" value="magic"/><br> <input type="password" name="password" value="magic"/><br> <input type="submit" value="登录"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <% String id=request.getParameter("id"); String password=request.getParameter("password"); if(id.equals(password)){ request.getRequestDispatcher("q.jsp").forward(request, response); }else{ response.sendRedirect("m.jsp"); } %> <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> 登录失败！ </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <%String src=request.getParameter("id"); %> <body> 登录成功！<br> <form action="n.jsp"> 姓名<input type="text" name="name"/><br> <input type="submit" value="提交"/> <input type="hidden" name="src" value="<%= src %>"/> </form> </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 src=request.getParameter("src"); String name=request.getParameter("name"); %> 账号：<%=src %><br> 密码：<%=name %> </body> </html>
