第七周作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <% double price=98.78; %> <p style="font-family: 宋体;font-size: 36; color:blue"> 商品编号A10001，价格 8765 <a href="ex02.jsp?id=A10001&price=8765">购买</a><br> 商品编号A10002，价格<%=price %> <a href="ex02.jsp?id=A10002&price=<%=price %>">购买</a><br> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <p style="font-family: 宋体;font-size: 36"; color:blue> <% String id=request.getParameter("id"); String price=request.getParameter("price"); out.print("商品编号："+id+"</br>"+"商品价格"+price); %> </body> </html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <form action="ex02.jsp"> <p style="font-family: 宋体;font-size: 18; color:blue"> 输入运算数，选择运算符号： <input type="text" name="one" size=6/> <select name="op"> <option value="+">加</option> <option value="-">减</option> <option value="*">乘</option> <option value="/">除</option> </select> <input type="text" name="two" size=6/> <br><input type="submit" value="提交"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <p style="font-family: 宋体;font-size: 18; color:black"> <% String one=request.getParameter("one"); String two=request.getParameter("two"); String op=request.getParameter("op"); if(one==null||one.length()==0){ response.sendRedirect("ex01.jsp"); return; } else if(two==null||two.length()==0){ response.sendRedirect("ex01.jsp"); return; } double a=Double.parseDouble(one); double b=Double.parseDouble(two); double r=0; try{ if(op.equals("+")){ r=a+b; } else if(op.equals("-")){ r=a-b; }else if(op.equals("*")){ r=a*b; }else if(op.equals("/")){ r=a/b; } out.print(a+op+b+"="+r); } catch(Exception e){ out.print("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"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <script type="text/javascript"> function login(){ if(logindo.admin.value==""){ alert("请输入账号"); return; } else if(logindo.pass.value==""){ alert("请输入密码"); return; } logindo.submit(); } </script> <form action="ex02.jsp" name ="logindo"> <p style="font-family: 宋体;font-size: 18; color:blue"> 账号： <input type="text" name="admin" size=6/> 密码： <input type="password" name="pass" size=6/> <br><input type="button" value="登录" onclick="login()"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <% String admin=request.getParameter("admin"); String pass=request.getParameter("pass"); if(admin.equals(pass)){ request.getRequestDispatcher("ok.jsp").forward(request, response); } else{ response.sendRedirect("no.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> 登录失败！！！！！！！ </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> 登录成功！！！！！！！ </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"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <script type="text/javascript"> function login(){ if(logindo.admin.value==""){ alert("请输入账号"); return; } else if(logindo.pass.value==""){ alert("请输入密码"); return; } logindo.submit(); } </script> <form action="ex02.jsp" name ="logindo"> <p style="font-family: 宋体;font-size: 18; color:blue"> 账号： <input type="text" name="admin" size=6/> 密码： <input type="password" name="pass" size=6/> 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="button" value="登录" onclick="login()"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <% String admin=request.getParameter("admin"); String pass=request.getParameter("pass"); if(admin.equals(pass)){ request.getRequestDispatcher("ok.jsp").forward(request, response); } else{ response.sendRedirect("no.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <h1>登录失败！！！！！！！</h1> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <h1>登录成功！！！！！！！</h1> <% String []yes=request.getParameterValues("yes"); for(int i=0;i<yes.length;i++){ if(yes[i].equals("注册")){ out.print("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"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <form action="ex02.jsp" name ="logindo"> <p style="font-family: 宋体;font-size: 18; color:blue"> 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"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <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。
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <script type="text/javascript"> function login(){ if(logindo.admin.value==""){ alert("请输入账号"); return; } else if(logindo.pass.value==""){ alert("请输入密码"); return; } logindo.submit(); } </script> <form action="ex02.jsp" name ="logindo"> <p style="font-family: 宋体;font-size: 18; color:blue"> 账号： <input type="text" name="admin" size=6/> 密码： <input type="password" name="pass" size=6/> <br><input type="button" value="登录" onclick="login()"/> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <% String admin=request.getParameter("admin"); String pass=request.getParameter("pass"); if(admin.equals(pass)){ request.getRequestDispatcher("ok.jsp").forward(request, response); } else{ response.sendRedirect("no.jsp"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <% String admin=request.getParameter("admin"); String uname=request.getParameter("uname"); out.print("账号："+admin+"</br>"+"用户名称"+uname); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> 登录失败！！！！！！！ </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> 登录成功！！！！！！！ <% String admin=request.getParameter("admin"); %> <form action="ex03.jsp"> 用户名：<input type="text" name="uname" /> <input type="submit" value="提交"/> <input name="admin" type="hidden" value="<%= admin %>"> </form> </body> </html>
