第五次作业
一、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"> <% double price=98.78; %> <html> <head> <!-- seven.jsp --> </head> <body> 商品编号 A1001,价格 8765 <a href="seven01.jsp?id=A1001&price=8765">购买</a><br> 商品编号 A1002,价格 <%=price %> <a href="seven01.jsp?id=A1002&price=<%=price %>">购买</a><br> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <% request.setCharacterEncoding("utf-8"); String id=request.getParameter("id"); String price=request.getParameter("price"); %> <html> <head> <!-- seven01.jsp --> </head> <body> <b>商品编号：<%=id %><br> 商品价格：<%=price %></b> </body> </html>
二、教材P97 实验2（计算器）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>jsq1.jsp</title> </head> <body> <form action="jsq2.jsp" method="post"> <p style="font-family:宋体;font-size: 18"> 输入运算数并选择运算符：<br/><br/> <input type="text" name="shu1" size=6 /> <select name="operator"> <option selected="selected" value="+">加 <option value="-">减 <option value="*">乘 <option value="/">除 </select> <input type="text" name="shu2" size=6 /> <br/><br/> <input type="submit" name="submit" value="提交"/> </p> </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>jsq2.jsp</title> </head> <body> <p style="font-family:宋体;font-size: 18"> <%String shu1=request.getParameter("shu1"); String shu2=request.getParameter("shu2"); String operator=request.getParameter("operator"); if(shu1==null||shu1.length()==0){ response.sendRedirect("jsq1.jsp"); return; }else if(shu2==null||shu2.length()==0){ response.sendRedirect("jsq1.jsp"); return; } try{ double a=Double.parseDouble(shu1); double b=Double.parseDouble(shu2); double sum=0; if(operator.equals("+")) sum=a+b; else if(operator.equals("-")) sum=a-b; else if(operator.equals("*")) sum=a*b; else if(operator.equals("/")) sum=a/b; out.print(a+""+operator+""+b+"="+sum); }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”。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head> <!-- seven04.jsp -->
</head>
<body>
<script>
function lg() {
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="seven05.jsp" method="post" name="form">
用户名:<input type="text" name="user" /> <br>
密码：<input type="password" name="password" /><br>
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%>"><br>
是否注册会员：<input type="radio" name="lg" value="是" />是
<input type="radio" name="lg" value="否" />否 <br>
<input type="submit" value="登录" onclick="yz()" />
<br>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!-- seven05.jsp --> </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("seven06.jsp").forward(request, response); } else { request.getRequestDispatcher("seven07.jsp").forward(request, response); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!-- seven06.jsp --> </head> <body> <h1>登陆成功</h1> <% request.setCharacterEncoding("utf-8"); String lg=request.getParameter("lg"); if(lg.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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!-- seven07.jsp --> </head> <body> <h1>登陆失败</h1> <% request.setCharacterEncoding("utf-8");%> </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> <!-- seven08.jsp --> </head> <body> <form action="seven09.jsp" method="post" name="form"> 输入任意整数N：<input type="text" name="name" > <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> <!-- seven09.jsp --> </head> <body> <% request.setCharacterEncoding("UTF-8"); String name=request.getParameter("name"); int n=Integer.parseInt(name); for(int i=0;i<n;i++){ out.print("欢迎"+"<br>"); } %> </body> </html>
六、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>
