JSP第七周作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <% double price=98.78; %> 商品编号A1001，价格8765 <a href="example4_9_receive.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002，价格<%=price %> <a href="example4_9_receive.jsp?id=A1002&price=<%=price %>">购买</a><br> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> </head> <body> <% String id=request.getParameter("id"); String price=request.getParameter("price"); %> <b>商品编号：<%= id %></b> 商品价格：<%= price %> </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>
<form action="computer.jsp">
输入运算数，选择运算符号：<br> <input type="text" name="numberone"> <select
name="operator">
<option selected="selected" value="+">+
<option value="-">-
<option value="*">*
<option value="/">/
</select> <input type="text" name="numbertwo"><br> <input
type="submit" name="submit" value="提交"><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>
</head>
<body>
<%
String numberone = request.getParameter("numberone");
String numbertwo = request.getParameter("numbertwo");
String operator = request.getParameter("operator");
if (numberone == null || numberone.length() == 0) {
response.sendRedirect("ccc.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>
<body>
<script type="text/javascript">
function validate() {
if (loginForm.account.value == "") {
alert("账号不能为空！");
return;
} else if (loginForm.password.value == "") {
alert("密码不能为空！");
return;
}
loginForm.submit();
}
</script>
<form action="fff.jsp" >
用 户 名: <input type="text" name="uname"><br>
密       码: <input type="password" name="upwd"><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> <% request.setCharacterEncoding("utf-8"); String uname=request.getParameter("uname"); String upwd=request.getParameter("upwd"); if(uname.equals(upwd)){ request.getRequestDispatcher("ok.jsp").forward(request,response); } else{ response.sendRedirect("no.jsp"); } %> </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"%>
<html>
<head>
</head>
<body>
<script type="text/javascript">
function validate() {
if (loginForm.account.value == "") {
alert("账号不能为空！");
return;
} else if (loginForm.password.value == "") {
alert("密码不能为空！");
return;
}
loginForm.submit();
}
</script>
<form action="index.jsp" name="loginForm" method="post">
<p style="font-family: 宋体;font-size: 18; color:blue">
输入账号：<input name="account" type="text" /><br>
输入密码:<input name="password" type="password" /><br>
是否注册会员：
<input type="checkbox" name="yes" value="1"/>注册
<input type="checkbox" name="yes" value="2"/>不注册<br>
<input type="button" value="登录"onClick="validate()">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<h1>登录成功</h1>
<%
String []yes=request.getParameterValues("yes");
for(int i=0;i<yes.length;i++){
if(yes[i].equals("1")){
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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<form action="huanying.jsp">
请输入一个数字 <input type="text" name="num"><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>
<%
request.setCharacterEncoding("utf-8");
String num = request.getParameter("num");
double n = Double.parseDouble(num);
for (int i = 0; i < n; i++) {
out.println("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。
%> <html> <head> <title></title> </head> <body> <% String id=request.getParameter("id"); String password=request.getParameter("password"); if(id.equals(password)){ request.getRequestDispatcher("work06link01.jsp").forward(request, response); }else{ out.print("登陆失败"); } %> </body> </html>
%>
<html>
<head>
<title></title>
</head>
<%String src=request.getParameter("id"); %>
<body>
登陆成功<br>
<form action="work06link02.jsp">
用户姓名<input type="text" name="name"/><br>
<input type="submit" value="提交"/>
<input type="hidden" name="src" value="<%= src %>"/>
</form>
</body>
</html>
%>
<html>
<head>
<title></title>
</head>
<%String src=request.getParameter("src");
String name=request.getParameter("name");
%>
<body>
账号：<%=src %><br>
密码：<%=name %>
</body>
</html>
%> <html> <head> <title></title> </head> <body> <form action="work06link00.jsp"> <input type="text" name="id" value="admin"/> <input type="password" name="password" value="admin"/> <input type="submit" value="登录"/> </form> </body> </html>
