jsp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>
<% double price=98.78; %>
商品编号 A1001，价格8765
<a href="bbb.jsp?id=A1002&price=<%=price %>">购买</a><br>
商品编号 A1002，价格 <%=price %>
<a href="bbb.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">
<html>
<head>
</head>
<body>
<%
String id=request.getParameter("id");
String price=request.getParameter("price"); %>
商品编号：<%=id %><br>
商品价格：<%=price %><br>
</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>
<body>
登录
<br />
<form action="zhuanfa.jsp" name="myform" method="post">
用户名：<input type="text" name="uname"><br />
密码：<input type="password" name="upwd"><br />
<input type="submit" value="登录">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String name = request.getParameter("uname");
String pwd = request.getParameter("upwd");
if (name.equals("xx
") && pwd.equals("123"))
request.getRequestDispatcher("ok.jsp").forward(request,
response);
else
request.getRequestDispatcher("no.jsp").forward(request,
response);
%>
成功
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <h1 style="color: red">登录成功</h1> </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>
登录
<br />
<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="huiyuan.jsp">
用 户 名: <input type="text" name="uname"><br>
密 码: <input type="password" name="upwd"><br>
<input type="checkbox" name="check">
注册会员 <input type="checkbox" name="nocheck">
跳过 <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");
String check = request.getParameter("check");
String nocheck = request.getParameter("check");
if (uname.equals(upwd)) {
out.println("登陆成功");
if (check.equals("on"))
out.print("欢迎您注册会员");
else if (nocheck.equals("on"))
out.print("欢迎使用");
} else {
out.println("登陆失败");
}
%>
</body>
</html>
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
<%@ 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
<br/>
<script>
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="chenggong.jsp">
账号: <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("tiaozhuan.jsp").forward(request,response);
} else {
response.sendRedirect("no.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>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
%><br>
<form action="xianshi.jsp">
用 户 名: <input type="text" name="name"><br>
<input type="submit" value="提交">
<input name="uname" type="hidden"value="<%=uname%>">
</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 name = request.getParameter("name");
out.print("账号是" + uname + ",密码是" + name);
out.print(name);
%>
</body>
</html>
