7
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body bgcolor=#9370DB >
<%double price=98.78; %>
<p style="font-family:宋体;font-size:36;color:Thistle">
商品编号A1001，价格8765
<a href="two.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002，价格<%=price %>
<a href="two.jsp?id=A1002&price=<%=price %>">购买</a>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'two.jsp' starting page</title>
</head>
<body bgcolor=#FFB6C1>
<p style="font-family:宋体;font-size:36;color:blue">
<%
String id=request.getParameter("id");
String price=request.getParameter("price");
%>
<b>商品编号：<%=id %></b><br>
商品价格：<%=price %>
</p>
</body>
</html>
2.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>p79实验2计算器</title>
</head>
<body>
<form action="three.jsp" method="post">
输入运算数，选择运算符号<br>
<br> <input type="text" name="d1" value="4">
<select name="fu">
<option>+</option>
<option>-</option>
<option>*</option>
<option>/</option>
</select> <input type="text" name="d2" value="23"><br>
<br> <input type="submit" name="ti" 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>计算器</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String d1 = request.getParameter("d1");
String d2 = request.getParameter("d2");
String fu = request.getParameter("fu");
if (d1 == null || d1.length() == 0) {
response.sendRedirect("index.jsp");
return;
} else if (d2 == null || d2.length() == 0) {
response.sendRedirect("index.jsp");
return;
}
try {
double a = Double.parseDouble(d1);
double b = Double.parseDouble(d2);
double r = 0;
if (fu.equals("+"))
r = a + b;
else if (fu.equals("-"))
r = a - b;
else if (fu.equals("*"))
r = a * b;
else if (fu.equals("/"))
r = a / b;
out.print(a + "" + fu + "" + b + "=" + r);
} catch (Exception e) {
out.println("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）
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>
<title>登录表单</title>
</head>
<body>
<form action="four.jsp" method="post" name="form1">
账号：<input type="text" name="name"><br>
<br> 密码：<input type="password" name="password"><br>
<br><input type="checkbox" name="vip" value="欢迎您注册为会员">是否注册为会员<br>
<br> <input type="button" name="ti" value="提交" onclick="fu()">
</form>
<script type="text/javascript">
function fu() {
if (form1.name.value == "") {
alert("账号不能为空");
return;
}
if (form1.password.value == "") {
alert("密码不能为空");
return;
}
form1.submit();
}
</script>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>第3题</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String name = request.getParameter("name");
String password = request.getParameter("password");
String[] vip = request.getParameterValues("vip");
if (name.equals(password)) {
out.println("登录成功"+"<br>");
if(vip!=null){
out.println("欢迎注册为会员");
}
} else {
out.println("登录失败");
}
%>
</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>
<title>欢迎</title>
</head>
<body>
<form action="five.jsp" method="post">
请输入一个数字：<br>
<br> <input type="text" name="shu"><br>
<br> <input type="submit" name="ti" 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>欢迎</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String shu = request.getParameter("shu");
double a = Double.parseDouble(shu);
for(int i=0;i<a;i++){
out.println("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.Enumeration"
pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>6</title>
</head>
<body>
<form action="one6-1.jsp" method="post">
账号：<input type="text" name="name1" /><br>
<br> 密码：<input type="password" name="password" /><br>
<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>
<title>第6题</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String name1=request.getParameter("name1");
String password=request.getParameter("password");
if(name1.equals(password)){
request.getRequestDispatcher("two6-1.jsp").forward(request, response);
}
else{
request.getRequestDispatcher("one6-2.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> <title>第6题</title> </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>
<title>第6题</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String name1 = request.getParameter("name1");
%>
<form action="two6-2.jsp" method="post">
用户姓名：<input type="text" name="name2"><br>
<br> <input type="submit" value="提交"><br>
<br> <input type="hidden" name="name1" value="<%= name1 %>" />
</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>第6题</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String name1 = request.getParameter("name1");
String name2 = request.getParameter("name2");
out.print("账号：" + name1 + "</br>" + "用户姓名:" + name2);
%>
</body>
</html>
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