第七周作业
1、教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'demo4.9.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body bgcolor=#ffccff>
<%
double price = 56.56;
%>
<p style="font-family:宋体;font-size:36;color:blue">
商品编号A0132,价格99 <a href="demo4.9receive.jsp?id=A0132&price=56.56">购买</a><br>
商品编号A0133,价格<%=price%>
<a href="demo4.9receive.jsp?id=A0133&price=<%=price%> ">购买</a>
</p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'demo4.9receive.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body bgcolor=#EEEEFF>
<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 %><br>
商品价格：<%= price %>
</p>
<a href="demo4.9.jsp">返回购买页</a>
</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> <!-- seven02.jsp -->
</head>
<body>
<form action="seven03.jsp" method=post name=form>
输入运算数，选择运算符：<br>
<input type=text name="numberOne" size=6 />
<select name="op">
<option selected="selected" value="+">加
<option value="-">减
<option value="*">乘
<option value="/">除
</select>
<input type=text name="numberTwo" size=6/><br>
<input type="submit" name="submit" value="提交"/>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head> <!-- seven03.jsp -->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String numberOne=request.getParameter("numberOne");
String numberTwo=request.getParameter("numberTwo");
String op=request.getParameter("op");
if(numberOne==null||numberOne.length()==0){
response.sendRedirect("second01.jsp");/* 获取方法 */
return;
}
else if(numberTwo==null||numberTwo.length()==0){
response.sendRedirect("second01.jsp");
return;
}
try{
double a=Double.parseDouble(numberOne);
double b=Double.parseDouble(numberTwo);
double r=0;
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.println("请输入数字字符");
}
%>
</body>
</html>
3、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>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<script type="text/javascript">
function validate() {
if (loginForm.uname.value == "") {
alert("账号不能为空!");
return;
}
if (loginForm.upwd.value == "") {
alert("密码不能为空!");
return;
}
loginForm.submit();
}
</script>
<form name="loginForm" action="page02.jsp" method="post">
用户名:<input type="text" name="uname"><br> 密码: <input
type="password" name="upwd"> <br>
<input type="button" value="登录" onClick="validate()">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'page02.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
if (uname.equals(upwd))
request.getRequestDispatcher("page03.jsp").forward(request,
response);
else
request.getRequestDispatcher("page04.jsp").forward(request,
response);
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'page03.jsp' starting page</title>
</head>
<body>
<body bgcolor=#ffccff>
<p>登录成功！</p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'page04.jsp' starting page</title>
</head>
<body bgcolor=#EEEEFF>
<p>登录失败！</p>
</body>
</html>
4、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。
<%
request.setCharacterEncoding("utf-8");
String number = request.getParameter("number");
int a = Integer.parseInt(number);
for (int i = 0; i < a; i++) {
out.print("欢迎" + "<br>");
}
%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'success.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String number = request.getParameter("number");
int a = Integer.parseInt(number);
for (int i = 0; i < a; i++) {
out.print("欢迎" + "<br>");
}
%>
</body>
</html>
5、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"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<script type="text/javascript">
function validate() {
if (loginForm.account.value == "") {
alert("账号不能为空!");
return;
}
if (loginForm.upwd.value == "") {
alert("密码不能为空!");
return;
}
loginForm.submit();
}
</script>
<form name="loginForm" action="page02.jsp" method="post">
账号:<input type="text" name="account"><br> 密码: <input
type="password" name="upwd"> <br> <input type="button"
value="登录" onClick="validate()">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'success.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<p>登录成功！</p>
<%
request.setCharacterEncoding("utf-8");
String account = request.getParameter("account");
%>
<form action="page05.jsp" method="post">
用户名：<input type="text" name="username"><br>
<br> <input type="submit" name="submit" value="提交"> <input
type="hidden" name="account" value="<%=account%>">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'cheng.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body bgcolor=#EEEEFF>
<p>登录失败！</p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'fail.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
if (uname.equals(upwd))
request.getRequestDispatcher("page02.jsp").forward(request,
response);
else
request.getRequestDispatcher("page03.jsp").forward(request,
response);
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'page05.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String account = request.getParameter("account");
String uname = request.getParameter("username");
out.print("账号：" + account + "<br>" + "<br>"+"用户名：" + uname);
%>
</body>
</html>
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