2.81
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.util.regex.Pattern"%>
<%@ page import="java.util.regex.Matcher"%>
<%!public double getPirceSum(String input) {
Pattern pattern;
Matcher matcher;
String regex = "-?[0-9][0-9]*[.]?[0-9]*";
pattern = Pattern.compile(regex);
matcher = pattern.matcher(input);
double sum = 0;
while (matcher.find()) {
String str = matcher.group();
sum += Double.parseDouble(str);
}
return sum;
}%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
张三的菜单
<br>
<%
String str = "麻辣豆腐:20.6元,猪肘子:68.0元";
%>
<%=str%><br>
<b>消费总额:<%=getPirceSum(str)%></b>
</body>
</html>
<%@ page language="java" import="java.util.Date" pageEncoding="utf-8"%>
<%@page contentType="text/html" %>
<%
Date date = new Date();
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<h2>
用户在<%=date.getYear()%>/<%=date.getMonth()+1%>/
<%=date.getDate()%><br>
<%=date.getHours()%>:<%=date.getMinutes()%>:<%=date.getSeconds()%>访问了网页.
</h2>
</body>
</html>
2.82
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.time.LocalDate"%>
<%@ page import="java.time.LocalTime"%>
<%
LocalDate date = LocalDate.now();
LocalTime time = LocalTime.now();
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<h2>
用户在<%=date.getYear()%>/<%=date.getMonthValue()%>/
<%=date.getDayOfMonth()%><br>
<%=time.gettHour()%>:<%=time.gettHour()%>:<%=time.gettHour()%>:<%=time.getSecond()%>访问了网页
</h2>
</body>
</html>
userTime.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<h1>显示访问网页的日期、时间<br>(服务器端的日期、时间)</h1>
<%@ include="index.jsp" %>
</body>
</html>
2.83
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<p>文本内容</p>
<jsp:include page="english/text.txt" />
<br>
<p>音频内容</p>
<jsp:include page="audio.jsp" />
</body>
</html>
audio.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<embed src="english/Jason李小西 - 廻廻奇譚 (Live).mp3" autostart=false>
音频
</body>
</html>