1.
<%@ page contentType="text/html" %>
<%@ page pageEncoding="utf-8"%>
<%@ page import="java.util.regex.Pattern"%>
<%@ page import="java.util.regex.Matcher"%>
<%!
public double getPriceSum(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;
}
%>
<html>
<body bgcolor = cyan>
<P style="font-family:黑体;font-size:20">
<br>张三的菜单:</br>
<% String str="麻辣豆腐：20.6元，红烧肉：68.9元";
%>
<br><%=str%></br>
<br><b><i>消费总和：<%=getPriceSum(str) %></i></b></br>
<br>李四的菜单:</br>
<% str="剁椒鱼头：62.9元，烤鸭：199元，红焖大虾：289.9元";
%>
<br><%=str%></br>
<br><b><i>消费总和：<%=getPriceSum(str) %></i></b></br>
</P>
</body>
</html>
2
<%@ page contentType="text/html" %> <%@ page pageEncoding="utf-8"%> <%@ page import="java.time.LocalDate" %> <%@ page import="java.time.LocalTime" %> <% LocalDate date=LocalDate.now(); LocalTime time=LocalTime.now(); %> <h2> 用户在<%=date.getYear()%>/<%=date.getMonthValue()%>/ <%=date.getDayOfMonth()%><br> <%=time.getHour()%>:<%=time.getMinute()%>:<%=time.getSecond()%>访问了网页。 </h2>
<%@ page contentType="text/html" %> <%@ page pageEncoding="utf-8"%> <html> <body> <h1>显示访问网页的日期，时间</h1> <%@ include file="index1.jsp"%> </body> </html>
3
<%@ page contentType="text/html" %>
<%@ page pageEncoding="utf-8" %>
<html>
<body bgcolor=cyan>
<br>英文课文(English Text):</br>
<p style="font-family: 宋体;font-size: 18;color: black;">
<jsp:include page="english/english.txt" />
<br>课文音频(English Audio):</br>
<jsp:include page="audio.jsp" />
</p>
</body>
</html>
<%@ page contentType="text/html" %>
<%@ page pageEncoding="utf-8" %>
<html>
<body bgcolor=pink>
<embed src="english/english.mp3" autostart=false>
课文音频
</embed>
</body>
</html>
