##index.jsp:
<%@ 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 page</title>
</head>
<body>
<div>9 x 9 cheng shu </div> <br>
<%int m=0; %>
<%int n=0; %>
<%for (m=1;m<10;m++ ){%>
<%for (n=1;n<=m;n++) {%>
<%String s=m+"*"+n+"="+(m*n)+"   "; %>
<%=s %>
<% } %>
<%String nr="<br>"; %>
<%=nr %>
<%} %>
</body>
</html>
启动tomcat server，浏览器访问：http://127.0.0.1:8080/工程名/：
1*1=1
2*1=2 2*2=4
3*1=3 3*2=6 3*3=9
4*1=4 4*2=8 4*3=12 4*4=16
5*1=5 5*2=10 5*3=15 5*4=20 5*5=25
6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36
7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49
8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64
9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81