一、jsp之注释
<!-- 在客户端中可见 -->
<%-- 在客户端中不可见 -->
jsp脚本注释：//单行注释 /**/多行注释
二、jsp之声明
<%! %>
三、jsp打印九九乘法表
表达式方式与脚本方式
<%@ page language="java" import="java.util.*" contentType="text/html; charset=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 'jiujiu.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>
<%!
//返回九九乘法表，通过表达式调用，在页面上显示
String printMultiTable(){
String s = "";
for(int i=1;i<=9;i++){
for(int j=1;j<=i;j++){
s+=i+"*"+j+"="+i*j+" ";
}
s+="<br>";
}
return s;
}
//使用脚本方式打印九九乘法表
void printMultiTable2(JspWriter out) throws Exception{
for(int i=1;i<=9;i++){
for(int j=1;j<=i;j++){
out.println(i+"*"+j+"="+(i*j)+" ");
}
out.println("<br>");
}
}
%>
<h1>九九乘法表</h1>
<hr>
<%=printMultiTable() %>
<br>
<% printMultiTable2(out); %>
</body>
</html>