慕圣948150
2019-09-25 11:23
<%@ page language="java" contentType="text/html; charset=utf-8"
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 'exer.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="Keywordls" content="Keyword1,Keyword2,Keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%!//返回九九乘法表对应的HTML代码.通过表达式来调用,在页面上显示
String printMultiTable1()
{
String s = "";
for(int i=1;i<=9;i++)
{
for(int j=1; j<=i;j++)
{
s+=i+"*"+j+"="+(i*j)+" ";
}
s+="<br>"; //追加换行标签
}
return s;
}
//JSP内置out对象,使用脚本方式调用,打印九九乘法表
void printMultiTable2(JspWriter out) throws Exception
{
String s = "";
for(int i=1;i<=9;i++)
{
for(int j=1; j<=i;j++)
{
s+=i+"*"+j+"="+(i*j)+" ";
}
out.println("<br>"); //追加换行标签
}
}
%>
This is my JSP page.<br>
<h1>九九乘法表</h1>
<hr>
<%=printMultiTable1() %>
<br>
<% printMultiTable2(out); %>
<br>
</body>
</html>
第二个方式表达不出来
一、没有使用out内置对象将主要内容输出
二、内容表达式有误,不应当使用“+=”,应当是“=”
JAVA遇见HTML——JSP篇
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