編譯出來(lái)之后 JSP腳本方式無(wú)表達(dá).
<%@ 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>
<%!//返回九九乘法表對(duì)應(yīng)的HTML代碼.通過(guò)表達(dá)式來(lái)調(diào)用,在頁(yè)面上顯示
? ?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>"; //追加換行標(biāo)簽
}
return s;
? ?}
? ? //JSP內(nèi)置out對(duì)象,使用腳本方式調(diào)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>"); //追加換行標(biāo)簽
}
}
%>
This is my JSP page.<br>
<h1>九九乘法表</h1>
<hr>
<%=printMultiTable1() %>
<br>
<% printMultiTable2(out); %>
<br>
</body>
</html>
第二個(gè)方式表達(dá)不出來(lái)
2019-09-27
一、沒有使用out內(nèi)置對(duì)象將主要內(nèi)容輸出
二、內(nèi)容表達(dá)式有誤，不應(yīng)當(dāng)使用“+=”，應(yīng)當(dāng)是“=”