一 用表达式和脚本方式实现九九乘法表
<%@
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 'exercise.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
{
for
(
int
i=1;i<=9;i++)
{
for
(
int
j=1;j<=i;j++)
{
out.println(i+
"*"
+j+
"="
+(i*j)+
" "
);
}
out.println(
"<br>"
);
//追加换行标签
}
}
%>
<
h1
>
九九乘法表
</
h1
>
<
hr
>
<%=
printMultiTable1()
%>
<
br
>
<%
printMultiTable2(out);
%>
<
br
>
</
body
>
</
html
>
二 运行效果
三 小知识点
1、pageEncoding是jsp文件本身的编码。
2、contentType的charset是服务器发给客户端时的内容编码。