您的位置:首页 > 其它

mesh-site 例子

2012-09-02 00:00 399 查看

例子1

在{myapp}/WEB-INF/decorators.xml文件中添加以下decorator

<decorator name="mydecorator1" page="mydecorator1.jsp">
<pattern>/test1.jsp</pattern>
</decorator>
在{myapp}/decorators目录下添加mydecorator1.jsp文件,内容如下:

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
<html>
<head>
<title>My Site - <decorator:title default="Welcome!" /></title>
<decorator:head />
</head>
<body>
<decorator:body />
<p>This message is in /decorators/mydecorator1.jsp</p>
</body>
</html>
在{myapp}目录下添加test1.jsp文件,内容如下:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>This is test1</title>
</head>
<body>
<b>This is test1</b>
</body>
</html>

打开浏览器,访问http://localhost:8080/myapp/test1.jsp,将会出现一下内容:

This is test1

This message is in /decorators/mydecorator1.jsp

例子2 (decorator:getProperty tag)

有时候,我们期望修改页面中某个有固定标记的片段,例如我们的jsp中有一个标记<mytag>...</mytag>,此时可以用如下方法实现:

在{myapp}/WEB-INF/decorators.xml文件中添加以下decorator

<decorator name="mydecorator2" page="mydecorator2.jsp">
<pattern>/test2.jsp</pattern>
</decorator>
在{myapp}/decorators目录下添加mydecorator2.jsp文件,内容如下:

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>

<html>
<head>
<title>My Site - <decorator:title default="Welcome!" /></title>
<decorator:head />
</head>

<body>
<decorator:body />

<decorator:getProperty property="page.content1"/>
<decorator:getProperty property="page.content2"/>

<!-- do nothing -->
<decorator:getProperty property="page.content3"/>

<p>This message is in /decorators/mydecorator2.jsp</p>
</body>
</html>
在{myapp}目录下添加test2.jsp文件,内容如下:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>This is test2</title>
</head>

<body>
<b>This is test2</b>
<b>Use <decorator:getProperty> tag</b>

<content tag="content1"><p>This is content1</p></content>
<content tag="content2"><p>This is content2</p></content>
<content tag="content4"><p>This is content4, it shouldn't be display</p></content>
</body>
</html>
打开浏览器,访问http://localhost:8080/myapp/test2.jsp,将会出现一下内容:

This is test2
Use <decorator:getProperty> tag
This is content1
This is content2
This message is in /decorators/mydecorator2.jsp

例子3 (page:applyDecorator tag)

在{myapp}/WEB-INF/decorators.xml文件中添加以下decorator

<decorator name="mydecorator3" page="mydecorator3.jsp">
<pattern>/test3.jsp</pattern>
</decorator>

<decorator name="mydecorator31" page="mydecorator31.jsp">
</decorator>
在{myapp}/decorators目录下添加mydecorator3.jsp文件,内容如下:

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page" %>
<html>
<head>
<title>My Site - <decorator:title default="Welcome!" /></title>
<decorator:head />
</head>

<body>
<decorator:body />

<page:applyDecorator name="mydecorator31">
<content tag="content1"><p>This is content1</p></content>
<content tag="content2"><p>This is content2</p></content>
</page:applyDecorator>
</body>
</html>
在{myapp}/decorators目录下添加mydecorator31.jsp文件,内容如下:

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page" %>

<p><i>begin</i></>
<decorator:getProperty property="page.content1"/>
<decorator:getProperty property="page.content2"/>
<p><i>end</i></>
在{myapp}目录下添加test3.jsp文件,内容如下:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>This is test3</title>
</head>

<body>
<b>This is test3</b>
<b>Use <page:applyDecorator> tag</b>
</body>
</html>
注意:相对于例子2,这里已经没有了<content tag="XXX"/>标签。

打开浏览器,访问http://localhost:8080/myapp/test3.jsp,将会出现一下内容:

This is test3
Use <page:applyDecorator> tag
begin
This is content1
This is content2
end
这里,我在mydecorator3.jsp中应用了mydecorator31.jsp的的decorator,并且将原来在test2.jsp中的 <content />标签复制到mydecorator3.jsp中,此时对于<content tag="xxx"/>的标签将会由mydecorator31.jsp了装饰。

例子4 (page:param tag)

在{myapp}/WEB-INF/decorators.xml文件中添加以下decorator

<decorator name="mydecorator4" page="mydecorator4.jsp">
<pattern>/test4.jsp</pattern>
</decorator>

<decorator name="mydecorator41" page="mydecorator41.jsp">
</decorator>
在{myapp}/decorators目录下添加mydecorator4.jsp文件,内容如下:

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page" %>

<html>
<head>
<title>My Site - <decorator:title default="Welcome!" /></title>
<decorator:head />
</head>

<body>
<decorator:body />
<page:applyDecorator name="mydecorator41" >
<content tag="content1"><p>This is content1</p></content>
<content tag="content2"><p>This is content2</p></content>
<page:param name="page.content1"><p>This content1 has been replaced</p></page:param>
</page:applyDecorator>
</body>
</html>
在{myapp}/decorators目录下添加mydecorator41.jsp文件,内容如下:

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page" %>

<p><i>begin</i></>
<decorator:getProperty property="page.content1"/>
<decorator:getProperty property="page.content2"/>
<p><i>end</i></>
在{myapp}目录下添加test4.jsp文件,内容如下:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>This is test4</title>
</head>

<body>
<b>This is test4</b>
<b>Use <page:param> tag</b>
</body>
</html>
打开浏览器,访问http://localhost:8080/myapp/test4.jsp,将会出现一下内容:

This is test4
Use <page:param> tag
begin
This content1 has been replaced
This is content2
end
这里,我在mydecorator4.jsp中应用了mydecorator41.jsp的的decorator,并且添加了<page:param name="page.content1">标签,那么此时页面上将会用<page:param>标签中的内容替换原来在<decorator:getProperty property="page.content1"/>中的内容,因此页面将不在“This is content1”而显示“This content1 has been replaced”。

SiteMesh的一个重要特性是使用原始HTML的meta标签(例如<meta name="foo" content="bar">)从基础页面传递信息到装饰器。作为一个例子,下面我们使用一个meta标签来定义HTML页面的作者。

<
html
>

< meta name = " author " content = " test@example.com " >

<
head
>

<
title
>
Simple Document
</
title
>

</
head
>

<
body
>

Hello World
!

<
br
/>

<%=

1
+
1

%>

</
body
>

</
html
>

我们定义一个“smart”装饰器来研究meta标签,如果出现这个标签,则可以得到一个相应的HTML:

<%
@ taglib uri
=
"
sitemesh-decorator
"
prefix
=
"
decorator
"

%>

<
decorator:usePage id
=
"
myPage
"

/>

<
html
>

<
head
>

<
title
>

My Site
-

<
decorator:title
default
=
"
Welcome!
"

/>

</
title
>

<
decorator:head
/>

</
head
>

<
body
>

<
h1
><
decorator:title
default
=
"
Welcome!
"

/></
h1
>

<
h3
>

<
a href
=
"
mailto: <decorator:getProperty property=
" meta.author " default= " staff@example.com "
/>
"
>

<
decorator:getProperty property
=
"
meta.author
"

default
=
"
staff@example.com
"

/>

</
a
>

</
h3
>

<
hr
/>

<
decorator:body
/>

<
p
>

<
small
>
(
<
a href
=
"
/?printable=true
"
>
printable version
</
a
>
)
</
small
>

</
p
>

</
body
>

</
html
>

可以看到我们使用了
getProperty标签的 一个默认属性——如果没有指定author,我们就设定其为staff。如果你决定使用这个模型储存页面的meta数据,你或许需要和你的开发伙伴一起来 确定将使用什么标签以及如何使用他们。简单的,你或许想要使用meta标签来描述诸如页面作者及时间戳之类的东西。更复杂一些,你或许会想像XML文件一 样标准化的管理你的站点导航,同时使用meta标签来通过页面节点转到装饰器。
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签:  mesh site