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decorators.xml

2015-08-25 14:12 507 查看
了解装饰器,先来了解下sitemesh

SiteMesh
是一个网页布局和修饰的框架,利用它可以将网页的内容和页面结构分离,以达到页面结构共享的目的,看下百度百科。

这东西就是统一装饰页面的,就像CSDN博客,上面都有统一的工具栏。

怎么用sitemesh呢,全都是配置

 这个写的很详细    http://www.cnblogs.com/luotaoyeah/p/3776879.html

最新版本:3.0.0-SNAPSHOT

① GitHub 地址:https://github.com/sitemesh/sitemesh3

② maven:

1 <dependency>
2   <groupId>org.sitemesh</groupId>
3   <artifactId>sitemesh</artifactId>
4   <version>3.0.0</version>
5 </dependency>


3 . 配置 Sitemesh 3 过滤器

在 web.xml 中添加 Sitemesh Filter: 

1 <web-app>
2
3   ...
4
5   <filter>
6     <filter-name>sitemesh</filter-name>
7     <filter-class>org.sitemesh.config.ConfigurableSiteMeshFilter</filter-class>
8   </filter>
9   <filter-mapping>
10     <filter-name>sitemesh</filter-name>
11     <url-pattern>/*</url-pattern>
12   </filter-mapping>
13
14 </web-app>


4 . 准备两个页面:demo.html 和 decorator.html

① demo.html - “被装饰的页面”,实际要呈现的内容页。

1 <!DOCTYPE html>
2 <html>
3 <head>
4     <title>内容页的标题</title>
5 </head>
6 <body>
7     内容页的body部分
8 </body>
9 </html>


② decorator.html - “装饰页面”,所谓的“母版页”。

1 <!DOCTYPE html>
2 <html>
3 <head>
4 <title>
5     <sitemesh:write property='title' /> - ltcms
6 </title>
7 <sitemesh:write property='head' />
8 </head>
9 <body>
10     <header>header</header>
11     <hr />
12     demo.html的title将被填充到这儿:
13     <sitemesh:write property='title' /><br />
14     demo.html的body将被填充到这儿:
15     <sitemesh:write property='body' />
16     <hr />
17     <footer>footer</footer>
18 </body>
19 </html>


5 . 添加 /WEB-INF/sitemesh3.xml

1 <?xml version="1.0" encoding="UTF-8"?>
2 <sitemesh>
3     <!-- 指明满足“/*”的页面,将被“/WEB-INF/views/decorators/decorator.html”所装饰 -->
4     <mapping path="/*" decorator="/WEB-INF/views/decorators/decorator.html" />
5
6     <!-- 指明满足“/exclude.jsp*”的页面,将被排除,不被装饰 -->
7     <mapping path="/exclude.jsp*" exclue="true" />
8 </sitemesh>


6 . 运行效果

访问 demo.html 页面,实际效果如下:



7 . sitemesh3.xml 配置详解

1 <sitemesh>
2     <!--默认情况下,
3         sitemesh 只对 HTTP 响应头中 Content-Type 为 text/html 的类型进行拦截和装饰,
4         我们可以添加更多的 mime 类型-->
5   <mime-type>text/html</mime-type>
6   <mime-type>application/vnd.wap.xhtml+xml</mime-type>
7   <mime-type>application/xhtml+xml</mime-type>
8   ...
9
10   <!-- 默认装饰器,当下面的路径都不匹配时,启用该装饰器进行装饰 -->
11   <mapping decorator="/default-decorator.html"/>
12
13   <!-- 对不同的路径,启用不同的装饰器 -->
14   <mapping path="/admin/*" decorator="/another-decorator.html"/>
15   <mapping path="/*.special.jsp" decorator="/special-decorator.html"/>
16
17   <!-- 对同一路径,启用多个装饰器 -->
18   <mapping>
19     <path>/articles/*</path>
20     <decorator>/decorators/article.html</decorator>
21     <decorator>/decorators/two-page-layout.html</decorator>
22     <decorator>/decorators/common.html</decorator>
23   </mapping>
24
25   <!-- 排除,不进行装饰的路径 -->
26   <mapping path="/javadoc/*" exclue="true"/>
27   <mapping path="/brochures/*" exclue="true"/>
28
29   <!-- 自定义 tag 规则 -->
30   <content-processor>
31     <tag-rule-bundle class="com.something.CssCompressingBundle" />
32     <tag-rule-bundle class="com.something.LinkRewritingBundle"/>
33   </content-processor>
34   ...
35
36 </sitemesh>


8 . 自定义 tag 规则

Sitemesh 3 默认只提供了 body,title,head 等 tag 类型,我们可以通过实现 TagRuleBundle 扩展自定义的 tag 规则:

1 public class MyTagRuleBundle implements TagRuleBundle {
2     @Override
3     public void install(State defaultState, ContentProperty contentProperty,
4             SiteMeshContext siteMeshContext) {
5         defaultState.addRule("myHeader", new ExportTagToContentRule(contentProperty.getChild("myHeader"), false));
6
7     }
8
9     @Override
10     public void cleanUp(State defaultState, ContentProperty contentProperty,
11             SiteMeshContext siteMeshContext) {
12     }
13 }


最后在 sitemesh3.xml 中配置即可:

1 <content-processor>
2     <tag-rule-bundle class="com.lt.common.ext.sitemesh3.MyTagRuleBundle" />
3 </content-processor>


然后就是关于具体decorators用法了,
<?xml version="1.0" encoding="UTF-8"?>

<decorators defaultdir="/decorators">
    <!--
在excludes元素下指定的页面将不会由SiteMesh来装饰 不配置的话,一些ajax异步,是不能实现的-->
    <excludes>
        <pattern>/exclude.jsp</pattern>
        <pattern>/exclude/*</pattern>
        <pattern>/css/*</pattern>
        <pattern>/js/*</pattern>
        <pattern>/images/*</pattern>
        <pattern>/decorators/*</pattern>
        <pattern>/admin/login.action</pattern>
        <pattern>/index/user/user!regist.action</pattern>
        <pattern>/index/classify/content!choseFolder.action</pattern>
        <pattern>/index/store/folder!choseFolder.action</pattern>
       
       
    </excludes>

    <!--
创建一个名为main的装饰器,该装饰器页面为main.jsp,
        用于装饰pattern指定的URL的所有页面-->
    <decorator
name="admin" page="admin/admin.jsp">
        <pattern>/admin/welcome.action</pattern>
        <pattern>/admin/pubinfo/*</pattern>
        <pattern>/admin/classify/*</pattern>
        <pattern>/admin/user/*</pattern>
        <pattern>/admin/promotion/promotion.action</pattern>
        <pattern>/admin/region/region.action</pattern>
        <pattern>/admin/promotion/promotion.action</pattern>
    </decorator>
   
    <decorator
name="admin-input" page="admin/input.jsp">
        <pattern>/admin/user/*!input.action</pattern>
        <pattern>/admin/classify/classify!input.action</pattern>
        <pattern>/admin/classify/classify!parent.action</pattern>
        <pattern>/admin/classify/classify!clsForm.action</pattern>
        <pattern>/admin/pubinfo/*!input.action</pattern>
        <pattern>/admin/region/region!input.action</pattern>
        <pattern>/admin/promotion/promotion!input.action</pattern>
       
    </decorator>
   
    <decorator
name="index" page="index/index.jsp">
        <!--pattern>/index/classify/index*</pattern-->
        <pattern>/index/index.action</pattern>
    </decorator>
   
    <decorator
name="city" page="index/city.jsp">
        <pattern>/index/area/*</pattern>
    </decorator>
</decorators>
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标签:  java decorator jsp