SiteMesh2-sitemesh.xml的ParameterDecoratorMapper映射器的用法

時間 2019-11-17

標籤 sitemesh2 sitemesh sitemesh.xml xml parameterdecoratormapper 映射用法欄目 XML 简体版

原文原文鏈接

繼續使用上一章http://www.cnblogs.com/EasonJim/p/7086916.html的例子，改形成使用ParameterDecoratorMapper映射器的方法，這個映射器不須要經過匹配URL和在頁面上寫模板路徑去實現，只須要經過URL上傳入指定參數便可。html

修改配置以下：java

一、sitemesh.xml引入ParameterDecoratorMapper映射器git

<sitemesh>
    <property name="decorators-file" value="/WEB-INF/decorators.xml"/>
    <excludes file="${decorators-file}"/>

    <page-parsers>
        <parser content-type="text/html" class="com.opensymphony.module.sitemesh.parser.HTMLPageParser" />
    </page-parsers>
    <decorator-mappers>
        <mapper class="com.opensymphony.module.sitemesh.mapper.PageDecoratorMapper">
            <param name="property.1" value="meta.decorator" />
            <param name="property.2" value="decorator" />
            <!-- 注意這一行指定<meta/>標籤的 name 屬性做爲PageDecorator的識別符號 -->
            <param name="property.3" value="meta.theme" />
        </mapper>
        <mapper class="com.opensymphony.module.sitemesh.mapper.ParameterDecoratorMapper"/>
        <mapper class="com.opensymphony.module.sitemesh.mapper.FrameSetDecoratorMapper"/>
        <mapper class="com.opensymphony.module.sitemesh.mapper.PrintableDecoratorMapper">
            <param name="decorator" value="printable" />
            <param name="parameter.name" value="printable" />
            <param name="parameter.value" value="true" />
        </mapper>
        <mapper class="com.opensymphony.module.sitemesh.mapper.FileDecoratorMapper"/>
        <mapper class="com.opensymphony.module.sitemesh.mapper.ConfigDecoratorMapper">
            <param name="config" value="${decorators-file}" />
        </mapper>
    </decorator-mappers>
</sitemesh>

二、新建test2.jsp頁面，這個頁面無需寫任何模板github

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title></title>
</head>
<body>
    <h1>Test2</h1>
</body>
</html>

三、訪問URL變成http://localhost:8080/test1/test2.jsp?decorator=basic-themeweb

而若是URL沒有參數，那麼會變成原始頁面api

四、爲URL後面的參數指定自定義的參數名，修改sitemesh.xml中映射器的寫法app

        <mapper class="com.opensymphony.module.sitemesh.mapper.ParameterDecoratorMapper">
            <param name="decorator.parameter" value="theme"/>
        </mapper>

訪問URL變成：http://localhost:8080/test1/test2.jsp?theme=basic-themejsp

        <mapper class="com.opensymphony.module.sitemesh.mapper.ParameterDecoratorMapper">
            <param name="decorator.parameter" value="theme"/>
            <param name="parameter.name" value="confirm"/> <param name="parameter.value" value="true"/>
        </mapper>

增長了兩個參數，那麼訪問將變成訪問URI時：test2.jsp?theme=basic-theme&confirm=true將映射裝飾器basic-theme。那裏的URI是test2.jsp?theme=basic-theme和test2.jsp?theme=basic-theme&confirm=false不會返回任何裝飾器。測試

也就是說在訪問時增長確認參數。ui

測試工程：https://github.com/easonjim/5_java_example/tree/master/sitemesh/test3

參考：

https://web.archive.org/web/20071008181341fw_/http://www.opensymphony.com/sitemesh/api/com/opensymphony/module/sitemesh/mapper/ParameterDecoratorMapper.html