我正在使用DNN Done Right菜单组件为DotNetNuke 5开发一个皮肤，该组件使用自定义XSL-T将XML站点地图转换为HTML导航。
与构建导航菜单的其他方式相比，使用XSL-T可以节省生命。但是，由于我是XML-T和XPath的新手，因此我遇到了一些更复杂的问题。
我想要实现的目标是：
下面是菜单组件使用的站点地图的示例XML块。
<Root>
<root>
<node id="37" text="Home" url="http://www.dnndoneright.com/Home.T37.aspx" enabled="1" selected="0" breadcrumb="0" first="1" last="0" only="0" depth="0" >
<description >Upgrade your standard DNN menu - automatically and for free - to an SEO-optimised, accessible, mobile-friendly, cross-browser menu.</description>
</node>
<node id="56" text="DNN Menu" url="http://www.dnndoneright.com/DNN-Menu.T56.aspx" enabled="1" selected="0" breadcrumb="1" first="0" last="0" only="0" depth="0" >
<node id="97" text="Menu features" url="http://www.dnndoneright.com/Menu-features.T97.aspx" enabled="1" selected="0" breadcrumb="0" first="1" last="0" only="0" depth="1" />
<node id="111" text="Pre-built templates" url="http://www.dnndoneright.com/Pre-built-templates.T111.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="1" >
<node id="94" text="Standard DNN menu, upgraded" url="http://www.dnndoneright.com/Standard-DNN-menu-upgraded.T94.aspx" enabled="1" selected="0" breadcrumb="0" first="1" last="0" only="0" depth="2" />
<node id="124" text="Superfish template" url="http://www.dnndoneright.com/Superfish-template.T124.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="106" text="Treeview template" url="http://www.dnndoneright.com/Treeview-template.T106.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="107" text="Accordion template" url="http://www.dnndoneright.com/Accordion-template.T107.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="112" text="Dropdown template" url="http://www.dnndoneright.com/Dropdown-template.T112.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="96" text="Mega-menu" url="http://www.dnndoneright.com/Mega-menu.T96.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="1" only="0" depth="2" />
</node>
<node id="113" text="Getting started" url="http://www.dnndoneright.com/Getting-started.T113.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="1" >
<node id="114" text="Installing the menu" url="http://www.dnndoneright.com/Installing-the-menu.T114.aspx" enabled="1" selected="0" breadcrumb="0" first="1" last="0" only="0" depth="2" />
<node id="115" text="Upgrading a SolPart menu" url="http://www.dnndoneright.com/Upgrading-a-SolPart-menu.T115.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="116" text="Upgrading a DNNMenu" url="http://www.dnndoneright.com/Upgrading-a-DNNMenu.T116.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="117" text="Installing a template" url="http://www.dnndoneright.com/Installing-a-template.T117.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="118" text="Adding to a skin" url="http://www.dnndoneright.com/Adding-to-a-skin.T118.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="1" only="0" depth="2" />
</node>
<node id="119" text="Customising templates" url="http://www.dnndoneright.com/Customising-templates.T119.aspx" enabled="0" selected="0" breadcrumb="1" first="0" last="1" only="0" depth="1" >
<node id="120" text="Standard options" url="http://www.dnndoneright.com/Standard-options.T120.aspx" enabled="1" selected="0" breadcrumb="0" first="1" last="0" only="0" depth="2" />
<node id="121" text="Specifying filenames" url="http://www.dnndoneright.com/Specifying-filenames.T121.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="2" />
<node id="122" text="XML format" url="http://www.dnndoneright.com/XML-format.T122.aspx" enabled="1" selected="1" breadcrumb="1" first="0" last="0" only="0" depth="2" />
<node id="123" text="Creating custom templates" url="http://www.dnndoneright.com/Creating-custom-templates.T123.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="1" only="0" depth="2" />
</node>
</node>
<node id="87" text="Download" url="http://www.dnndoneright.com/Download.T87.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="0" only="0" depth="0" />
<node id="85" text="Contact" url="http://www.dnndoneright.com/Contact.T85.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="1" only="0" depth="0" >
<node id="129" text="Blog" url="http://www.dnndoneright.com/Blog.T129.aspx" enabled="1" selected="0" breadcrumb="0" first="1" last="0" only="0" depth="1" />
<node id="130" text="Forum" url="http://www.dnndoneright.com/Forum.T130.aspx" enabled="1" selected="0" breadcrumb="0" first="0" last="1" only="0" depth="1" />
</node>
</root>
</Root>
这也是我（不正确）的起点，只是为了揭示我缺乏XSL / XPath知识。 （我的代码错了，因为它列出了所有L1节点，而不仅仅是所选层次结构中的L1节点）
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" />
<xsl:template match="/">
<div class="SideMenu">
<!-- Loop through all L1 nodes -->
<xsl:for-each select="Root/root/node/node">
<xsl:if test="@enabled='1'" >
<!-- Only use L1 in the current hierarchy -->
<div>
[ <xsl:value-of select="@text"/>: <xsl:value-of select="@depth"/> ]
</div>
</xsl:if>
</xsl:for-each>
</div>
</xsl:template>
</xsl:stylesheet>
答案 0 :(得分：1)
以下假设输入中只能有一个选定的节点：
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>
<xsl:template match="/">
<div class="SideMenu">
<!-- select all the siblings of the selected node -->
<xsl:apply-templates select="//node[@selected=1]/../node" />
</div>
</xsl:template>
<!-- nodes are turned into a <div> with some descriptive text -->
<xsl:template match="node">
<div>
<xsl:value-of select="concat('[ ', @text, ': ', ' ]')" />
</div>
</xsl:template>
</xsl:stylesheet>
示例XML的输出：
<div class="SideMenu">
<div>[ Standard options: ]</div>
<div>[ Specifying filenames: ]</div>
<div>[ XML format: ]</div>
<div>[ Creating custom templates: ]</div>
</div>
很容易创建嵌套菜单，但不可否认，我不确定你想要什么。如果您发布所需的输出，我可以看到它。
答案 1 :(得分：0)
如果您可以发布您希望看到的实际输出，那么它会有所帮助，但我想您可能需要这样的东西：
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="root">
<div class="SideMenu">
<!-- Loop through level 1 nodes -->
<xsl:apply-templates select="//node[@depth=1]" mode="general" />
</div>
</xsl:template>
<xsl:template match="node" mode="general">
<xsl:choose>
<!-- If the currently selected node, show all siblings -->
<xsl:when test="@selected=1">
<xsl:apply-templates select="../node" mode="only" />
</xsl:when>
<!-- Otherwise show just this node -->
<xsl:otherwise>
<xsl:apply-templates select="." mode="only" />
</xsl:otherwise>
</xsl:choose>
<!-- Follow the breadcrumb down towards the currently selected node -->
<xsl:apply-templates select="node[@breadcrumb=1]" mode="general" />
</xsl:template>
<xsl:template match="node" mode="only">
<div>
[ <xsl:value-of select="@text"/>: <xsl:value-of select="@depth"/> ]
</div>
</xsl:template>
</xsl:stylesheet>
如果这不能满足您的需求，请随时在DNNDoneRight论坛上提问，这就是他们的目的！
答案 2 :(得分：0)
感谢您的回复。不幸的是，你的代码并不是我所需要的（很可能是由于我所追求的复杂性以及我无法解释我的要求） - 但是由于你的示例代码，我对XSL有了更深入的了解 - T并创建了以下内容：
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" />
<xsl:template match="/">
<div class="SideMenu">
<!-- Loop through all L1 nodes -->
<xsl:for-each select="Root/root/node">
<xsl:if test="@enabled='1'" >
<xsl:if test="@breadcrumb='1'" >
<!-- Find active root node-->
<!-- L0 nodes: Don't ever show (These are the horizontal tabs) -->
<!-- Always show all children: L1 nodes -->
<xsl:apply-templates select="child::node()[@url]" mode="BaseNode" ></xsl:apply-templates>
</xsl:if>
</xsl:if>
</xsl:for-each>
</div>
</xsl:template>
<!-- Template: Base node -->
<xsl:template match="node" mode="BaseNode" >
<xsl:choose>
<xsl:when test="@breadcrumb='0'" >
<!-- Non-breadcrumb L1 node -->
<xsl:apply-templates select="." mode="NonShadedNode" ></xsl:apply-templates>
</xsl:when>
<xsl:when test="@breadcrumb='1'" >
<!-- Child which is part of hierarchy -->
<xsl:apply-templates select="." mode="ShadedNode" ></xsl:apply-templates>
<!-- Drill down through hierarchy of active nodes-->
<xsl:for-each select="descendant::node()[@url]">
<xsl:if test="@breadcrumb='1'" >
<!-- Is this the last node? If so, show children -->
<xsl:choose>
<xsl:when test="child::node()[@url]">
<!-- Not last node -->
<xsl:apply-templates select="." mode="ShadedNode" ></xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<!-- Last node: loop through all siblings -->
<!-- THIS LOOP DOESN'T WORK CORRECTLY -->
<xsl:for-each select="preceding-sibling::node()" >
<xsl:apply-templates select="." mode="ShadedNode" ></xsl:apply-templates>
</xsl:for-each>
<xsl:apply-templates select="." mode="SelectedNode" ></xsl:apply-templates>
<xsl:for-each select="following-sibling::node()" >
<xsl:apply-templates select="." mode="ShadedNode" ></xsl:apply-templates>
</xsl:for-each>
</xsl:otherwise>
</xsl:choose>
</xsl:if>
</xsl:for-each>
</xsl:when>
</xsl:choose>
</xsl:template>
<!-- Template: Non-shaded node -->
<xsl:template match="node" mode="NonShadedNode" >
<a>
<xsl:attribute name="href">
<xsl:value-of select="@url"/>
</xsl:attribute>
<xsl:attribute name="style">
padding-left:<xsl:value-of select="@depth * 10"/>
</xsl:attribute>
<xsl:value-of select="@text"/>
</a>
</xsl:template>
<!-- Template: Shaded node -->
<xsl:template match="node" mode="ShadedNode" >
<a class="SideMenu_Shaded">
<xsl:attribute name="href">
<xsl:value-of select="@url"/>
</xsl:attribute>
<xsl:attribute name="style">
padding-left:<xsl:value-of select="@depth * 10"/>
</xsl:attribute>
<xsl:value-of select="@text"/>
</a>
</xsl:template>
<!-- Template: Selected node -->
<xsl:template match="node" mode="SelectedNode" >
<a class="SideMenu_Selected">
<xsl:attribute name="style">
padding-left:<xsl:value-of select="@depth * 10"/>
</xsl:attribute>
<xsl:value-of select="@text"/>
</a>
</xsl:template>
</xsl:stylesheet>
这正是我所需要的，除了这不正确部分，由于某种原因也显示了兄弟姐妹的节点......我正在看这个并且希望它是我代码中的一个小错误。
虽然如果你能发现问题，请告诉我！ ：）
以下是来自XSL-T的呈现HTML：
<div class="SideMenu"><a href="/Home/Tester.aspx" style="
 padding-left:10">Tester </a><a class="SideMenu_Shaded" href="/Home/ChiefConstablesArea.aspx" style="
 padding-left:10">Chief Constables Area</a>
Chief Constables Area
Chief Constables Area
<a class="SideMenu_Shaded" href="/Home/ChiefConstablesArea/ChiefsFocusGroups.aspx" style="
 padding-left:20">Chief's Focus Groups</a>
<a class="SideMenu_Shaded" href="/Home/ChiefConstablesArea/AbouttheChief.aspx" style="
 padding-left:20">About the Chief</a>
<a class="SideMenu_Shaded" href="/Home/ChiefConstablesArea/ChiefsOfficerGroup.aspx" style="
 padding-left:20">Chief's Officer Group</a>
<a class="SideMenu_Selected" style="
 padding-left:20">Chief's Messages</a>
<a class="SideMenu_Shaded" href="/Home/ChiefConstablesArea/ForceAwardsScheme.aspx" style="
 padding-left:20">Force Awards Scheme</a>
<a href="/Home/ActiveForumLitetrial.aspx" style="
 padding-left:10">Active Forum Lite trial</a></div>