我有扁平的 xml 结构,我需要转换成层次结构。在stackoverflow的帮助下,我能够做到。问题:是否可以使用相同的平面结构只显示一个分支?
这是我的 xml 和 xsl 文件:
XML
<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="Stack.xsl"?>
<Items>
<Item>
<Id>1</Id>
<ParentId>0</ParentId>
<Name>1</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>2</Id>
<ParentId>1</ParentId>
<Name>1.1</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>3</Id>
<ParentId>1</ParentId>
<Name>1.2</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>4</Id>
<ParentId>1</ParentId>
<Name>1.3</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>5</Id>
<ParentId>1</ParentId>
<Name>1.4</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>6</Id>
<ParentId>0</ParentId>
<Name>2</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>7</Id>
<ParentId>6</ParentId>
<Name>2.1</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>8</Id>
<ParentId>6</ParentId>
<Name>2.2</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>9</Id>
<ParentId>0</ParentId>
<Name>3</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>10</Id>
<ParentId>3</ParentId>
<Name>1.2.1</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>11</Id>
<ParentId>8</ParentId>
<Name>2.2.1</Name>
<SortOrder>0</SortOrder>
</Item>
<Item>
<Id>11</Id>
<ParentId>5</ParentId>
<Name>1.4.1</Name>
<SortOrder>0</SortOrder>
</Item>
</Items>
XSL
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns="http://www.w3.org/1999/xhtml">
<xsl:param name="SelectedId" select="'10'"/>
<xsl:key name="ChildNodes" match="/Items/Item" use="ParentId"/>
<xsl:template match="Items">
<ul>
<xsl:apply-templates select="Item[ParentId = 0]" />
</ul>
</xsl:template>
<xsl:template match="Item">
<li>
<xsl:choose>
<xsl:when test="Id = $SelectedId">
<b><xsl:value-of select="Name" /></b>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="Name" />
</xsl:otherwise>
</xsl:choose>
<xsl:variable name="Descendants" select="key ('ChildNodes', Id)" />
<xsl:if test="count ($Descendants) > 0">
<ul>
<xsl:apply-templates select="$Descendants" />
</ul>
</xsl:if>
</li>
</xsl:template>
</xsl:stylesheet>
我目前的输出:
1
1.1
1.2
1.2.1
1.3
1.4
1.4.1
2
2.1
2.2
2.2.1
3
理想的结果示例:
1
1.1
1.2
1.2.1
1.3
1.4
2
3