返回 node-set 参数中按文档顺序处于第一位的节点的扩展名称的命名空间统一资源标识符 (URI)。
string namespace-uri(node-set?)
备注
如果 node-set 参数为空,第一个节点没有扩展名称或扩展名称的命名空间 URI 为 Null,并返回一个空字符串。 如果省略了该参数,默认的节点集中唯一的成员是上下文节点。
备注
除了元素节点和属性节点之外,返回的字符串将为空字符串。
示例
XML 文件 (data.xml)
<?xml-stylesheet type="text/xsl" href="sample.xsl"?>
<b:catalog xmlns:b="x-schema:book-schema.xml">
<b:book id="bk101">
<b:author>Gambardella, Matthew</b:author>
<b:title>XML Developer's Guide</b:title>
<b:genre>Computer</b:genre>
<b:price>44.95</b:price>
<b:publish_date>2000-10-01</b:publish_date>
<b:description>An in-depth look at creating applications with XML.</b:description>
</b:book>
<b:book id="bk102">
<b:author>Ralls, Kim</b:author>
<b:title>Midnight Rain</b:title>
<b:genre>Fantasy</b:genre>
<b:price>5.95</b:price>
<b:publish_date>2000-12-16</b:publish_date>
<b:description>A former architect battles corporate zombies, an evil sorceress, and her own childhood to become queen of the world.</b:description>
</b:book>
</b:catalog>
XSLT 文件 (sample.xsl)
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>
<xsl:template match="/">
<html>
<body>
<h3>namespace-uri() Function</h3>
<table width="100%" border="1">
<tr>
<td width="25%"><b>namespace-uri()</b></td>
<td width="25%"><b>name()</b></td>
<td width="25%"><b>local-name</b></td>
<td width="25%"><b>text()</b></td>
</tr>
<xsl:apply-templates />
</table>
</body>
</html>
</xsl:template>
<xsl:template match="*">
<tr>
<td>
<xsl:value-of select="namespace-uri()"/>
</td>
<td>
<xsl:value-of select="name()"/>
</td>
<td>
<xsl:value-of select="local-name()"/>
</td>
<td>
<xsl:value-of select="text()"/>
</td>
</tr>
<xsl:apply-templates select="*"/>
</xsl:template>
</xsl:stylesheet>
辅助 XSLT 文件 (book-schema.xml)
<Schema name="books" xmlns="urn:schemas-microsoft-com:xml-data"
xmlns:dt="urn:schemas-microsoft-com:datatypes">
<ElementType name="author"/>
<ElementType name="title"/>
<ElementType name="genre"/>
<ElementType name="price"/>
<ElementType name="publish_date"/>
<ElementType name="description"/>
<AttributeType name="id" dt:type="id"/>
<ElementType name="catalog">
<element type="book"/>
</ElementType>
<ElementType name="book" model="closed" content="eltOnly">
<attribute type="id"/>
<element type="author"/>
<element type="title"/>
<element type="genre"/>
<element type="price"/>
<element type="publish_date"/>
<element type="description"/>
</ElementType>
</Schema>
格式化输出
处理器输出
<html>
<body>
<h3>namespace-uri() Function</h3>
<table width="100%" border="1">
<tr>
<td width="25%"><b>namespace-uri()</b></td>
<td width="25%"><b>name()</b></td>
<td width="25%"><b>local-name</b></td>
<td width="25%"><b>text()</b></td>
</tr>
<tr>
<td>x-schema:book-schema.xml</td>
<td>b:catalog</td>
<td>catalog</td>
<td></td>
</tr>
...
<tr>
<td>x-schema:book-schema.xml</td>
<td>b:author</td>
<td>author</td>
<td>Gambardella, Matthew</td>
</tr>
...
</table>
</body>
</html>