Detailed introduction to example code that uses xml, schema and xslt at the same time

I have never used schema before. This time I hope to add namespace and schema to my xml file, and then use xslt Unexpectedly, it took a lot of effort to convert xslt to html. Now I record the results of normal work, hoping to be of some help to everyone.

First Let's take a look at my xml file. It is intended to be used to define the menu of the web page.

<?xml version="1.0" encoding="GB2312"?>
<menu_items>
<menu_item href="index.html" image="images/A1.gif" name="首页"/>
<menu_item href="ep.html" image="images/A2.gif" name="新闻">
　　　 <menu_item href="ep.html" image="images/A2.gif" name="国内新闻"/>
</menu_item>
</menu_items>

It is a very simple xml file. Put aside the detours, use the Generate Schema function of xmlspy to automatically generate the schema file, and then make some minor modifications. , the result is as follows:

<?xml version="1.0" encoding="GB2312"?>
<xs:schema xmlns="http://www.hz-sp.com/2005/XMLSchema-menu" xmlns:xs=" 
 targetNamespace="http://www.hz-sp.com/2005/XMLSchema-menu">
<xs:element name="menu_item">
　 <xs:complexType>
　 <xs:sequence>
　　 <xs:element ref="menu_item" minOccurs="0"/>
　 </xs:sequence>
　 <xs:attribute name="name" type="xs:string" use="required"/>
　 <xs:attribute name="href" type="xs:anyURI" use="optional"/>
　 <xs:attribute name="image" type="xs:anyURI" use="optional"/>
　 </xs:complexType>
</xs:element>
<xs:element name="menu_items">
　 <xs:complexType>
　 <xs:sequence>
　　 <xs:element ref="menu_item" maxOccurs="unbounded"/>
　 </xs:sequence>
　 </xs:complexType>
</xs:element>
</xs:schema>

Among them, then use the Assign Schema function of xmlspy to specify this xsd in xml. The root node menu_items in xml is:

<menu_items xmlns="http://www.hz-sp.com/2005/XMLSchema-menu" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.hz-sp.com/2005/XMLSchema-menu
menu.xsd">

Next, create the xslt file, the same Only the correct result is given:

<?xml version="1.0" encoding="GB2312"?>
<xsl:stylesheet xpath-default-namespace="http://www.hz-sp.com/2005/XMLSchema-menu" version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" 
 xmlns:fn="http://www.w3.org/2004/07/xpath-functions" xmlns:xdt="http://www.w3.org/2004/07/xpath-datatypes" 
 xmlns="http://www.w3.org/1999/xhtml">>
<xsl:output encoding="GB2312" indent="yes" method="html" version="4.0"/>
<xsl:template match="mm:menu_items" xmlns:mm="http://www.hz-sp.com/2005/XMLSchema-menu">
　 <table width="900" border="0" cellspacing="0" cellpadding="0">
　 <tr>
　　 <xsl:for-each select="mm:menu_item">
　　 <a href="{@href}">
　　　 <img src="{@image}" width="113" height="57" border="0"/>
　　 </a>
　　 </xsl:for-each>
　 </tr>
　 </table>
</xsl:template>
</xsl:stylesheet>

What is annoying is that

xpath-default-namespace="http://www.hz-sp.com/2005/XMLSchema-menu"

has no effect on the match of xsl:template. It is estimated that the match is not xpath but this attribute##. #It also doesn't work for select in for-each, which is strange. I guess I haven't understood how to use this attribute.

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