这个是XML
<?xml version="1.0" encoding="UTF-8"?>
<?xml:stylesheet type="text/xsd" href="XML.xsd"/>
<PRODUCTDATA>
     <PRODUCT PRODID="P001">
         <PRODUCTNAME>Barbie Doll</PRODUCTNAME>
         <DESCRIPTION>This is a toy</DESCRIPTION>
         <PRICE>$20.0</PRICE>
         <QUANTITY>12</QUANTITY>
     </PRODUCT>
</PRODUCTDATA>
这个是XSD
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
     <xsd:element name="PRODUCTDATA" type="prdata"/>
     <xsd:complexType name="prdata">
         <xsd:sequence>
             <xsd:element name="PRODUCT" type="prdt"/>
         </xsd:sequence>    
       </xsd:complexType>
     <xsd:complexType name="prdt">        
         <xsd:sequence>
             <xsd:element name="PRODUCTNAME" type="xsd:string"/>
             <xsd:element name="DESCRIPTION" type="xsd:string"/>
             <xsd:element name="PRICE" type="xsd:positiveInteger"/>
             <xsd:element name="QUANTITY" type="xsd:integer"/>
         </xsd:sequence>
         <xsd:attribute name="PRODID" type="xsd:string "/>
     </xsd:complexType>
</xsd:schema >
为什么用浏览器打开，一片空白呢？
纠结中