XML模式命名空间.验证根目录没有可用的匹配全局声明

问题

使用给定模式创建XML文档.

错误

.xml:9.20: Element '{http://example/buildings/1.0}old_buildings': No matching global declaration available for the validation root.
    oldbuildings.xml - invalid
    Problem

XML文档

<?xml version="1.0" encoding="UTF-8"?>

<buildings:old_buildings xmlns:buildings="http://example/buildings/1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://example/buildings/1.0 oldbuildings_schema.xsd">
    <building>
        <name>Name</name>
        <year_built era="BC">2000</year_built>
        <story>...<story>
    </building>
</buildings:old_buildings>

XSD文件


    <?xml version="1.0" encoding="UTF-8"?>

    <xs:schema targetNamespace="http://example/buildings/1.0/" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
xmlns="http://example/buildings/1.0/">
        <xs:element name="old_buildings">
            <xs:complexType>
                <xs:sequence>
                    <xs:element ref="building"/>
                </xs:sequence>
            </xs:complexType>
        </xs:element>

        <xs:element name="building" type="buildingType"></xs:element>


        <xs:complexType name="buildingType">
            <xs:sequence>
                <xs:element name="name" type="xs:string"/>
                <xs:element name="year_built" type="yearType"/>
                <xs:element name="story" type="xs:string"/>
            </xs:sequence>
        </xs:complexType>
        <xs:complexType name="yearType">
            <xs:simpleContent>
                <xs:extension base="xs:positiveInteger">
                    <xs:attribute name="era" type="xs:string"/>
                </xs:extension>
            </xs:simpleContent>
        </xs:complexType>
    </xs:schema>

<?xml version="1.0" encoding="UTF-8"?>

<buildings:old_buildings xmlns:buildings="http://example/buildings/1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://example/buildings/1.0 oldbuildings_schema.xsd">
    <building>
        <name>Name</name>
        <year_built era="BC">2000</year_built>
        <story>...<story>
    </building>
</buildings:old_buildings>

xmlns:buildings="http://example/buildings/1.0/"

使用/ final,如在xsd声明中：xs：schema targetNamespace =“http：//example/buildings/1.0/”