元素类型“xsd:sequence”必须由匹配的结束标签“”终止

Question

<?xml version="1.0" encoding="utf-8"  ?>
    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
        <xsd:element name="City">
            <xsd:complexType>
                <xsd:sequence>
                    <!--BUILDING ELEMENT //1 - Skyscraper-->
                    <xsd:element name="Skyscraper">
                        <!--A city can have a total of 50 skyscrapers-->
                        <xsd:complexType>
                            <xsd:sequence>
                                <xsd:element name="PrimaryMaterial"/>
                                    <xsd:simpleType>
                                        <xsd:restriction base="xsd:string">
                                            <xsd:enumeration value="concrete"/>
                                            <xsd:enumeration value="steel"/>
                                            <xsd:enumeration value="aluminium"/>
                                            <xsd:enumeration value="glass"/>
                                            <xsd:enumeration value="wood"/>
                                        </xsd:restriction>
                                    </xsd:simpleType>
                                </xsd:element>
                                <!--SKYSCRAPER ELEMENT //1 - Height-->
                                <xsd:element name="Height" type="xsd:integer"/>

                                <!--SKYSCRAPER ELEMENT //2 - ConstructionStarted-->
                                <xsd:element name="ConstructionStarted" type="xsd:integer"/>

                                <!--SKYSCRAPER ELEMENT //3 ConstructionStopped-->
                                <xsd:element name="ConstructionStopped" type="xsd:integer"/>
                            </xsd:sequence>
                        </xsd:complexType>
                    </xsd:element>
                </xsd:sequence>
            </xsd:complexType>
        </xsd:element>

    </xsd:schema>

Very confused - seems as though I did everything right?

ERROR:

The element type:

"xsd:sequence" must be terminated by the matching end-tag "".

Help would be much appreciated, it's quite hard to manage.

Answer 1

I get a different error

Failed to load schema.

Reason: The ' http://www.w3.org/2001/XMLSchema:simpleType ' element is not supported in this context.

The issue is this line, where you have trailing / which should not be there, as it is ended below your restriction etc. with the </xsd:element>

<xsd:element name="PrimaryMaterial"/>

This should be

<xsd:element name="PrimaryMaterial">