如何设计书籍的XML模式？

Question

我的xsd文档有问题，不确定我所缺少的内容，因为它没有通过验证。 尝试使书籍ID是书籍的属性，并且将作者的姓名缩写和姓氏封装在author元素中，以便可以使用多个作者书籍。

<ArrayOfBook>
   <Book id="cb001">
      <Author>
         <Initials>Charles</Initials>
         <Surname>Berlitz</Surname>
      </Author>
      <Title>The Bermuda Triangle</Title>
   </Book>
   <Book id="da001">
      <Author>
         <Initials>Douglas</Initials>
         <Surname>Adams</Surname>
      </Author>
      <Title>The Hitchhiker's Guide to the Galaxy</Title>
   </Book>
   <Book id="bor001">
      <Author>
         <Initials>Bill</Initials>
         <Surname>O'Reilly</Surname>
      </Author>
      <Author>
         <Initials>Dwight Jon</Initials>
         <Surname>Zimmerman</Surname>
      </Author>
      <Title>Lincoln's Last Days</Title>
   </Book>
</ArrayOfBook>

我下面的XSD中缺少什么？ 当我尝试验证“作者的内容必须匹配（注释？，（simpleType | ComplexType）？，（唯一| Key | Keyref）*））。给我一个错误。发现一个问题始于：Element。”

<?xml version = "1.0" ?> 
    <xs:schema id = "ArrayOfBook" xmlns:xs ="http://www.w3.org/2001/XMLSchema"> 

    <xs:simpleType name = "AuthorId"> 
      <xs:restriction base = "xs:string"> 
        <xs:pattern value ="[A-Za-z\s']+"/> 
      </xs:restriction>
    </xs:simpleType>

    <xs:element name = "ArrayOfBook">
      <xs:complexType> 
        <xs:sequence> 
          <xs:element name = "Book" minOccurs = "0" maxOccurs = "unbounded"> 
            <xs:complexType> 
              <xs:sequence>
                <xs:element name = "Author">
                  <xs:element name="AuthorInitials" type="AuthorId" minOccurs ="1" maxOccurs = "unbounded"/>
                  <xs:element name="AuthorSurname" type="AuthorId" minOccurs ="1" maxOccurs = "unbounded"/>
                  </xs:element>
                    <xs:attribute name="Id" type = "xs:string"/>
                    <xs:element name="Title" type="xs:string"/>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
         </xs:element>
        </xs:schema>

Answer 1

您必须使用以下XSD来验证XML。

<?xml version = "1.0" ?>
<xs:schema id="ArrayOfBook" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:simpleType name="AuthorId">
        <xs:restriction base="xs:string">
            <xs:pattern value="[A-Za-z\s']+"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:element name="ArrayOfBook">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="Book" minOccurs="0" maxOccurs="unbounded">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="Author" minOccurs="0" maxOccurs="unbounded">
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:element name="Initials" type="AuthorId" minOccurs="1"
                                            maxOccurs="unbounded"/>
                                        <xs:element name="Surname" type="AuthorId" minOccurs="1"
                                            maxOccurs="unbounded"/>
                                    </xs:sequence>
                                </xs:complexType>
                            </xs:element>
                            <xs:element name="Title" type="xs:string"/>
                        </xs:sequence>
                        <xs:attribute name="id" type="xs:string"/>
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>