XML模式complexType

Question

我写XSD以下XML：

<?xml version="1.0" encoding="UTF-8"?> 
<?xml-stylesheet type="text/xsl" href="WS.xslt" ?> 
<interface name="WS"> 
    <package>com.example</package> 
    <import>java.rmi.RemoteException</import> 
    <import>java.io.*</import> 
     <abstract_method name="login"> 
      <modifier>public</modifier> 
      <arguments> 
       <parameter type="int">id</parameter> 
       <parameter type="String">pass</parameter> 
      </arguments> 
      <return>boolean</return> 
     </abstract_method> 
     <abstract_method name="send"> 
      <modifier>private</modifier> 
      <arguments> 
       <parameter type="String">subject</parameter> 
       <parameter type="String">message</parameter> 
      </arguments> 
      <exceptions> 
       <exception>IOException</exception> 
       <exception>RemoteException</exception> 
      </exceptions> 
      <return>void</return> 
     </abstract_method> 
</interface>   

我现在的XSD：

<?xml version="1.0"?> 
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <xsd:complexType name ="WebServiceInterface"> 
    <xsd:sequence> 
    <xsd:element name ="package" type="xsd:string"/> 
    <xsd:element name ="import" minOccurs="0" maxOccurs="unbounded"/> 
    <xsd:complexType name ="abstract_method" minOccurs="0" maxOccurs= "unbounded"> 
     <xsd:element name ="modifier" type="xsd:string"/> 
     <xsd:complexType name="arguments"> 
      <xsd:element name ="parameters" minOccurs="0" maxOccurs= "unbounded"/> 
     </xsd:complexType> 
     <xsd:complexType name ="exceptions"> 
      <xsd:element name ="exception" minOccurs="0" maxOccurs="unbounded"/> 
     </xsd:complexType> 
     <xsd:element name = "return"/> 
    </xsd:complexType> 
    </xsd:sequence> 
    </xsd:complexType> 
</xsd:schema> 

错误消息：

“S4S-elt-必须匹配1：'序列'的内容必须为 匹配（注释？，（元素|组|选择|序列|任何）*）。A 问题是发现始于：ComplexType“。

如何在没有此错误的情况下包含界面？

Answer 1

必须要么（溶液1）包裹<xsd:complexType>在<xsd:element>或（溶液2）定义<xsd:complexType name="...">别处，并且是指其与<xsd:element type="...">。 complexType旨在为要创建（和类型）的任何元素定义内容模型。解决方案2有时更受欢迎，因为它允许您重用（原样或扩展或限制）您定义的内容模型。

实例：

对于溶液1：

<xsd:element name="interface"> 
    <xsd:complexType> 
     [... definition of the complexType ...] 

对于溶液2：

<xsd:complexType name="WebServiceInterface"> 
     [... definition of the complexType ...] 

最后：

因此，你可以纠正你的模式，它的方式：

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 

    <xsd:element name="interface" type="WebServiceInterface"/> 

    <xsd:complexType name="WebServiceInterface"> 
     <xsd:sequence> 
      <xsd:element name="package" type="xsd:string"/> 
      <xsd:element name="import" minOccurs="0" maxOccurs="unbounded"/> 
      <xsd:element name="abstract_method" minOccurs="0" maxOccurs="unbounded"> 
       <xsd:complexType> 
        <xsd:sequence> 
         <xsd:element name="modifier" type="xsd:string"/> 
         <xsd:element name="arguments"> 
          <xsd:complexType> 
           <xsd:sequence> 
            <xsd:element name="parameter" minOccurs="0" maxOccurs="unbounded"/> 
           </xsd:sequence> 
          </xsd:complexType> 
         </xsd:element> 
         <xsd:element name="exceptions"> 
          <xsd:complexType> 
           <xsd:sequence> 
            <xsd:element name="exception" minOccurs="0" maxOccurs="unbounded"/> 
           </xsd:sequence> 
          </xsd:complexType> 
         </xsd:element> 
         <xsd:element name="return"/> 
        </xsd:sequence> 
        <xsd:attribute name="name" type="xsd:string"/> 
       </xsd:complexType> 
      </xsd:element> 
     </xsd:sequence> 
     <xsd:attribute name="name" type="xsd:string"/> 
    </xsd:complexType> 

</xsd:schema>