xml - xsd :any and xsd:anyType 之间的差异/相似之处

Question

我正在阅读有关 XML、XML-Schema、DTD 的资料，但我并不真正理解 xsd:any 和 xsd:anyType 之间的区别。

有人可以向我解释一下或指出一些好的文章吗？ (请不要链接到 XML-Schema 规范——我读了它，但我更困惑了)

TIA

Answer 1

This post很好地解释了它。我引用:

xsd:anyType is a type, like xsd:integer (though xsd:anyType is special in that it can act as a simple or complex type, and it places essentially no restrictions on the tree that it validates -- think of it loosely as the Schema language's analog of java.lang.Object).

A sample use would be:

<xsd:element name="e" type="xsd:anyType"/>

This would mean that elements named <e> can have any content, any attributes, etc.

xs:any is a wildcard, usable as a term in a content model. For example:

<xsd:complexType name="T">
  <xsd:sequence>
    <xsd:element ref="A"/>
    <xsd:any />
    <xsd:element ref="C"/>
  </xsd:sequence>
</xsd:complexType>

Elements of type T must have content <A/><???/><C/>, where <???> can be any named element. Now, if you look really closely there is an approximation to the definition of xsd:anyType given for reference in the Recommendation, and it uses an xsd:any wildcard as the means of saying that it allows any elements.

另请查看 XML Schema .