XSD :
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sch="http://www.ascc.net/xml/schematron" elementFormDefault="qualified">
<xsd:simpleType name="employee">
<xsd:restriction base="xsd:string">
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="member">
<xsd:restriction base="xsd:string">
</xsd:restriction>
</xsd:simpleType>
<xsd:element name="person">
<xsd:complexType>
<xsd:choice minOccurs="2" maxOccurs="2">
<xsd:element name="employee" type="employee"/>
<xsd:element name="member" type="member"/>
</xsd:choice>
</xsd:complexType>
</xsd:element>
</xsd:schema>
View Code
minOccurs="2" maxOccurs="2" 用于限定 choice里面元素在父元素中出现的次数。
Example:
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
<?xml version="1.0" ?>
<person>
<member></member>
<member></member>
</person>
验证通过。
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
<?xml version="1.0" ?>
<person>
<employee></employee>
<member></member>
</person>
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIml2ZuUWYxYmZhR2MiNjY3QGMjFGZlNTOzUWZjJGO2YzM1MWMfdWbp9CXt92Yu4GZjlGbh5SZslmZxl3Lc9CX6MHc0RHaiojIsJye.gif)
<?xml version="1.0" ?>
<person>
<employee></employee>
</person>
验证失败。
作者:
HarlanC博客地址:
http://www.cnblogs.com/harlanc/个人博客:
http://www.harlancn.me/本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出,
原文链接如果觉的博主写的可以,收到您的赞会是很大的动力,如果您觉的不好,您可以投反对票,但麻烦您留言写下问题在哪里,这样才能共同进步。谢谢!