xml中schema的simpleType的用法

-----------------------------------------------xml中schema的simpleType的用法-------------------------------------------------

simpleType

作用：定义一个简单类型，它决定了元素和属性值的约束和相关信息

属性：name ：自定义属性的类型

内容：应用已经存在的简单类型，三种方式：

restrict→限定一个范围

list→从列表中选择

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">     <xs:element name="student">         <xs:complexType>              <xs:sequence>                  <xs:element name="name" type="xs:string">xs:element>                  <xs:element name="age" type="xs:int">xs:element>                  <xs:element name="gender" type="genderst">xs:element>                  <xs:element name="favor" type="favorst">xs:element>              xs:sequence>              <xs:attributeGroup ref="studattr">xs:attributeGroup>         xs:complexType>             xs:element>     <xs:attributeGroup name="studattr">              <xs:attribute name="studno" type="xs:int" use="required">xs:attribute>              <xs:attribute name="score" type="scorest" use="required">xs:attribute>     xs:attributeGroup>         <xs:simpleType name="scorest">         <xs:restriction base="xs:int">              <xs:minInclusive value="0">xs:minInclusive>              <xs:maxInclusive  value="100">xs:maxInclusive>         xs:restriction>     xs:simpleType>         <xs:simpleType name="genderst">         <xs:restriction base="xs:string">              <xs:enumeration value="男">xs:enumeration>              <xs:enumeration value="女">xs:enumeration>         xs:restriction>     xs:simpleType>         <xs:simpleType name="favorst">         <xs:list itemType="xs:string">xs:list>     xs:simpleType> xs:schema>

 

<student studentNo="1" score="100"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="demo5.xsd">     <name>张三name>     <age>20age>     <gender>男gender>     <favor>足球 男球favor> student>