xml 强制使用 xsd 元素
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Make an xsd element mandatory
提问by Chandru Nagrani
I have an xml file that I am trying to validate against an xsd file. Works fine. I want to modify the xsd to make an element value mandatory. How do I do this so when I validate the xml file I want it to fail if the element FirstNameis blank (<FirstName></FirstName>)
我有一个 xml 文件,我正在尝试针对 xsd 文件进行验证。工作正常。我想修改 xsd 以强制使用元素值。我该怎么做,以便在验证 xml 文件时我希望它在元素FirstName为空时失败( <FirstName></FirstName>)
xml File
xml文件
<?xml version="1.0" encoding="utf-8" ?>
<Patient>
<FirstName>Patient First</FirstName>
<LastName>Patient Last</LastName>
</Patient>
xsd File
.xsd 文件
<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Patient">
<xs:complexType>
<xs:sequence>
<xs:element name="FirstName" type="xs:string" />
<xs:element name="LastName" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
回答by Xstian
Mandatory
强制的
Attribute minOccursOptional. Specifies the minimum number of times the any element can occur in the parent element. The value can be any number >= 0. Default value is 1. (By default is mandatory)
属性minOccurs可选。指定 any 元素可以在父元素中出现的最小次数。该值可以是任何 >= 0 的数字。默认值为 1。 (默认情况下是强制性的)
<!-- mandatory true-->
<xs:element name="lastName" type="xs:string" />
<!-- mandatory false-->
<xs:element name="lastName" type="xs:string" minOccurs="0" />
Not Empty
不是空的
<xs:element name="lastName" type="xs:string" >
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:minLength value="1"/>
</xs:restriction>
</xs:simpleType>
</xs:element>

