我的 XSD 有问题。我的 XSD 包含一个 xs:choice
来实现选择其中一种类型的选项。不允许选择无类型(或 Null)!
<xs:complexType name="TypeAndValue">
<xs:choice minOccurs="1">
<xs:element minOccurs="1" name="SimpleType" nillable="false" type="SimpleDataTypeAndValue" />
<xs:element minOccurs="1" name="ArrayType" nillable="false" type="ArrayTypeAndValue" />
<xs:element minOccurs="1" name="ListType" nillable="false" type="ListTypeAndValue" />
<xs:element minOccurs="1" name="ClassType" nillable="false" type="IdentifierTypeAndValue" />
</xs:choice>
我已经通过 xsd.exe 从 xsd 创建了一个 .cs 文件。这工作正常,没有错误。但是如果我尝试这样的 XML 文件,XML 将被接受:
<?xml version="1.0"?>
<Block xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Class Identifier="Test">
<Declaration Identifier="List">
<TypeAndValue>
</TypeAndValue>
</Declaration>
</Class>
</Block>
我已经尝试选择 minOccurs="1"
和 nillable="false"
元素,但 Schema 接受空的 TypeAndValue
block 。
难道我需要修改cs文件?
编辑: 这是完整的 XSD:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Block" nillable="true" type="Block" />
<xs:complexType name="Block">
<xs:sequence>
<xs:element minOccurs="0" maxOccurs="unbounded" name="Class" nillable="true" type="Class" />
</xs:sequence>
</xs:complexType>
<xs:complexType name="Class">
<xs:sequence>
<xs:element minOccurs="0" maxOccurs="unbounded" name="Declaration" nillable="true" type="Declaration" />
</xs:sequence>
<xs:attribute name="Accessmodifier" type="Accessmodifier" />
<xs:attribute name="Identifier" type="xs:string" use="required"/>
</xs:complexType>
<xs:complexType name="Declaration">
<xs:sequence>
<xs:element minOccurs="0" maxOccurs="unbounded" name="Modifier" nillable="true" type="Modifier" />
<xs:element minOccurs="1" maxOccurs="1" name="TypeAndValue" type="TypeAndValue" />
</xs:sequence>
<xs:attribute name="Accessmodifier" type="Accessmodifier" />
<xs:attribute name="Identifier" type="xs:string" use="required" />
</xs:complexType>
<xs:simpleType name="Modifier">
<xs:restriction base="xs:string">
<xs:enumeration value="Static"/>
<xs:enumeration value="Constant"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="Accessmodifier">
<xs:restriction base="xs:string">
<xs:enumeration value="Public"/>
<xs:enumeration value="Private"/>
<xs:enumeration value="Internal"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="SimpleDataTypeAndValue">
<xs:attribute name="Type" type="SimpleType" use="required"/>
<xs:attribute name="Value" type="xs:string" />
</xs:complexType>
<xs:complexType name="IdentifierTypeAndValue">
<xs:attribute name="Type" type="xs:string"/>
</xs:complexType>
<xs:complexType name="ArrayTypeAndValue">
<xs:choice>
<xs:element minOccurs="1" maxOccurs="1" name="Dimension" type="ArrayDimension" />
<xs:element minOccurs="1" maxOccurs="1" name="DataInitialization" type="ArrayDataInitialization" />
</xs:choice>
<xs:attribute name="Type" type="SimpleType" use="required"/>
</xs:complexType>
<xs:complexType name="ArrayDimension">
<xs:attribute name="Amount" type="xs:int" use="required"/>
</xs:complexType>
<xs:complexType name="ArrayDataInitialization">
<xs:sequence>
<xs:element minOccurs="0" maxOccurs="unbounded" name="Value" type="xs:string" />
</xs:sequence>
</xs:complexType>
<xs:complexType name="ListTypeAndValue">
<xs:sequence>
<xs:element minOccurs="0" maxOccurs="unbounded" name="Value" type="xs:string" />
</xs:sequence>
<xs:attribute name="Type" type="SimpleType" use="required" />
</xs:complexType>
<xs:complexType name="TypeAndValue">
<xs:choice minOccurs="1">
<xs:element minOccurs="1" name="SimpleType" nillable="false" type="SimpleDataTypeAndValue" />
<xs:element minOccurs="1" name="ArrayType" nillable="false" type="ArrayTypeAndValue" />
<xs:element minOccurs="1" name="ListType" nillable="false" type="ListTypeAndValue" />
<xs:element minOccurs="1" name="ClassType" nillable="false" type="IdentifierTypeAndValue" />
</xs:choice>
</xs:complexType>
<xs:simpleType name="SimpleType">
<xs:restriction base="xs:string">
<xs:enumeration value="Int"/>
<xs:enumeration value="Float"/>
<xs:enumeration value="Double"/>
<xs:enumeration value="Bool"/>
<xs:enumeration value="String"/>
<xs:enumeration value="Char"/>
<xs:enumeration value="Byte"/>
<xs:enumeration value="Short"/>
<xs:enumeration value="Long"/>
<xs:enumeration value="Date"/>
</xs:restriction>
</xs:simpleType>
<xs:element name="Class" nillable="true" type="Class" />
<xs:element name="Declaration" nillable="true" type="Declaration" />
</xs:schema>
最佳答案
您的 XML 实际上不对您的 XSD 有效:
[Error] try.xml:9:24: cvc-complex-type.2.4.b: The content of element 'TypeAndValue' is not complete. One of '{SimpleType, ArrayType, ListType, ClassType}' is expected.
由于这符合您的预期,您应该怀疑您验证 XML 所使用的方法。确保您使用的是验证解析器并且验证已打开。
关于java - XSD xs :choice shouldn't allow empty choice,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33650591/