如何实现XSD内部引用simpleType？
我正面临着你在下图中看到的错误。
XSD
<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:tns="http://example.com/ct-required"
xmlns:xmime="http://www.w3.org/2005/05/xmlmime"
targetNamespace="http://example.com/know-type">
<xs:import namespace="http://www.w3.org/2005/05/xmlmime"
schemaLocation="http://www.w3.org/2005/05/xmlmime"/>
<xs:simpleType name="JPEGPictureType"
xmime:expectedContentTypes="image/jpeg">
<xs:restriction base="xs:base64Binary"/>
</xs:simpleType>
<xs:simpleType name="PNGPictureType"
xmime:expectedContentTypes="image/png">
<xs:restriction base="xs:base64Binary"/>
</xs:simpleType>
<xs:simpleType name="Money">
<xs:restriction base="xs:decimal">
<xs:totalDigits value="13" />
<xs:fractionDigits value="2" />
<xs:minInclusive value="0.00" />
<xs:maxInclusive value="99999999999.99" />
</xs:restriction>
</xs:simpleType>
<xs:element name="Envelope">
<xs:complexType>
<xs:sequence>
<xs:element name="Deposit" minOccurs="1" maxOccurs="1">
<xs:complexType>
<xs:sequence>
<xs:element name="ClientId" type="xs:unsignedLong" />
<xs:element name="Account" type="xs:unsignedShort" />
<xs:element name="Currency" type="xs:string" />
<xs:element name="TotalSum" type="xs:Money" />
<xs:element name="SignedDate" type="xs:date" />
<xs:element name="Cheques">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" name="Cheque">
<xs:complexType>
<xs:sequence>
<xs:element name="Images">
<xs:complexType>
<xs:sequence>
<xs:element name="Front" type="PNGPictureType" />
<xs:element name="Back" type="PNGPictureType" />
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="MicrCodeCmc" type="xs:integer" />
<xs:element name="Amount" type="xs:unsignedLong" />
<xs:element name="PaymentDate" type="xs:date" />
<xs:element name="EmissionDate" type="xs:date" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
XML
<?xml version="1.0" encoding="utf-8"?>
<Envelope>
<Deposit>
<ClientId>1234567890123</ClientId>
<Account>0045678</Account>
<Currency>USD</Currency>
<TotalSum>500000</TotalSum>
<SignedDate>2016-02-15</SignedDate>
<Cheques>
<Cheque>
<Images>
<Front>
SUkqAAgAAAAPAP4ABAABAAAAAAAAAAABBAABAAAAfQUAAAEBBAABAAAAWgIAAAIBAwABAAAAAQAA
AAMBAwABAAAABAAAAAYBAwABAAAAAAAAAA4BAgAhAAAA0AAAABEBBAABAAAAAAIAABIBAwABAAAA
AQAAABUBAwABAAAAAQAAABYBBAABAAAAWgIAABcBBAABAAAAvi8AABoBBQABAAAAAAEAABsBBQAB
EdF0fRG0R0YRdH2R2XzaI6OxRQAQAQA=
</Front>
<Back>
SUkqAAgAAAAOAP4ABAABAAAAAAAAAAABBAABAAAAgQUAAAEBBAABAAAAVAIAAAIBAwABAAAAAQAA
AAMBAwABAAAABAAAAAYBAwABAAAAAAAAABEBBAABAAAAAAEAABIBAwABAAAAAQAAABUBAwABAAAA
AQAAABYBBAABAAAAVAIAABcBBAABAAAAcggAABoBBQABAAAAwAAAABsBBQABAAAA0AAAACgBAwAB
AAAAAgAAAAAAAAAAAAAAAAAAAAAAyAAAAAEAAAAAAAAAAAAAAMgAAAABAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//LZCdO1f7iRrKXTqt//pePx///9lNoL487Ajh
jFyzUrtwg+6gg9VmvCIWA42XMwziSUEEw7GoIcSUWZ3Y0oKmGR3LToGVC2LhkK6H4sorQNRUMLjH
LTGzlpv3RFCcH4NLB9hvLTmD8tMgOsG+WVaR5AweTcEWMMfaDQxDIx5NwVQx8OMPeGFHLSUlLcSS
1JtNV/9/rrffuO+h9bx////kfvABABAA
</Back>
</Images>
<MicrCodeCmc>123456789012345678901234567890</MicrCodeCmc>
<Amount>99999999999</Amount>
<PaymentDate>2016-02-15</PaymentDate>
<EmissionDate>2016-02-15</EmissionDate>
</Cheque>
<Cheque>
<Images>
<Front>
SUkqAAgAAAAPAP4ABAABAAAAAAAAAAABBAABAAAAfQUAAAEBBAABAAAAWgIAAAIBAwABAAAAAQAA
AAMBAwABAAAABAAAAAYBAwABAAAAAAAAAA4BAgAhAAAA0AAAABEBBAABAAAAAAIAABIBAwABAAAA
AQAAABUBAwABAAAAAQAAABYBBAABAAAAWgIAABcBBAABAAAAvi8AABoBBQABAAAAAAEAABsBBQAB
EdF0fRG0R0YRdH2R2XzaI6OxRQAQAQA=
</Front>
<Back>
SUkqAAgAAAAOAP4ABAABAAAAAAAAAAABBAABAAAAgQUAAAEBBAABAAAAVAIAAAIBAwABAAAAAQAA
AAMBAwABAAAABAAAAAYBAwABAAAAAAAAABEBBAABAAAAAAEAABIBAwABAAAAAQAAABUBAwABAAAA
AQAAABYBBAABAAAAVAIAABcBBAABAAAAcggAABoBBQABAAAAwAAAABsBBQABAAAA0AAAACgBAwAB
AAAAAgAAAAAAAAAAAAAAAAAAAAAAyAAAAAEAAAAAAAAAAAAAAMgAAAABAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//LZCdO1f7iRrKXTqt//pePx///9lNoL487Ajh
jFyzUrtwg+6gg9VmvCIWA42XMwziSUEEw7GoIcSUWZ3Y0oKmGR3LToGVC2LhkK6H4sorQNRUMLjH
LTGzlpv3RFCcH4NLB9hvLTmD8tMgOsG+WVaR5AweTcEWMMfaDQxDIx5NwVQx8OMPeGFHLSUlLcSS
1JtNV/9/rrffuO+h9bx////kfvABABAA
</Back>
</Images>
<MicrCodeCmc>123456789012345678901234567890</MicrCodeCmc>
<Amount>99999999999</Amount>
<PaymentDate>2016-02-15</PaymentDate>
<EmissionDate>2016-02-15</EmissionDate>
</Cheque>
</Cheques>
</Deposit>
</Envelope>
[这一半的答案解决了最初的问题。]
首先在xs： schema上为@target etNamespace指定的命名空间定义一个命名空间前缀：
<xs:schema targetNamespace="http://example.com/know-type"
xmlns:kt="http://example.com/know-type"
...
/>
然后在引用此命名空间中的全局类型时使用它。
使用它来引用Money，这会导致您立即出错：
<xs:element name="TotalSum" type="kt:Money" />
在引用PNGPicture Type的地方也使用它：
<xs:element name="Front" type="kt:PNGPictureType" />
<xs:element name="Back" type="kt:PNGPictureType" />
进行这些更改后，您的XSD将没有错误。
要引用Money，请将type="xs： Money"替换为type="Money"，并确保引用的目标是全局定义的，而不是本地定义的（你的是）：
<xs:element name="TotalSum" type="Money" />
在这种情况下，对PNGPicture Type的引用不需要更改，因为它已经正确地解决了无命名空间全局类型，而无需使用不正确的命名空间前缀。
