带有命名空间的XML属性的XSD语法

问题描述

我有一个xml片段我需要写XSD

I have an xml fragment for which I need to write XSD

<root xmlns="http://xmlns.oracle.com/sca/1.0" xmlns:id="http://xmlns.oracle.com/id/1.0">
  <service name="Book" id:number="465"/>
</root>

以下XSD在生成JAXB类时出错。

The following XSD gives error while JAXB class generation.

<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://xmlns.oracle.com/sca/1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="root">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="service">
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute type="xs:string" name="name"/>
                <xs:attribute ref="ns:number" xmlns:ns="http://xmlns.oracle.com/id/1.0"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  </xs:schema>

错误是

C：\ Program Files\Java\jdk1.7.0_06\bin> xjc -p test C：\ book.xsd
解析模式...
[错误] src-resolve.4.2：错误解析组件'ns：number'。检测到
'ns：number'在命名空间'http://xmlns.oracle.com/id/1.0'中，但来自此命名空间的组件
s不能从架构文档'文件中引用： / C：/书。
xsd'。如果这是不正确的命名空间，那么'ns：number'的前缀可能需要更改
s。如果这是正确的命名空间，则应将相应的'import'
标记添加到'file：/ C：/book.xsd'。
第10行文件：/ C：/book.xsd

C:\Program Files\Java\jdk1.7.0_06\bin>xjc -p test C:\book.xsdparsing a schema...[ERROR] src-resolve.4.2: Error resolving component 'ns:number'. It was detectedthat 'ns:number' is in namespace 'http://xmlns.oracle.com/id/1.0', but components from this namespace are not referenceable from schema document 'file:/C:/book.xsd'. If this is the incorrect namespace, perhaps the prefix of 'ns:number' needs to be changed. If this is the correct namespace, then an appropriate 'import'tag should be added to 'file:/C:/book.xsd'. line 10 of file:/C:/book.xsd

推荐答案

您实际上至少需要尽可能多的XSD文件作为名称空间，因为一个XSD文件只能定位一个名称空间，或者没有名称空间。

You actually need at least as many XSD files as namespaces since one XSD file can target only one namespace, or none.

由于你的根元素在一个名称空间中，而另一个属性在另一个名称空间中，你需要两个文件至少。您可以通过 xsd：import 链接它们。

Since your root element is in one namespace, and the attribute in another, you need then two files at least. You "link" them through an xsd:import.

热门XSD：

<?xml version="1.0" encoding="utf-8"?>
<!--XML Schema generated by QTAssistant/XML Schema Refactoring (XSR) Module (http://www.paschidev.com)-->
<xsd:schema xmlns="http://xmlns.oracle.com/sca/1.0" xmlns:id="http://xmlns.oracle.com/id/1.0" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://xmlns.oracle.com/sca/1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="xsd-syntax-for-xml-attributes-with-namespace1.xsd" namespace="http://xmlns.oracle.com/id/1.0" />
  <xsd:element name="root">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="service">
          <xsd:complexType>
            <xsd:attribute name="name" type="xsd:string" use="required" />
            <xsd:attribute ref="id:number" use="required" />
          </xsd:complexType>
        </xsd:element>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

xsd-syntax-for-xml-attributes-with-namespace1.xsd

<?xml version="1.0" encoding="utf-8"?>
<!--XML Schema generated by QTAssistant/XML Schema Refactoring (XSR) Module (http://www.paschidev.com)-->
<xsd:schema xmlns="http://xmlns.oracle.com/id/1.0" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://xmlns.oracle.com/id/1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:attribute name="number" type="xsd:unsignedShort" />
</xsd:schema>

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