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我有一个xml文件。我无法更改 xml 结构,因此我必须更改 xsd 文件。问题是关于命名空间

<po:purchaseOrder orderDate="2001-01-01" xmlns:po="http://objectshop.com/ns/po" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://objectshop.com/ns/po po.xsd ">
<shipTo country="USA">
    <name>Alice Smith</name>
    <street>123 Maple Street</street>
    <city>Cambridge</city>
    <state>MA</state>
    <postalcode>12345</postalcode>
</shipTo>
</po:purchaseOrder>

所以通常我应该把 ns 放在每个元素中。如果我这样做,那很好。我如何设计xsd文件的问题。特别是如何在 xsd 中本地分配命名空间?

<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://objectshop.com/ns/po"
elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:po="http://objectshop.com/ns/po">

<complexType name="PurchaseOrderType">
    <sequence>
        <element name="shipTo" type="po:Address" maxOccurs="unbounded" minOccurs="0" ></element>
        <element name="billTo" type="po:Address" maxOccurs="unbounded" minOccurs="0"></element>
        <element name="items" type="po:Items" maxOccurs="unbounded" minOccurs="0"></element>
    </sequence>

    <attribute name="orderDate" type="date"></attribute>
</complexType>
</schema>
4

1 回答 1

1

您发布的 XSD 不完整,因此很难说您的设置是什么。因此,我将根据 XML 解释两个不同的选项。一个应该说明你的具体情况。

如果我从 XML 开始并从中生成 XSD,这就是您通常会得到的:

XSD1:

<?xml version="1.0" encoding="utf-8"?>
<!--XML Schema generated by QTAssistant/XML Schema Refactoring (XSR) Module (http://www.paschidev.com)-->
<xsd:schema xmlns:po="http://objectshop.com/ns/po" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://objectshop.com/ns/po" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="XSD2.xsd" />
  <xsd:element name="purchaseOrder">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element ref="shipTo" />
      </xsd:sequence>
      <xsd:attribute name="orderDate" type="xsd:date" use="required" />
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

XSD2:

<?xml version="1.0" encoding="utf-8"?>
<!--XML Schema generated by QTAssistant/XML Schema Refactoring (XSR) Module (http://www.paschidev.com)-->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:element name="shipTo">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="name" type="xsd:string" />
        <xsd:element name="street" type="xsd:string" />
        <xsd:element name="city" type="xsd:string" />
        <xsd:element name="state" type="xsd:string" />
        <xsd:element name="postalcode" type="xsd:unsignedShort" />
      </xsd:sequence>
      <xsd:attribute name="country" type="xsd:string" use="required" />
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

这两个 XSD 验证您发布的 XML。他们展示的是您将如何引用不在命名空间中的内容——我认为这就是您的问题所在。

但是,也可以用一个 XSD 文件描述这样的 XML。“tell-tale”是只有文档元素是合格的(在你的情况下purchaseOrder),而其他一切都是“不合格的”。要默认实现这一点,需要使用elementFormDefault="unqualified".

<?xml version="1.0" encoding="utf-8"?>
<!--XML Schema generated by QTAssistant/XML Schema Refactoring (XSR) Module (http://www.paschidev.com)-->
<xsd:schema xmlns:po="http://objectshop.com/ns/po" attributeFormDefault="unqualified" elementFormDefault="unqualified" targetNamespace="http://objectshop.com/ns/po" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <xsd:element name="purchaseOrder" type="po:PurchaseOrderType"/>
    <xsd:complexType name="PurchaseOrderType">
        <xsd:sequence>
            <xsd:element name="shipTo" type="po:Address" minOccurs="0" maxOccurs="unbounded"/>
        </xsd:sequence>
        <xsd:attribute name="orderDate" type="xsd:date" use="required"/>
    </xsd:complexType>
    <xsd:complexType name="Address">
        <xsd:sequence>
            <xsd:element name="name" type="xsd:string"/>
            <xsd:element name="street" type="xsd:string"/>
            <xsd:element name="city" type="xsd:string"/>
            <xsd:element name="state" type="xsd:string"/>
            <xsd:element name="postalcode" type="xsd:unsignedShort"/>
        </xsd:sequence>
        <xsd:attribute name="country" type="xsd:string" use="required"/>
    </xsd:complexType>
</xsd:schema>

或者,对于每个元素/属性,您可以通过设置表单属性来覆盖架构级别的默认设置。下面是一个示例(仅用于说明,不与您的 XML 匹配)。

<xsd:element name="name" type="xsd:string" form="qualified"/>
<xsd:attribute name="country" type="xsd:string" use="required" form="qualified"/>

在这种情况下,XML 应该是:

<po:purchaseOrder orderDate="2001-01-01" xmlns:po="http://objectshop.com/ns/po" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://objectshop.com/ns/po po.xsd ">
    <shipTo po:country="USA">
        <po:name>Alice Smith</po:name>
        <street>123 Maple Street</street>
        <city>Cambridge</city>
        <state>MA</state>
        <postalcode>12345</postalcode>
    </shipTo>
</po:purchaseOrder> 
于 2013-04-17T23:47:54.413 回答