ruby - 验证XML : No matching global declaration available for the validation root

我正在尝试使用Ruby针对XSD模式验证以下XML。
它根本行不通，并显示一条错误消息告诉我



也许是 namespace ？有任何想法吗？

XML格式

<?xml version="1.0" encoding="UTF-8"?>
<request type="test" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <channel name="channel">
    <username>user</username>
    <password>pass</password>
  </channel>

  <hotel id="1">
    <date from="2009-07-07" to="2009-07-17"/>
    <room id="1">
      <allocation>10</allocation>
    </room>
  </hotel>
</request>

XSD

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <!-- channel -->
  <xsd:element name="channel">
    <xsd:attribute name="name" use="required" type="xsd:string" />
    <xsd:sequence>
      <xsd:element username="name" use="required" type="xsd:string"/>
      <xsd:element password="country" use="required" type="xsd:string"/>
    </xsd:sequence>
  </xsd:element>

  <!-- hotel -->
  <xsd:element name="hotel">
    <xsd:attribute name="id" use="required" type="xsd:string" />
    <xsd:sequence>
      <xsd:element name="hotel">
        <xsd:attribute name="from" use="required" type="xsd:string" />
        <xsd:attribute name="to" use="required" type="xsd:string" />
      </xsd:element>
      <xsd:element ref="room" minOccurs="1"/>
    </xsd:sequence>
  </xsd:element>


  <!-- room -->
  <xsd:element name="room">
    <xsd:sequence>
      <xsd:element name="allocation" type="xsd:string"></xsd:element>
      <xsd:element ref="hotel" minOccurs="1"/>
    </xsd:sequence>
    <xsd:attribute name="id" use="required" type="xsd:string" />
  </xsd:element>

  <!-- building all together -->
  <xsd:element name="request">
    <xsd:attribute name="type" use="required" type="xsd:string" />
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element ref="channel" maxOccurs="1"/>
        <xsd:element ref="hotel" maxOccurs="1"/>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

Ruby代码

require "xml"

document = LibXML::XML::Document.file("/tmp/test.xml")
schema = LibXML::XML::Document.file("/tmp/request.xsd")

result = document.validate_schema(schema) do |message,flag|
  log.debug(message)
  puts message
end

最佳答案

这是一个神秘的错误，但这可能是因为您的XSD格式错误。例如， channel ，旅馆(内部和外部元素)，房间和请求xsd:element标签的内容都应包装在xsd:complexType标签中。另外，use仅对xsd:attribute有效，对xsd:element无效。对于元素，请使用minOccurs和maxOccurs(尽管两者均默认为1，因此在这种情况下实际上并不需要它们)。此外，您的外部hotel元素包含room元素，其中必须包含hotel元素，从而形成无限循环。此外，您没有正确命名用户名和密码元素。最后，内部酒店元素可能应该是日期。这是我认为您要寻找的:

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <!-- channel -->
  <xsd:element name="channel">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="username" type="xsd:string"/>
        <xsd:element name="password" type="xsd:string"/>
      </xsd:sequence>
      <xsd:attribute name="name" use="required" type="xsd:string" />
    </xsd:complexType>
  </xsd:element>

  <!-- hotel -->
  <xsd:element name="hotel">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="date">
          <xsd:complexType>
            <xsd:attribute name="from" use="required" type="xsd:string" />
            <xsd:attribute name="to" use="required" type="xsd:string" />
          </xsd:complexType>
        </xsd:element>
        <xsd:element ref="room" minOccurs="1"/>
      </xsd:sequence>
      <xsd:attribute name="id" use="required" type="xsd:string" />
    </xsd:complexType>
  </xsd:element>


  <!-- room -->
  <xsd:element name="room">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="allocation" type="xsd:string"></xsd:element>
      </xsd:sequence>
      <xsd:attribute name="id" use="required" type="xsd:string" />
    </xsd:complexType>
  </xsd:element>

  <!-- building all together -->
  <xsd:element name="request">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element ref="channel" maxOccurs="1"/>
        <xsd:element ref="hotel" maxOccurs="1"/>
      </xsd:sequence>
    <xsd:attribute name="type" use="required" type="xsd:string" />
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

关于ruby - 验证XML : No matching global declaration available for the validation root，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/1007454/