如何在引用xml时删除xsd中的错误：找不到声明元素'CAST'

Question

我有一个与某些XSD相关联的XML。我在XSD中包含了XML中的所有元素，包括Root元素。在验证来自此XSD的XML时，它表示缺少CAS（这是根元素）。

有人知道如何解决这个问题吗？

XML：

<?xml version="1.0"?>
<CAS xmlns="http://www.w3schools.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   xsi:schemaLocation="CASNamespace ..\..\CAS_backup.xsd">
    <name>CAS SD</name>
    <casBaseURL>www.sws.bfh.ch/studium/vorlesungen/</casBaseURL>
    <course id="C-jav">
    <name>Java</name>
    <teacher ref="T-joh"/>
    <lessons>40</lessons>
    <language>de</language>
    <language>en</language>
    <url>sd-java.xhtml</url>
    <weight>1.8</weight>
    </course>

    <course id="C-xml">
    <name>XML Technologien</name>
    <teacher ref="T-exe"/>
    <lessons>24</lessons>
    <project>8</project>
    <language>de</language>
    <language>en</language>
    <url>sd-xml.xhtml</url>
    <weight>1.6</weight>
    </course>

    <course id="C-rdb">
    <name>Relationale Datenbanken</name>
    <teacher ref="T-bas"/>
    <lessons>24</lessons>
    <project>8</project>
    <language>de</language>
    <language>en</language>
    <language>fr</language>
    <url>sd-rdb.xhtml</url>
    <weight>1.6</weight>
    </course>

   <course id="C-da">
   <name>Datenstrukturen und Algorithmen</name>
   <teacher ref="T-rit"/>
   <lessons>48</lessons>
   <language>de</language>
   <language>en</language>
   <url>sd-algodata.xhtml</url>
   <weight>1.8</weight>
   </course>

   <course id="C-gui">
   <name>GUI/Ergonomie</name>
   <teacher ref="T-joh"/>
   <teacher ref="T-nom"/>
   <lessons>24</lessons>
   <project>16</project>
   <language>de</language>
   <language>en</language>
   <url>sd-gui.xhtml</url>
   <weight>1.6</weight>
   </course>

   <student id="P-001">
       <name>
           <firstName>Roberto</firstName>
           <lastName>Campione</lastName>
       </name>
       <dateOfBirth>1970-12-12</dateOfBirth>
       <address>
           <street>
               <name>Bahnhofstrasse</name>
               <number>12</number>
               <addition>a</addition>
           </street>
           <postalCode>4000</postalCode>
           <city>Basel</city>
           <country>Schweiz</country>
       </address>
       <ratings>
           <rating ref="C-xml"><grade>85</grade></rating>
           <rating ref="C-da"><grade>82</grade></rating>
       </ratings>
   </student>
   <student id="P-002">
       <name>
           <firstName>Willis</firstName>
           <middleName>R.</middleName>
           <lastName>Pattern</lastName>
       </name>
       <dateOfBirth>1975-10-12</dateOfBirth>
       <address>
           <street>
               <name>Hauptstrasse</name>
               <number>10</number>
           </street>
           <postalCode>6000</postalCode>
           <city>Luzern</city>
           <country>Schweiz</country>
       </address>
       <ratings>
           <rating ref="C-da"><grade>45</grade></rating>
           <rating ref="C-xml"><grade>75</grade></rating>
           <rating ref="C-jav"><grade>75</grade></rating>
       </ratings>
   </student>
   <student id="P-003">
       <name>
           <firstName>Anna</firstName>
           <middleName>Maria</middleName>
           <lastName>Muster</lastName>
       </name>
       <dateOfBirth>1978-10-29</dateOfBirth>
       <address>
           <street>
               <name>Langstrasse</name>
               <number>8</number>
           </street>
           <postalCode>3000</postalCode>
           <city>Bern</city>
           <country>Schweiz</country>
       </address>
       <ratings>
           <rating ref="C-da"><grade>75</grade></rating>
           <rating ref="C-rdb"><grade>96</grade></rating>
           <rating ref="C-jav"><grade>88</grade></rating>
           <rating ref="C-gui"><grade>78</grade></rating>
       </ratings>
   </student>
   <student id="P-004">
       <name>
           <firstName>Hans</firstName>
           <middleName>Jochen</middleName>
           <lastName>Musterhans</lastName>
       </name>
       <dateOfBirth>1980-08-12</dateOfBirth>
       <address>
           <street>
               <name>Langgasse</name>
               <number>4</number>
           </street>
           <postalCode>8000</postalCode>
           <city>Winterthur</city>
           <country>Schweiz</country>
       </address>
       <ratings>
           <rating ref="C-da"><grade>95</grade></rating>
           <rating ref="C-rdb"><grade>92</grade></rating>
           <rating ref="C-jav"><grade>78</grade></rating>
           <rating ref="C-xml"><grade>76</grade></rating>
           <rating ref="C-gui"><grade>88</grade></rating>
       </ratings>
  </student>
  <student id="P-005">
      <name>
          <firstName>Christina</firstName>
          <lastName>Muster</lastName>
      </name>
      <dateOfBirth>1968-04-22</dateOfBirth>
      <address>
</CAS>

XSD：

<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="NewDataSet"  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="CASNamespace" xmlns="CASNamespace" xmlns:msdata="urn:schemas-    microsoft-com:xml-msdata"> 
    <xs:element name="CAS" type="CASType"/>
        <xs:complexType name="CASType">
            <xs:sequence>
                <xs:element ref="name"/>
                <!--<xs:element ref="casBaseURL"/>-->
                <xs:element maxOccurs="unbounded" ref="course"/>
                <xs:element maxOccurs="unbounded" ref="student"/>
                <xs:element maxOccurs="unbounded" ref="teacher"/>
                <!--<xs:element ref="courseParticipants"/>-->
            </xs:sequence>
        </xs:complexType>  

   <xs:element name="course">
       <xs:complexType>
           <xs:sequence>
               <xs:element name="name" type="xs:string" minOccurs="0"/>
               <xs:element name="lessons" type="xs:string" minOccurs="1" maxOccurs="50" />
               <xs:element name="project" type="xs:string" minOccurs="0"/>
               <xs:element name="url" minOccurs="1" maxOccurs="1">
           <xs:simpleType>
                   <xs:restriction base="xs:string">
                   <xs:pattern value="[a-zA-Z].*.xhtml"/>
                   </xs:restriction>
           </xs:simpleType>
       </xs:element>
               <xs:element name="weight" minOccurs="1">
                   <xs:simpleType>
                       <xs:restriction base="xs:float">             
                           <xs:pattern value="[0-9]\.[0-9]"/>
                       </xs:restriction>
                   </xs:simpleType>
               </xs:element>
               <xs:element ref="teacher" minOccurs="0" maxOccurs="unbounded" />
               <xs:element name="language" nillable="false" minOccurs="1" maxOccurs="4">
                   <xs:complexType>       
                       <xs:simpleContent msdata:ColumnName="language_Text" msdata:Ordinal="0">
                           <xs:extension base="xs:string" />
                       </xs:simpleContent>          
                   </xs:complexType>
               </xs:element>
               <xs:element ref="student" minOccurs="1" maxOccurs="unbounded" />
           </xs:sequence>
           <xs:attribute name="id">
               <xs:simpleType>
                   <xs:restriction base="xs:string">                
                       <xs:pattern value="[C]-[a-z][A-Z].*"/>
                   </xs:restriction>
               </xs:simpleType>
           </xs:attribute>
           <xs:attribute name="ref" type="xs:string" />
       </xs:complexType>
   </xs:element>

   <xs:element name="teacher">
       <xs:complexType>
           <xs:sequence>
               <xs:element ref="name" minOccurs="1" maxOccurs="unbounded" />
           </xs:sequence>
           <xs:attribute name="ref" type="xs:string" />
           <xs:attribute name="id">
               <xs:simpleType>
                   <xs:restriction base="xs:string">                
                       <xs:pattern value="[T]-[a-z][A-Z].*"/>
                   </xs:restriction>
               </xs:simpleType>
           </xs:attribute>
       </xs:complexType>
   </xs:element>

   <xs:element name="student">
       <xs:complexType>
           <xs:sequence>        
               <xs:element name="dateOfBirth" minOccurs="1" maxOccurs="1">
                   <xs:complexType>
                       <xs:sequence>
                           <xs:element name="Year">
                               <xs:simpleType>
                                   <xs:restriction base="xs:integer">
                                       <xs:minInclusive value="1920"/>
                                       <xs:maxInclusive value="2000"/>
                                   </xs:restriction>        
                               </xs:simpleType>
                           </xs:element>
                           <xs:element name="Month">
                               <xs:simpleType>
                                   <xs:restriction base="xs:integer">
                                       <xs:minInclusive value="1"/>
                                       <xs:maxInclusive value="12"/>
                                   </xs:restriction>        
                               </xs:simpleType>
                           </xs:element>
                           <xs:element name="Day">
                               <xs:simpleType>
                                   <xs:restriction base="xs:integer">
                                       <xs:minInclusive value="1"/>
                                       <xs:maxInclusive value="31"/>
                                   </xs:restriction>        
                               </xs:simpleType>
                           </xs:element>
                       </xs:sequence>
                   </xs:complexType>
               </xs:element>                
               <xs:element ref="name" minOccurs="1" maxOccurs="unbounded" />
               <xs:element name="address" minOccurs="0" maxOccurs="unbounded">
                   <xs:complexType>
                       <xs:sequence>
                           <xs:element name="postalCode" minOccurs="4" maxOccurs="5">
                               <xs:simpleType>
                                   <xs:restriction base="xs:string">
                                       <xs:pattern value="[0-9].*"/>
                                   </xs:restriction>
                               </xs:simpleType>
                           </xs:element>
                           <xs:element name="city" type="xs:string" minOccurs="0" />
                           <xs:element name="country" type="xs:string" minOccurs="0" />
                           <xs:element name="street" minOccurs="0" maxOccurs="unbounded">
                               <xs:complexType>
                                   <xs:sequence>
                                       <xs:element name="name" minOccurs="0">
                                           <xs:simpleType>
                                               <xs:restriction base="xs:string">
                                                   <xs:pattern value="[a-zA-Z].*"/>
                                               </xs:restriction>
                                           </xs:simpleType>
                                       </xs:element>
                                       <xs:element name="number" minOccurs="1">
                                           <xs:simpleType>
                                               <xs:restriction base="xs:string">
                                                   <xs:pattern value="[0-9].*"/>
                                               </xs:restriction>
                                           </xs:simpleType>
                                       </xs:element>
                                       <xs:element name="addition" type="xs:string" minOccurs="0" />
                                   </xs:sequence>
                               </xs:complexType>
                           </xs:element>
                       </xs:sequence>
                   </xs:complexType>
               </xs:element>
               <xs:element name="ratings" minOccurs="0" maxOccurs="unbounded">
                   <xs:complexType>
                       <xs:sequence>
                           <xs:element name="rating" minOccurs="0" maxOccurs="unbounded">
                               <xs:complexType>
                                   <xs:sequence>
                                       <xs:element name="grade" minOccurs="1" maxOccurs="1">
                                           <xs:simpleType>
                                               <xs:restriction base="xs:integer">
                                                   <xs:minInclusive value="1"/>
                                                   <xs:maxInclusive value="100"/>
                                               </xs:restriction>
                                           </xs:simpleType>
                                       </xs:element>
                                   </xs:sequence>
                                   <xs:attribute name="ref" type="xs:string" />
                               </xs:complexType>
                           </xs:element>
                       </xs:sequence>
                   </xs:complexType>
               </xs:element>
           </xs:sequence>
           <xs:attribute name="id">
               <xs:simpleType>
                   <xs:restriction base="xs:string">                
                       <xs:pattern value="[P]-[a-z][A-Z].*"/>
                   </xs:restriction>
               </xs:simpleType>
           </xs:attribute>
           <xs:attribute name="ref" type="xs:string" />
       </xs:complexType>
   </xs:element>

   <xs:element name="name">
       <xs:complexType>
           <xs:sequence>
               <xs:element name="firstName" minOccurs="1">
                   <xs:simpleType>
                       <xs:restriction base="xs:string">
                           <xs:pattern value="[a-z].*"/>
                       </xs:restriction>
                   </xs:simpleType>
               </xs:element>
               <xs:element name="middleName" minOccurs="1">
                   <xs:simpleType>
                       <xs:restriction base="xs:string">
                           <xs:pattern value="[a-z].*"/>
                       </xs:restriction>
                   </xs:simpleType>
               </xs:element>
               <xs:element name="lastName" minOccurs="1">
                   <xs:simpleType>
                       <xs:restriction base="xs:string">
                           <xs:pattern value="[a-z].*"/>
                       </xs:restriction>
                   </xs:simpleType>
               </xs:element>
           </xs:sequence>
       </xs:complexType>
   </xs:element>  
</xs:schema>

此致

乌斯曼

Answer 1

此外，您的XML文档格式不正确。您可以使用W3C验证器http://validator.w3.org/查看“地址”（第157行）和“学生”（第151行）的结束标记丢失。

我不认为反斜杠在这里是个好主意xsi:schemaLocation="CASNamespace ..\..\CAS_backup.xsd" ...

Answer 2

您的Xml文档将xmlns="http://www.w3schools.com"指定为其默认命名空间，而您的架构将targetNamespace="CASNamespace" xmlns="CASNamespace"指定为目标命名空间。

将Xml文档中的xmlns="http://www.w3schools.com"更改为xmlns="CASNamespace"，您的文档仍然无法验证，因为它会抱怨它需要元素<course/>而不是<casBaseURL />。< / p>