Examples of XSD and XML Files with Errors

XSD Tutorials - Herong's Tutorial Examples

∟Xerces2 Java Parser - Java API of XML Parsers

∟Examples of XSD and XML Files with Errors

This section provides an example XML file associated with an example XML Schema file (XSD). The XML file contains some errors intentionally for see how XML validation tools report them.

In order to demonstrate how different XML validation programs report different types of validation errors, I wrote a more complex example XSD file, dictionary.xsd:

<?xml version="1.0"?>
<!-- dictionary.xsd
 - Copyright (c) 2002-2013 HerongYang.com. All Rights Reserved.
-->
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 <xsd:element name="dictionary" type="dictionaryType"/>
 <xsd:complexType name="dictionaryType">
  <xsd:sequence>
   <xsd:element name="word" type="wordType" maxOccurs="unbounded"/>
  </xsd:sequence>
 </xsd:complexType>
 <xsd:complexType name="wordType">
  <xsd:sequence>
   <xsd:element name="name" type="xsd:string"/>
   <xsd:element name="definition" type="definitionType"
    maxOccurs="unbounded"/>
   <xsd:element name="update" type="updateType" minOccurs="0"/>
  </xsd:sequence>
  <xsd:attribute name="acronym" type="xsd:boolean" use="optional"/>
  <xsd:attribute name="symbol" type="xsd:boolean" use="optional"/>
 </xsd:complexType>
 <xsd:complexType name="definitionType" mixed="true">
  <xsd:attribute name="reference" type="xsd:string"/>
 </xsd:complexType>
 <xsd:complexType name="updateType">
  <xsd:attribute name="date">
   <xsd:simpleType>
    <xsd:restriction base="xsd:string">
     <xsd:pattern value="\p{Nd}{4}-\p{Nd}{2}-\p{Nd}{2}"/>
    </xsd:restriction>
   </xsd:simpleType>
  </xsd:attribute>
 </xsd:complexType>
</xsd:schema>

Based on this XSD file, I wrote this invalid example XML file, dictionary_invalid_xsd.xml, with the XSD file associated through the "xsi" attribute:

<?xml version="1.0"?>
<!-- dictionary_invalid_xsd.xml
 - Copyright (c) 2002-2013 HerongYang.com. All Rights Reserved.
-->
<dictionary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:noNamespaceSchemaLocation="dictionary.xsd">
 <word acronym="yes">
  <name>XML</name>
  <definition reference="Herong's Notes">eXtensible Markup
Language.</definition>
  <update date="23-Dec-2003"/>
 </word>
 <word symbol="true">
  <name><</name>
  <definition>Mathematical symbol representing the "less than"
logical operation, like: 1<2.</definition>
  <definition>Reserved symbol in XML representing the beginning of
tags, like: <![CDATA[<p>Hello world!</p>]]>
  </definition>
  <update editor="Herong Yang"/>
 </word>
 <word symbol="no" acronym="false">
  <name>extensible</name>
  <definition>Capable of being extended.</definition>
 </word>
</dictionary>

dictionary_invalid_xsd.xml does have several places that do not match rules defined in dictionary.xsd. We will see how different validation tools detect and report those errors.