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warner
Asked: 2020-02-05 08:30:44 +0800 CST 2020-02-05 08:30:44 +0800 CST

Validate an XML with an XSD

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I am trying to create an XSD to validate a series of documents generated in XML format .

I have tried the following: 

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="proceso_cajero">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" name="evento">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="ID_INSTANCIA" type="xs:string" />
              <xs:element name="ACTIVIDAD" type="xs:string" />          
            </xs:sequence>
              <xs:any minOccurs="1"/>

          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

What I need and am trying to do in that piece of code is to validate that the XML file has 2 elements inside the element "evento"in that order "ID_INSTANCIA"- "ACTIVIDAD"and then several elements but not required. If it is mandatory for at least one element to come after the sequence .

The target XML file can have this structure: 

<?xml version="1.0" encoding="UTF-8" ?>
<proceso_cajero>
  <evento>
    <ID_INSTANCIA>XXXXX</ID_INSTANCIA>
    <ACTIVIDAD>XXXXXXXXX</ACTIVIDAD>

    <MONEDA>XXX</MONEDA>
    <MONTO>XXX</MONTO>

  </evento>
</proceso_cajero>

When trying to perform the validation, it shows me an error on the line where I declare the element <xs:any>:

"Unable to parse schema file, the content is not valid expected is (annotation,simplecontent,complexcontent, ... )"

xml

1 Answers

  1. Best Answer

    The mandatory elements must have the attribute minOccurs="1"and after closing one xs:sequenceyou cannot put more elements, you must start another xs:sequenceor another structure.

    In your case, the element anyis part of the sequence as the last element and the scheme would look like this:

    <xs:complexType>
  <xs:sequence>
    <xs:element maxOccurs="unbounded" name="evento">
      <xs:complexType>
        <xs:sequence>
          <xs:element name="ID_INSTANCIA" type="xs:string" minOccurs="1" />
          <xs:element name="ACTIVIDAD" type="xs:string" minOccurs="1" />
          <xs:any minOccurs="1" maxOccurs="unbounded" processContents="skip"/>
        </xs:sequence>

      </xs:complexType>
    </xs:element>
  </xs:sequence>
</xs:complexType>

    • 3