XML的XSD验证失败

Question

I have an XML file which has contents as below

<?xml version="1.0" encoding="UTF-8"?>
<SETTINGS Version="1">
<CLEANING amount="40"/>
<CLEANING name="abcd"/>
<CLEANING initials="ABCD"/>
<MAINTENANCE state="on"/>
<MAINTENANCE temperature="F"/>
</SETTINGS>

I created an XSD schema for this XML using some tool which generated the below XSD output.

<?xml version="1.0" encoding="utf-8" ?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:element name="SETTINGS">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="CLEANING" maxOccurs="unbounded">
                    <xs:complexType>
                        <xs:attribute name="amount" type="xs:unsignedByte" use="required" />
                        <xs:attribute name="name" type="xs:string" use="required" />
                        <xs:attribute name="initials" type="xs:string" use="required" />
                    </xs:complexType>
                </xs:element>
                <xs:element name="MAINTENANCE" maxOccurs="unbounded">
                    <xs:complexType>
                        <xs:attribute name="state" type="xs:string" use="required" />
                        <xs:attribute name="temperature" type="xs:string" use="required" />
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
            <xs:attribute name="Version" type="xs:unsignedByte" use="required" />
        </xs:complexType>
    </xs:element>
</xs:schema>

Now when i try to validate this XMl against the XSD schema generated, i get below errors in validation(validated using some online validator).

Not valid.
Error - Line 3, 24: org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 24; cvc-complex-type.4: Attribute 'name' must appear on element 'CLEANING'.
Error - Line 3, 24: org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 24; cvc-complex-type.4: Attribute 'initials' must appear on element 'CLEANING'.
Error - Line 4, 24: org.xml.sax.SAXParseException; lineNumber: 4; columnNumber: 24; cvc-complex-type.4: Attribute 'amount' must appear on element 'CLEANING'.
Error - Line 4, 24: org.xml.sax.SAXParseException; lineNumber: 4; columnNumber: 24; cvc-complex-type.4: Attribute 'initials' must appear on element 'CLEANING'.
Error - Line 5, 28: org.xml.sax.SAXParseException; lineNumber: 5; columnNumber: 28; cvc-complex-type.4: Attribute 'amount' must appear on element 'CLEANING'.
Error - Line 5, 28: org.xml.sax.SAXParseException; lineNumber: 5; columnNumber: 28; cvc-complex-type.4: Attribute 'name' must appear on element 'CLEANING'.
Error - Line 6, 26: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 26; cvc-complex-type.4: Attribute 'temperature' must appear on element 'MAINTENANCE'.
Error - Line 7, 31: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 31; cvc-complex-type.4: Attribute 'state' must appear on element 'MAINTENANCE'.

Both XML and XSD are valid formats as validated online. I am not able to understand the reason behind this error. I suspect it is because ofhaving multiple elements sharing same name for which I think there is some constraint in generating the XSD schema. Not sure exactly what's wrong.

What am I doing wrong here and what could be solution for this error?

Answer 1

<xs:complexType>
  <xs:attribute name="amount" type="xs:unsignedByte" use="required" />
  <xs:attribute name="name" type="xs:string" use="required" />
  <xs:attribute name="initials" type="xs:string" use="required" />
</xs:complexType>

the word require mean that the attribute is needed so the corect writting of your XML is :

<CLEANING amount="40" name="abcd" initials="ABCD"/>

if you want to have you writing you need to remove require of your XSD

this is the same for MAINTENANCE

your XSD verify this text :

<SETTINGS Version="1">
    <CLEANING amount="40" name="abcd" initials="ABCD"/>
    <MAINTENANCE state="on" temperature="F"/>
</SETTINGS>

But if you want to validate you XML with this look it is impossible to put use=require so you will have somethig like :

 ...
    <xs:complexType>
        <xs:attribute name="amount" type="xs:unsignedByte" />
        <xs:attribute name="name" type="xs:string" />
        <xs:attribute name="initials" type="xs:string" />
    </xs:complexType>
...

Moreover if you want to have your form (so <a att1 ="" /> <a att2="" /> )

you will need to change your atribute like that :

<SETTINGS Version="1">
    <A amount="40" />
    <B name="abcd" />
    <C initials="ABCD"/>
    <D state="on" />
    <E temperature="F"/>
</SETTINGS>

but I think that the last possiblility is maybe overkill to the first option